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Kordu Tools

Mortgage Calculator

Popular

Calculate monthly mortgage repayments, total interest, and view a full amortisation schedule.

Loan details

Monthly payment£1,535.22
Total payment£460,565.62
Total interest£210,565.62

Principal vs interest by year

Principal
Interest

Amortisation schedule

MonthPaymentPrincipalInterestBalance
11,535.22389.391,145.83249,610.61
21,535.22391.171,144.05249,219.44
31,535.22392.961,142.26248,826.48
41,535.22394.761,140.45248,431.72
51,535.22396.571,138.65248,035.14
61,535.22398.391,136.83247,636.75
71,535.22400.221,135.00247,236.54
81,535.22402.051,133.17246,834.48
91,535.22403.891,131.32246,430.59
101,535.22405.751,129.47246,024.85
111,535.22407.601,127.61245,617.24
121,535.22409.471,125.75245,207.77

How to use

  1. 1

    Enter your loan details

    Type your loan amount, annual interest rate, and choose a term in years. Use the quick-select buttons for common terms.

  2. 2

    Review your monthly payment

    Your monthly repayment, total payment over the loan's life, and total interest are calculated and displayed instantly.

  3. 3

    Explore the amortisation schedule

    Scroll through the month-by-month breakdown showing principal, interest, and remaining balance for every payment.

  4. 4

    Compare different terms

    Switch between 15, 20, 25, and 30-year terms to see how the term length affects your monthly payment and total interest.

Frequently asked questions

How is the monthly payment calculated?
The standard amortisation formula is used: M = P[r(1+r)^n] / [(1+r)^n - 1], where P is the principal, r is the monthly interest rate, and n is the total number of payments.
Does this include taxes and insurance?
No. This calculator covers principal and interest only. Property taxes, home insurance, and any fees are not included — add those separately for a full picture.
Can I use this for interest-only mortgages?
This tool calculates standard repayment (capital and interest) mortgages. For interest-only loans, your monthly payment would simply be the loan amount multiplied by the monthly interest rate.
Is my data sent anywhere?
No. All mortgage calculations happen entirely in your browser. Nothing is uploaded, stored, or logged.

Enter your loan amount, annual interest rate, and term to see your

monthly mortgage repayment calculated instantly. View the total cost

over the life of the loan and the total interest paid. An amortisation

schedule breaks down every month into principal, interest, and remaining

balance. A visual chart shows how the principal-to-interest ratio shifts

over time. Quick-select from 15, 20, 25, or 30-year terms. All

calculations run in your browser with no data sent to any server.

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