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Finance & Business · pattern A, Numeric fields

Mortgage payments, deposit and loan-to-value.

Enter the property price, deposit, rate and term for the monthly payment, the loan-to-value ratio and the total interest over the full term.

Inputs

The formula used

M = P·i ÷ (1 − (1 + i)^−n), on the amount borrowed

The amount borrowed is the price less the deposit. Loan-to-value drives the interest rate you are offered, in steps at 90%, 85%, 75% and 60%.

Monthly payment

1,443.95

Amount borrowed
252,000.00
Loan to value
90.00 %
Total repaid
433,185.70
Total interest
181,185.70
Payment if the rate rose 2 points
1,749.06
Deposit needed for 75% LTV
70,000.00

Excludes fees, insurance, property taxes and service charges, which together add materially to the monthly cost. Rates are usually fixed for a short initial period, not the full term.

Stress-test the rate, not just the payment.

Most mortgage rates are fixed for two to five years and then revert, so the payment you can afford today has to survive the rate you might face later. The panel shows the payment two points higher for that reason — the standard stress test lenders themselves apply, and the figure that decides whether a mortgage is affordable rather than merely available.

Questions about mortgage

Why does loan-to-value matter so much?
Because it prices the lender's risk. Rates step down at 90%, 85%, 75% and 60%, so a slightly larger deposit can cross a band and cut the rate.
Repayment or interest-only?
Repayment clears the balance over the term. Interest-only has lower payments and leaves the whole balance due at the end, which needs a credible plan.
How much interest do I pay overall?
Over 25 years at typical rates, roughly half the amount borrowed again. The total interest figure above makes it concrete.

A calculator handles the arithmetic. It cannot teach you the method.

If the number is not the part you are stuck on, that is what the service is for — a specialist who explains the working, not just the answer.

These are coursework tools. Nothing here is financial advice, no figure accounts for tax rules in your jurisdiction, and no result should be relied on for a real borrowing or investment decision.