You are about to make the largest financial decision of your life. Before you speak to a lender, before you make an offer, before you even narrow your search to a specific price range — you need real numbers. Not estimates from a friend. Not a rough figure from a broker on the phone. The actual monthly payment, the actual total interest, and the actual maximum you can comfortably borrow based on your income.

This mortgage calculator gives you all of that. Enter your home price, down payment, interest rate, and loan term. Get your monthly payment in seconds, see the full breakdown of what you will pay over the life of the loan, and use the results to make a decision grounded in maths rather than optimism.

Every number in this calculator is based on the same amortisation formula your lender uses. The results are as accurate as the inputs you provide.

How Does a Mortgage Calculator Work?

A mortgage calculator works by applying the standard loan amortisation formula to three core inputs — your loan amount, your annual interest rate, and your loan term in years — to produce your monthly principal and interest payment. It then uses that monthly figure to calculate your total repayment over the full term and the total interest paid, and generates a payment schedule showing how your balance falls month by month.

The formula behind every repayment mortgage calculation is:

M = P × [r(1 + r)ⁿ] ÷ [(1 + r)ⁿ − 1]

Where M is your monthly payment, P is the loan principal (the amount you borrow), r is the monthly interest rate expressed as a decimal (your annual rate divided by 12), and n is the total number of monthly payments (your loan term in years multiplied by 12).

This formula looks complex written out, but it produces a single number — your monthly payment — instantly. The calculator above runs it in milliseconds for any combination of inputs you enter.

Worked example — $350,000 home, 10% down, 6.75% rate, 30-year term:

Home price: $350,000. Down payment: $35,000 (10%). Loan amount (P): $315,000. Monthly rate (r): 6.75% ÷ 12 = 0.005625. Number of payments (n): 30 × 12 = 360.

Monthly payment: $315,000 × [0.005625 × (1.005625)³⁶⁰] ÷ [(1.005625)³⁶⁰ − 1] = $2,042.63

Total paid over 30 years: $735,347. Total interest: $420,347.

That $420,347 in interest — more than the original loan — is the number most first-time buyers do not see until they use a mortgage calculator for the first time. It is the single most important reason to compare rates, terms, and down payment sizes before committing to any loan.

Are Mortgage Calculators Accurate?

Mortgage calculators are accurate for what they calculate — which is the principal and interest portion of your monthly payment based on the inputs you provide. The closer your inputs are to your actual loan terms, the more accurate the result.

There are a few areas where a calculator's output may differ from your actual monthly payment:

Property taxes vary by county and are not included in the base calculation unless you enter them. In the US, property tax rates range from under 0.3% of home value annually (Hawaii, Alabama) to over 2.1% (New Jersey, Illinois). The calculator includes a field for property taxes so you can model your total monthly housing cost including escrow.

Homeowners insurance is required by virtually all lenders and is typically escrowed into your monthly payment. National average is roughly $1,500–$2,000 annually on a median-priced home, though it varies significantly by state, property age, and coverage level.

Private Mortgage Insurance (PMI) applies when your down payment is less than 20% on a conventional loan. PMI typically costs 0.5%–1.5% of the loan amount annually and is added to your monthly payment. It is not always included in basic calculator outputs — entering your full down payment and noting whether it is below 20% helps you account for this.

HOA fees are not part of the mortgage but are a real monthly housing cost for condominiums and many planned communities.

Closing costs are not reflected in monthly payments but represent a significant upfront cost — typically 2%–5% of the loan amount. They do not affect the monthly payment calculation but must be budgeted alongside the down payment.

For the principal and interest calculation itself — what you agreed to pay the bank each month — a mortgage calculator that uses the correct amortisation formula is not an estimate. It is the exact answer, to the penny, for the inputs entered. The reason actual mortgage statements sometimes differ slightly is rounding in daily interest calculations by specific lenders, not any flaw in the calculator formula.

How Are Mortgage Payments Calculated? — The Full Explanation

Understanding how mortgage payments are calculated gives you genuine power in the buying process. Here is the complete picture.

The Amortisation Mechanism

Each monthly payment covers two things: the interest accrued on the outstanding balance since the last payment, and a portion of the principal (the loan itself). In the early months of a mortgage, the vast majority of each payment is interest. Over time, as the balance falls, more of each payment goes to principal.

This is called front-loaded interest, and it is the defining mathematical feature of the standard amortising mortgage.

Month-by-month example — $315,000 at 6.75%, 30-year term:

Month 1: Opening balance $315,000. Interest = $315,000 × 0.005625 = $1,771.88. Principal = $2,042.63 − $1,771.88 = $270.75. Closing balance = $314,729.25.

Month 12: Opening balance $311,468. Interest = $1,750.76. Principal = $291.87. Closing balance = $311,176.

Month 60 (Year 5 end): Opening balance $300,431. Interest = $1,690.18. Principal = $352.45. Closing balance = $300,078.

Month 180 (Year 15 end): Opening balance $266,104. Interest = $1,496.84. Principal = $545.79. Closing balance = $265,558.

Month 360 (Year 30 — final payment): Opening balance $2,030. Interest = $11.42. Principal = $2,031.21. Balance = $0.

The critical insight: At month 60, after five full years of payments ($122,558 paid), the balance has fallen from $315,000 to $300,431 — a reduction of only $14,569. The other $108,000 in payments over five years went to interest. This is why the decision to overpay, refinance, or increase the down payment has such a large impact on total cost — every dollar that reduces the principal early eliminates compounding interest on that amount for all future months.

What Determines Monthly Mortgage Payment?

Four factors determine what your monthly payment will be, in order of impact:

Loan amount — the primary driver. Every $10,000 increase in loan amount adds approximately $65/month to a 30-year payment at 6.75%.

Interest rate — the most negotiable factor. The difference between 6.25% and 7.25% on a $300,000 30-year loan is $183/month and $65,880 over the full term.

Loan term — the leverage lever. A 15-year term versus 30-year term on $300,000 at comparable rates ($627/month higher payment) saves over $220,000 in total interest.

Down payment — reduces loan amount and can eliminate PMI. Going from 10% to 20% down on a $400,000 home cuts the loan by $40,000 and eliminates $150–$300/month in PMI.

How Much Mortgage Calculator — What Can I Afford?

This is the question that matters most before you start searching for a home, and the mortgage calculator answers it when you work backwards from your budget rather than forwards from a price.

The 28/36 Rule — The Standard Western Affordability Framework

Lenders across the US, UK, Canada, and Australia all use variants of the same underlying affordability logic. In the US, the conventional framework is the 28/36 rule:

Your total monthly housing payment — principal, interest, property taxes, and insurance, abbreviated as PITI — should not exceed 28% of your gross monthly income.

Your total monthly debt payments — mortgage plus all other recurring obligations including car loans, student loans, and credit card minimums — should not exceed 36% of your gross monthly income.

How much mortgage can I afford based on income — reference table:

Annual income $40,000 (monthly gross $3,333): Maximum PITI at 28% = $933. After tax and insurance (estimated $350/month), maximum P&I = $583. Maximum loan at 6.75% / 30 years ≈ $89,000.

Annual income $60,000 (monthly gross $5,000): Maximum PITI = $1,400. Maximum P&I ≈ $1,050. Maximum loan ≈ $162,000.

Annual income $80,000 (monthly gross $6,667): Maximum PITI = $1,867. Maximum P&I ≈ $1,517. Maximum loan ≈ $234,000.

Annual income $100,000 (monthly gross $8,333): Maximum PITI = $2,333. Maximum P&I ≈ $1,983. Maximum loan ≈ $305,000.

Annual income $120,000 (monthly gross $10,000): Maximum PITI = $2,800. Maximum P&I ≈ $2,450. Maximum loan ≈ $377,000.

Annual income $150,000 (monthly gross $12,500): Maximum PITI = $3,500. Maximum P&I ≈ $3,150. Maximum loan ≈ $485,000.

Annual income $200,000 (monthly gross $16,667): Maximum PITI = $4,667. Maximum P&I ≈ $4,317. Maximum loan ≈ $664,000.

These figures assume 6.75% on a 30-year fixed conventional loan with no existing major debts. Your actual maximum will vary based on credit score, existing debt commitments, and lender-specific criteria.

To convert your hourly wage, freelance income, or variable pay to the annual and monthly gross figures lenders use, the annual income calculator and salary to hourly calculator handle these conversions instantly. For a complete affordability assessment including your existing debts and deposit, the mortgage house affordability calculator models everything in one place.

How Is the Mortgage Calculator Based on Income?

The mortgage calculator itself is not based on income — it calculates payment for a given loan amount. The income connection comes in the step before: determining the right loan amount to enter.

The correct process is:

Step 1: Calculate your gross monthly income. Step 2: Multiply by 0.28 to find your maximum PITI. Step 3: Subtract estimated monthly taxes and insurance to find your maximum P&I. Step 4: Enter that P&I figure as your target and work backwards — adjusting home price, down payment, and rate until the calculator output matches your target.

This reverse-engineering approach is how experienced buyers use a mortgage calculator. Rather than entering a price and hoping the payment is affordable, you start with the affordable payment and find the price that fits it.

Can I Afford a Mortgage on My Income?

The honest answer has two parts. The lender's answer — based on income multiples and debt-to-income ratios — determines how much they will lend. Your personal answer — based on what payment you can sustain without financial stress, maintain your lifestyle, and still save for retirement — may be meaningfully lower.

Lenders will often approve the maximum their guidelines allow. That maximum is not a recommendation. It is a ceiling. Borrowing at the ceiling leaves no buffer for rate increases, job changes, medical events, or the general financial uncertainty that characterises most households over a 30-year horizon.

A practical rule: your mortgage payment (PITI) should feel comfortable at your current income, not dependent on expected future raises.

Can I Afford Two Mortgages? — The Calculation

Carrying two mortgages simultaneously — whether for a second home, a vacation property, or a buy-to-let investment — is financially feasible for some households and requires the same affordability framework applied to the combined debt load.

The combined DTI test:

Add your primary mortgage PITI to the proposed second mortgage PITI. Divide by gross monthly income. If the combined figure exceeds 43% (the conventional maximum back-end DTI for qualified mortgages), lenders will typically decline. Most lenders apply further scrutiny to second-home and investment property applications, often requiring 15–25% down payment on the second property and higher credit scores.

Offsetting rental income: For investment properties, lenders typically allow 75% of projected rental income to offset the second mortgage payment in their DTI calculation. If the property will rent for $2,000/month, lenders count $1,500 as income when assessing affordability.

Example — primary mortgage $1,800 PITI, investment property proposed $1,400 PITI, rental income $1,800/month:

Gross monthly income: $10,000. Existing DTI with primary mortgage: 18%. Proposed investment property mortgage: $1,400. Rental income credit (75%): $1,350. Net additional debt: $1,400 − $1,350 = $50. Combined DTI: ($1,800 + $50) ÷ $10,000 = 18.5%. This borrower qualifies comfortably.

Can I Get a Mortgage? — Eligibility Factors Explained

Beyond income and affordability, lenders assess several eligibility factors. Understanding them before applying avoids surprises and helps you prepare.

Credit score: In the US, conventional loans typically require a minimum FICO score of 620, though scores below 740 attract meaningfully higher rates. FHA loans allow scores from 580 (3.5% down) or 500 (10% down). In the UK, Canada, and Australia, equivalent credit reference data applies — clean payment history is the single most important factor universally.

Employment and income stability: Lenders want two years of stable income history in the same field. Salaried employees have the easiest path. Self-employed borrowers need two years of tax returns showing consistent income. Contract workers typically need evidence of ongoing contracts. Recent job changes within the same industry are generally acceptable; recent career changes can raise questions.

Existing debts: Every monthly debt commitment — car finance, student loans, personal loans, credit card minimums — reduces the mortgage you qualify for by reducing available DTI headroom. Paying down high-balance debts before applying can meaningfully increase your borrowing capacity. The debt calculator shows your current total debt picture and what payoff sequence would improve your DTI fastest.

Down payment source: Lenders require evidence that your down payment has been in your account for at least 60–90 days (the "seasoning" requirement). Gift funds from family are typically acceptable with a gift letter confirming no repayment is expected.

Property type: Primary residences, second homes, and investment properties attract different rates, down payment requirements, and eligibility criteria. Condominiums in certain complexes, properties with non-residential income, and certain property types face additional lender requirements.

Should I Refinance My Mortgage? — Complete Analysis

Refinancing replaces your current mortgage with a new loan — usually to get a lower rate, change the term, access equity, or switch from variable to fixed. The fundamental question is whether the savings justify the cost.

How to Calculate Whether Refinancing Makes Sense

The break-even calculation:

Break-even months = Total closing costs of refinance ÷ Monthly payment saving

If refinancing costs $4,500 in closing costs and saves you $220/month, break-even is 4,500 ÷ 220 = 20.5 months — approximately 21 months. If you plan to stay in the home for more than 21 months, refinancing saves money. If you are likely to move sooner, it costs more than it saves.

Detailed real-world example:

Current mortgage: $275,000 remaining, 24 years left, at 7.5%. Monthly P&I: $2,052. Refinance option: $275,000 at 6.5% for 24 years. New monthly P&I: $1,856. Monthly saving: $196. Closing costs: $5,200. Break-even: 5,200 ÷ 196 = 26.5 months.

Total interest saved over 24 years at lower rate: approximately $56,500. Net saving after closing costs: approximately $51,300.

If you are staying more than two and a half years — and most homeowners do — this refinance is financially clear. The refinance calculator models your specific numbers including closing cost scenarios, so you can determine your personal break-even before committing to anything.

Should I Refinance to a Shorter Term?

Refinancing from a 30-year to a 15-year mortgage simultaneously reduces your rate and accelerates payoff, but significantly raises your monthly payment. This only makes sense if your income reliably supports the higher payment.

$275,000 refinanced from 7.5% (26 years remaining) to 6.25% (15-year term):

Current payment: $2,052. New 15-year payment: $2,359. Monthly increase: $307. Total interest remaining at current rate: $421,700. Total interest on 15-year refinance: $149,620. Interest saved: $272,080.

The $307/month increase saves over $272,000 in interest. If your budget comfortably absorbs it, this is one of the most financially powerful moves an existing homeowner can make.

Should I Switch Mortgage — Fixed vs Variable?

The fixed versus variable decision turns on your expectations about interest rate direction and your tolerance for payment uncertainty.

A fixed rate locks your payment for the full term regardless of what central bank rates do. This is valuable when rates are low or expected to rise, and when budget certainty matters more than potential savings.

A variable or tracker rate mortgage moves with the benchmark rate — typically the federal funds rate in the US, the Bank of England base rate in the UK, or equivalent central bank rates in Canada and Australia. When rates fall, your payment falls automatically. When rates rise, so does your payment.

The practical 2026 consideration: In the US, the Federal Reserve has begun a rate-cutting cycle from the 2023 highs. Borrowers who fix now capture current rates but may miss further falls. Borrowers who take variable rates benefit if cuts continue but carry the risk of rates reversing. A 2-year fix is the pragmatic middle ground — short enough to remortgage if rates fall significantly, long enough to avoid immediate re-pricing risk.

Should I Overpay My Mortgage?

Making overpayments above your required monthly payment is one of the most financially effective things you can do with surplus income — whether that surplus is $50 or $1,000 per month.

How Overpayments Work Mathematically

Every dollar of overpayment reduces your principal immediately and permanently. The interest saving is not just the rate applied to that dollar for one month — it is the rate applied to that dollar for every remaining month of the loan, because all future interest calculations are based on a lower balance.

Overpayment impact table — $300,000 loan at 6.75%, 30-year term:

No overpayment: 30 years, total interest $400,682. $100/month extra: 27 years 4 months, total interest $349,200. Saving: $51,482, 2 years 8 months early. $200/month extra: 25 years 1 month, total interest $304,800. Saving: $95,882, 4 years 11 months early. $300/month extra: 23 years 2 months, total interest $267,100. Saving: $133,582, 6 years 10 months early. $500/month extra: 20 years, total interest $208,500. Saving: $192,182, 10 years early. $1,000/month extra: 15 years 8 months, total interest $149,200. Saving: $251,482, 14 years 4 months early.

The $100/month rule of thumb: On most 30-year mortgages at current rates, an extra $100/month saves roughly $50,000 in total interest and shaves 2–3 years off the term. It is one of the highest guaranteed returns available on any financial decision.

Should I Overpay Mortgage or Invest?

This is the most contested question in personal finance for homeowners with surplus income. The mathematical answer depends entirely on your mortgage rate compared to expected investment returns.

If your mortgage rate is above 6.5%: overpaying provides a guaranteed, risk-free return equal to your rate. No investment product offers a comparable guaranteed return. Overpaying is almost always the better risk-adjusted decision.

If your mortgage rate is between 4% and 6.5%: the comparison becomes genuinely close. Long-run equity market returns historically average 7–10% annually, but with significant volatility. Overpaying your mortgage is certain. Investment returns are not. Your risk tolerance matters as much as the arithmetic.

If your mortgage rate is below 4%: the long-run historical equity premium suggests investing is likely the better mathematical decision — though overpaying offers psychological certainty and eliminates a financial obligation, which has real value beyond the spreadsheet.

The practical framework for most borrowers in 2026:

First, always maintain 3–6 months of emergency savings in accessible cash — never overpay at the expense of this buffer, because accessing equity requires refinancing. Second, always capture any employer 401(k) match before overpaying — the match is an immediate 100% return that no mortgage rate competes with. Third, after those two priorities, if your rate is above 6.5%, overpaying is likely your best available use of surplus funds.

The compound interest calculator models what the same overpayment amount grows to if invested over the same period, so you can see both outcomes with your specific numbers. The savings goal calculator helps you build the emergency buffer before directing surplus funds to the mortgage.

Should I Pay More on My Mortgage Each Month — Even a Small Amount?

Yes — and the earlier in the loan, the more powerful the effect. An extra $50/month added from month one of a $250,000 30-year mortgage at 6.75% saves approximately $33,000 in interest and pays off the loan 2 years early. The same $50 added from year 10 saves approximately $14,000 and pays off the loan 11 months early. The compounding effect of early principal reduction is the reason acting sooner matters more than acting perfectly.

Should I Pay Off My Mortgage Early? — The Full Decision Framework

Paying off a mortgage entirely — clearing the full remaining balance before the scheduled end date — is a major milestone. Whether it is the right decision involves weighing guaranteed financial return against opportunity cost and liquidity.

The Case For Early Payoff

Eliminating your mortgage early provides a guaranteed return equal to your interest rate on the amount prepaid. At 6.75%, every dollar used to pay off the mortgage saves 6.75% annually in perpetuity — better than any savings account, comparable to bond returns, and achieved with zero risk.

It frees your entire monthly mortgage payment — typically $1,500 to $3,000 — to redirect to retirement savings, investment, or lifestyle. For people approaching retirement, a paid-off home dramatically reduces the monthly income needed to maintain their standard of living. It eliminates the largest single financial obligation most households carry, reducing both financial stress and exposure to future rate risk.

The Case Against Early Payoff

If your rate is low (below 5%), long-run equity returns may exceed the guaranteed saving from prepayment, making investment the better mathematical choice. Mortgage interest may be tax-deductible if you itemise, reducing your effective rate. Home equity is illiquid — money used to prepay cannot be accessed without refinancing or selling. Maxing tax-advantaged accounts (401(k), IRA, ISA, RRSP depending on country) before prepaying is almost always the better sequencing.

Should I Pay Off Mortgage Early or Invest? — The Retirement Scenario

For buyers within 10 years of retirement, the decision becomes more specific. A mortgage entering retirement creates fixed monthly obligations that must be met from retirement income or portfolio withdrawals. If withdrawing from a retirement portfolio to make mortgage payments, you are paying the mortgage at the cost of reduced investment compounding.

The pension calculator and 401(k) calculator project how your retirement portfolio grows under different contribution scenarios — including the scenario where former mortgage payments are redirected to retirement savings after payoff.

Should I Buy Mortgage Points? — Break-Even Analysis

Mortgage discount points are upfront fees paid to reduce your interest rate. Each point costs 1% of the loan amount and typically reduces the rate by 0.25%, though this varies by lender.

When points make financial sense:

$320,000 loan. One point costs $3,200. Rate reduction: 0.25% (from 6.75% to 6.50%). Monthly payment without points: $2,075. Monthly payment with points: $2,022. Monthly saving: $53. Break-even: $3,200 ÷ $53 = 60.4 months — exactly 5 years.

If you stay in the home for more than 5 years, points save money. If you sell or refinance before 5 years, they cost money. Over the full 30-year term, that point saves $53 × 300 months = $15,900 minus the $3,200 cost = $12,700 net saving.

Two points at the same reduction: $6,400 cost, $106/month saving, same 5-year break-even, $31,600 net saving over 30 years.

The refinance risk: If rates fall and you refinance within the break-even period, you lose the unrecouped portion of the points cost. Points make most sense for buyers who are confident they will stay in the property for at least 5–7 years without refinancing.

Do Mortgage Calculators Include Taxes and Insurance?

Basic mortgage calculators calculate only the principal and interest payment — the money going directly to the lender. A complete mortgage calculator, like the one on this page, includes optional fields for property taxes, homeowners insurance, PMI, and HOA fees, allowing you to calculate your true total monthly housing cost.

What each component adds:

Property taxes: Entered as an annual amount or percentage of home value. National average in the US is approximately 1.1% annually, though this ranges from 0.28% in Hawaii to 2.49% in New Jersey.

Homeowners insurance: Nationally averages roughly $1,500–$2,000/year but varies significantly by state, property age, roof condition, claims history, and proximity to flood/hurricane zones.

PMI (Private Mortgage Insurance): Required on conventional loans with less than 20% down. Typically 0.5%–1.5% of loan amount annually. Added to monthly payment until you reach 20% equity.

HOA fees: Fixed monthly costs for condominiums and many planned communities. Range from $100/month for basic communities to $1,000+/month for luxury high-rises with full amenities.

Do mortgage calculators include closing costs?

No — closing costs are upfront purchase expenses, not monthly mortgage costs. They typically total 2%–5% of the loan amount and must be paid at closing from savings rather than financed into the mortgage (in most conventional loan scenarios). Common closing costs include origination fees, appraisal, title insurance, attorney fees, prepaid taxes, and homeowners insurance.

Do mortgage calculators include escrow?

When you enter property taxes and insurance into the calculator, the resulting total monthly payment is effectively your fully-loaded PITI payment — which is what your lender collects each month including the escrow portion. Most lenders collect 1/12th of your annual taxes and insurance each month and hold this in an escrow account, paying the bills on your behalf when due.

Mortgage Calculator by Country — US, UK, Canada, and Australia

US Mortgage Calculator — Key Facts

The US mortgage market is unique in offering the 30-year fixed-rate mortgage — a product that locks your rate and payment for three decades. This is not standard in the UK, Canada, or Australia. In the US, conventional loans are governed by Fannie Mae and Freddie Mac guidelines, with FHA, VA, and USDA programmes adding options for specific buyer profiles.

Current rate context (mid-2026): 30-year fixed rates broadly 6.25%–7.25% depending on credit profile. 15-year fixed rates approximately 0.5%–0.75% below 30-year rates. FHA rates typically 0.1%–0.3% below conventional equivalent.

Can I Afford a Mortgage Calculator UK — Key Differences

UK mortgages differ from US in critical ways. Fixed-rate terms are typically 2 or 5 years (not 30), after which you remortgage or revert to the lender's Standard Variable Rate. The Bank of England base rate (currently 4.25% as of mid-2026) directly influences all variable and tracker rates. UK lenders typically cap borrowing at 4.5 times annual income.

The UK stamp duty system adds significant purchase costs: in England, first-time buyers pay no SDLT on properties up to £425,000, and standard buyers pay 5% on the portion between £250,000 and £925,000.

What Can I Afford Mortgage Calculator Canada

Canada's mortgage market mandates a stress test — all borrowers must qualify at the higher of either the contracted rate plus 2%, or 5.25% — regardless of the actual rate. This is why Canadian borrowers can often borrow less than their income suggests. The stress test is designed to ensure borrowers could still afford payments if rates rise after taking the mortgage.

CMHC mortgage insurance is mandatory for mortgages with less than 20% down payment, adding 2.8%–4% of the loan amount to the mortgage (financed in). Provincial land transfer taxes add to purchase costs, with Ontario and British Columbia having particularly significant transfer tax obligations.

Australia — Offset Account Mortgages and Variable Rate Dominance

Australia's mortgage market is dominated by variable rates, unlike the US. Australian lenders widely offer offset accounts — savings accounts linked to your mortgage where the balance offsets your loan balance for interest calculation purposes. If you have $30,000 in an offset account against a $350,000 mortgage, you pay interest only on $320,000 — the offset reduces interest without reducing access to the funds.

Most Australian states charge stamp duty (called land transfer duty) at rates of 3%–5.5% on mid-range property values, adding significantly to upfront purchase costs.

Mortgage Payment Comparison Tables — Every Major Scenario

Monthly P&I payment by loan amount (30-year fixed):

Loan Amount	At 5.5%	At 6.0%	At 6.5%	At 7.0%	At 7.5%
$150,000	$851	$899	$948	$998	$1,049
$200,000	$1,136	$1,199	$1,264	$1,331	$1,398
$250,000	$1,419	$1,499	$1,580	$1,663	$1,748
$300,000	$1,703	$1,799	$1,896	$1,996	$2,098
$350,000	$1,987	$2,098	$2,212	$2,329	$2,447
$400,000	$2,271	$2,398	$2,528	$2,661	$2,797
$450,000	$2,555	$2,698	$2,844	$2,994	$3,147
$500,000	$2,839	$2,998	$3,161	$3,327	$3,496
$600,000	$3,407	$3,597	$3,793	$3,992	$4,196
$700,000	$3,974	$4,196	$4,425	$4,657	$4,895

30-year vs 15-year comparison — total cost at 6.75% / 6.25%:

Loan Amount	30yr Monthly	30yr Total Interest	15yr Monthly	15yr Total Interest	Interest Saved
$200,000	$1,297	$266,920	$1,716	$108,880	$158,040
$300,000	$1,946	$400,560	$2,573	$163,140	$237,420
$400,000	$2,595	$534,200	$3,431	$217,580	$316,620
$500,000	$3,243	$667,480	$4,289	$272,020	$395,460

How to Reduce Your Mortgage — Every Lever Available

Increase your down payment. The most direct lever. Every additional dollar of down payment reduces the loan amount one-for-one. Crossing the 20% threshold also eliminates PMI.

Get a lower interest rate. The most impactful lever over the full term. Shopping three or more lenders before committing is essential. Each 0.25% rate reduction on a $350,000 30-year loan saves approximately $16,000 in total interest.

Choose a shorter term. A 20-year term versus 30-year on $300,000 at 6.75% saves $147,000 in total interest and pays off 10 years sooner, at a cost of $312/month more. A 25-year term offers a middle ground many buyers overlook.

Buy discount points. Trading upfront cost for a lower rate makes sense if you plan to stay in the home beyond the break-even period.

Make overpayments. Voluntary overpayments above the required monthly amount reduce the balance faster, saving compounding interest over the remaining term.

Refinance when rates fall significantly. A rate drop of 0.75%–1% or more typically justifies refinancing if you plan to stay beyond the break-even period of roughly 2–3 years.

Eliminate PMI. Once you reach 20% equity through payments or appreciation, request PMI removal. This can save $100–$300/month with no other changes.

Frequently Asked Questions — Every Question a Real Buyer Asks

Are mortgage calculators accurate?

For principal and interest payments, a calculator using the correct amortisation formula is exact — not an estimate. The figure it produces is identical to what your lender calculates for the same inputs. Variations in your actual monthly statement come from property tax and insurance escrow adjustments, not from any inaccuracy in the payment formula.

What are mortgage rates calculator — how do I find current rates?

Mortgage rates change daily based on bond markets, Federal Reserve policy signals, and individual lender pricing decisions. For current rates, compare quotes from at least three lenders or use a mortgage broker who accesses multiple lenders simultaneously. The rate in the calculator should match your actual quoted rate, not a general market average, for the output to reflect your real payment.

How are mortgage payments calculated in simple terms?

Your lender takes your loan amount, divides the annual rate by 12 to get a monthly rate, then applies the amortisation formula to produce a fixed monthly payment. Most of the early payments are interest. Over time, more of each payment reduces the loan balance. By the final payment, almost all of it is principal.

Can I afford a mortgage calculator — what is the minimum income needed?

There is no universal minimum income for a mortgage. Lenders look at the percentage of income going to debt payments (DTI ratio), not an absolute income figure. Someone earning $40,000 can afford a $90,000–$100,000 mortgage just as legitimately as someone earning $150,000 can afford a $400,000 mortgage, provided the DTI ratios are similar.

Can I see a mortgage calculator for my specific situation?

The calculator at the top of this page is fully interactive. Enter your exact home price, down payment, rate, and term to see your specific monthly payment. Add your estimated property taxes and insurance to see your full PITI. Adjust the rate up or down to see how sensitive your payment is to rate changes.

Will a mortgage calculator affect my credit score?

No. Using an online mortgage calculator requires no credit check and has no interaction with credit bureaus. Only a formal mortgage application — which triggers a "hard inquiry" — affects your credit score. Multiple hard inquiries for mortgage purposes within a 45-day window are typically counted as one inquiry by credit scoring models.

Do mortgage calculators include property tax?

Basic calculators calculate only principal and interest. The calculator on this page includes an optional property tax field — enter your annual property tax amount or estimated rate to see your full monthly payment including the tax escrow component.

Can I afford two mortgages calculator — what do I need to qualify?

Qualifying for two mortgages simultaneously requires your combined DTI (both mortgage PITI payments plus all other debt) to stay within lender guidelines — typically 43–45% of gross monthly income for conventional loans. Investment property mortgages typically require 15–25% down and credit scores of 680+. Rental income from the second property can offset its payment in lender calculations, typically at 75% of market rent.

Is mortgage interest calculated daily or monthly?

In the US, mortgage interest is technically calculated daily and then multiplied by the number of days in the payment period — but since payments are monthly, the effect is equivalent to the monthly compounding calculation the mortgage calculator uses. The formula produces the same result because each monthly period has approximately 30 days. For early payoff, daily calculation means an extra payment mid-month saves a few days of interest beyond the monthly equivalent.

Should I pay more on my mortgage each month?

If your rate is above 6%, almost always yes — provided you have a 3–6 month emergency fund and are capturing any employer retirement match. Even $50–$100/month extra produces tens of thousands in interest savings over a 30-year loan. The earlier you start, the more each dollar saves.

What can I borrow mortgage calculator — what is the maximum?

Most US lenders cap borrowing at approximately 43–45% back-end DTI for conventional qualified mortgages. In practice, this means approximately 4–5 times annual income for borrowers with no significant other debts. The mortgage house affordability calculator calculates your specific maximum based on your income, existing debts, and available down payment.

Can I refinance my mortgage calculator — when is the right time?

The right time to refinance is when: the rate reduction saves enough monthly to recoup closing costs within your planned ownership horizon (typically 2–3 years); or when you want to change your term structure; or when you want to consolidate debt through a cash-out refinance. Use the refinance calculator to calculate your exact break-even for any refinance scenario.

How much should I pay in mortgage — what percentage of income?

The 28% rule is the conventional framework — your total housing payment (PITI) should not exceed 28% of gross monthly income. For greater long-term financial security, many advisors recommend keeping it below 25%. Going above 30% leaves limited buffer for other financial goals.

How much should I spend on mortgage — beyond the payment itself?

Budget total housing costs at 30–35% of gross income to cover the mortgage payment plus maintenance, repairs, utilities, and HOA fees. A common rule of thumb for maintenance is 1%–2% of the home's value annually — on a $350,000 home, that is $3,500–$7,000 per year ($290–$583 per month) in addition to the mortgage payment.

Complete Mortgage and Home Buying Toolkit

Every related decision in the home buying and ownership process has a tool:

The mortgage house affordability calculator determines the maximum purchase price your income and debts support — the right starting point before running any specific payment calculation.

The home loan EMI calculator provides a detailed month-by-month amortisation breakdown for any home loan structure, useful for comparing how different terms change the interest-to-principal split over time.

The refinance calculator calculates your exact break-even period for any refinance scenario, accounting for closing costs alongside rate reduction, so you can determine whether refinancing makes financial sense before applying.

The auto loan calculator and car loan EMI calculator model vehicle financing so you can understand how a car payment affects the DTI headroom available for your mortgage.

The debt calculator models all your outstanding debts simultaneously — mortgage, car, student loans, credit cards — showing your complete monthly obligation picture and how different payoff sequences affect total interest.

The compound interest calculator shows how mortgage overpayments compound to reduce your balance, and models the alternative — what the same money grows to if invested instead.

The savings goal calculator helps you build a down payment by calculating exactly how much to set aside monthly to reach your target in your desired timeframe.

The 401(k) calculator projects retirement portfolio growth, helping you compare directing surplus income to mortgage overpayments versus retirement contributions.

The payment calculator handles any loan type — personal loans, home equity loans, or any instalment borrowing alongside your primary mortgage.

The annual income calculator converts hourly, weekly, or variable compensation to the gross monthly income figure lenders use in every affordability assessment.

The EMI calculator handles loan repayment calculations in EMI format across any loan type, rate, and term — useful for comparing different loan structures on the same terms.

The mortgage calculator at the top of this page is free, requires no account, and produces your result in seconds. Run your numbers before you speak to a lender, before you make an offer, and every time a rate or term changes in your negotiation. The more precisely you know your numbers, the better decisions you make.

Last updated: May 2026 · Free to use · No sign-up required · Results in seconds · Not financial advice — consult a licensed mortgage professional before making borrowing decisions.