The amortisation schedule is the mortgage's full biography: for each year (or month), the interest paid, the capital repaid and the balance remaining. Enter your loan, rate and term to generate it — and to see the shape most borrowers find surprising: early payments are mostly interest, with the capital share growing steadily as the balance falls.
The schedule turns abstract decisions concrete: what the balance will be at your fix's expiry (your remortgage LTV), what five years of overpayment does to year fifteen, where the interest really concentrates.
The early-years interest weighting is structural, not a trick: interest accrues on the outstanding balance, and the balance is largest at the start. The crossover — where payments become majority-capital — arrives around the term's middle at typical rates, earlier at lower rates and with overpayments.
The balance-at-date readings are the practically useful ones: your projected balance at fix expiry sets your remortgage LTV band, and the schedule shows whether a boundary (85%, 80%, 75%) will be crossed naturally or needs an overpayment nudge — the band arithmetic our LTV calculator frames.
Overpayments redraw the whole schedule — pulling the crossover forward and compounding the interest saving, as the overpayment calculator quantifies. Term choices show their true cost here too: the 30-year term's lower payment buys years of extra majority-interest payments, a trade the schedule makes visible in a way the monthly figure never does.
We use the schedule on every recommendation where term or overpayment strategy is in play — because the year-by-year picture is where those decisions actually live.
Structurally — interest accrues on the outstanding balance, which is largest at the start. The capital share grows every month as the balance falls, crossing into the majority around mid-term at typical rates. Overpayments pull the whole shape forward.
The schedule reads it directly — and that figure sets your remortgage LTV band, which prices your next deal. Checking whether a band boundary will be crossed naturally or needs an overpayment nudge is one of the schedule’s most valuable uses.
The schedule shows it honestly: the lower monthly payment of a longer term buys additional years of majority-interest payments, and the total interest difference is usually startling. The trade can still be right — flexibility has value — but it should be made with the schedule in view.
Interest-only has no amortisation — the balance is flat and the schedule trivial, which is itself the point to understand: the capital is repaid by your separate strategy, not the payments. The repayment calculator’s interest-only mode covers the payment side.