Mortgage Payment Calculator
Work out your exact monthly mortgage payment — including property tax, insurance, PMI and HOA — then see how extra payments shrink your term and your interest bill. Built on the official CFPB amortisation formula.
Your mortgage
$80,000 down · 80.00% LTV
- Monthly payment
- $2,539
- Principal & interest
- $2,023
- Total interest
- $408,141
- Loan amount
- $320,000
Principal, interest & escrow
6.50% over 30 yrs
$80,000 down payment
Monthly payment breakdown
How each monthly dollar is split between principal, interest, taxes, insurance and fees.
- Principal & interest
- Property tax
- Home insurance
| Category | Value |
|---|---|
| Principal & interest | $2,023 |
| Property tax | $367 |
| Home insurance | $150 |
Total cost over the loan
Lifetime split of principal repaid versus interest charged.
- Principal
- Interest
- Taxes & insurance
| Category | Value |
|---|---|
| Principal | $320,000 |
| Interest | $408,141 |
| Taxes & insurance | $186,001 |
Balance and cumulative interest
Watch the outstanding balance fall while cumulative interest flattens out over time.
- Remaining balance
- Cumulative interest
| Category | Value |
|---|---|
| Y1 | Remaining balance: $316,423 · Cumulative interest: $20,695 |
| Y2 | Remaining balance: $312,607 · Cumulative interest: $41,150 |
| Y3 | Remaining balance: $308,535 · Cumulative interest: $61,349 |
| Y4 | Remaining balance: $304,191 · Cumulative interest: $81,276 |
| Y5 | Remaining balance: $299,555 · Cumulative interest: $100,912 |
| Y6 | Remaining balance: $294,609 · Cumulative interest: $120,238 |
| Y7 | Remaining balance: $289,332 · Cumulative interest: $139,232 |
| Y8 | Remaining balance: $283,701 · Cumulative interest: $157,873 |
| Y9 | Remaining balance: $277,693 · Cumulative interest: $176,136 |
| Y10 | Remaining balance: $271,283 · Cumulative interest: $193,998 |
| Y11 | Remaining balance: $264,444 · Cumulative interest: $211,430 |
| Y12 | Remaining balance: $257,146 · Cumulative interest: $228,404 |
| Y13 | Remaining balance: $249,360 · Cumulative interest: $244,889 |
| Y14 | Remaining balance: $241,053 · Cumulative interest: $260,853 |
| Y15 | Remaining balance: $232,189 · Cumulative interest: $276,260 |
| Y16 | Remaining balance: $222,731 · Cumulative interest: $291,074 |
| Y17 | Remaining balance: $212,640 · Cumulative interest: $305,254 |
| Y18 | Remaining balance: $201,873 · Cumulative interest: $318,759 |
| Y19 | Remaining balance: $190,385 · Cumulative interest: $331,542 |
| Y20 | Remaining balance: $178,128 · Cumulative interest: $343,557 |
| Y21 | Remaining balance: $165,050 · Cumulative interest: $354,750 |
| Y22 | Remaining balance: $151,096 · Cumulative interest: $365,067 |
| Y23 | Remaining balance: $136,207 · Cumulative interest: $374,450 |
| Y24 | Remaining balance: $120,321 · Cumulative interest: $382,836 |
| Y25 | Remaining balance: $103,372 · Cumulative interest: $390,158 |
| Y26 | Remaining balance: $85,287 · Cumulative interest: $396,344 |
| Y27 | Remaining balance: $65,991 · Cumulative interest: $401,320 |
| Y28 | Remaining balance: $45,403 · Cumulative interest: $405,003 |
| Y29 | Remaining balance: $23,436 · Cumulative interest: $407,307 |
| Y30 | Remaining balance: $0 · Cumulative interest: $408,141 |
Yearly principal vs interest
Early payments are mostly interest; later payments chip away at principal.
- Principal
- Interest
| Category | Value |
|---|---|
| Principal | $320,000 |
| Interest | $408,141 |
Amortization schedule
360 payments · 360 rows
Amortization schedule
360 payments · 360 rows
Baseline comparison: 30 yrs · $408,141 total interest. Figures are estimates for planning only and exclude closing costs, lender fees and any mortgage insurance premium variations.
The formula behind your payment
Every amortising loan — mortgage, auto loan or personal loan — is repaid using the same equation, standardised in the United States by the Consumer Financial Protection Bureau in Regulation Z, Appendix J:
M = P × [ i(1 + i)^n ] ÷ [ (1 + i)^n − 1 ]- M — the monthly principal and interest payment
- P — the loan principal (home price minus down payment)
- i — the monthly interest rate (annual rate ÷ 12)
- n — the total number of monthly payments (term × 12)
When the interest rate is zero the formula simplifies to M = P ÷ n. The remaining balance after any payment is given by the closed form used by Freddie Mac in Form 91: Bₖ = P(1 + i)ᵏ − M × [ ((1 + i)ᵏ − 1) ÷ i ].
Worked examples
United States — 30-year fixed
A $400,000 home with a 20% down payment ($80,000) leaves a $320,000 loan at 6.5% over 360 months. The monthly principal and interest payment is $2,022.62. Add 1.1% property tax ($366.67/mo) and $1,800 annual insurance ($150/mo) and the total monthly outflow is about $2,539. Over the full term you repay roughly $408,142 in interest.
United Kingdom — repayment mortgage
UK repayment mortgages use the identical amortisation maths. A £250,000 loan at 5.25% over 25 years (300 months) costs £1,498.12 per month. UK lenders must also show the total amount repayable under FCA MCOB rules, which for this example is about £449,436.
Eurozone — annuity mortgage
In the euro area the same annuity formula applies. A €300,000 loan at 3.75% over 30 years gives a monthly payment of €1,389.35. Because eurozone rates are typically lower and fixed periods shorter, borrowers should stress-test the payment at a higher rate — try moving the interest-rate slider up by two percentage points.
How to use this calculator
- Enter the home price and your down payment percentage.
- Set the interest rate and choose a 10, 15, 20 or 30-year term.
- Open the advanced panel to add property tax, insurance, PMI and HOA fees for a true all-in monthly figure.
- Add an extra monthly or yearly payment to see how much time and interest you save.
- Download the amortization schedule as CSV or share your exact scenario with a link.
Frequently asked questions
Still unsure about something? Our contact page reaches a real person, usually within two business days.