How a remaining loan balance works

The payment is fixed, but its composition is not. In month one on $250,000 at 6.5 percent, interest takes most of the $1,580.17 and only the small remainder reduces the balance. Sixty payments later the balance is $234,027.44, so only $250{,}000 - 234{,}027.44 = 15{,}972.56$ of the original loan has actually been cleared.

That is not a fee or a penalty. It is what charging interest on an outstanding balance does: while the balance is near its opening level, the interest charge is near its opening level too.

Amortisation is not linear. At the halfway point, 180 payments in, the balance is $181,397.85, which is well over half of what was borrowed. The remaining half of the term then clears all of that, because by then most of each payment is principal.

This is why a mortgage feels stuck for years and then suddenly moves. How amortisation works shows the split month by month, and it is worth looking at once, because the shape explains most of the behaviour people find surprising about home loans.

Three decisions need it. Refinancing needs the payoff figure, because that is the amount the new loan has to cover. Selling needs it, because the balance comes out of the proceeds. Equity calculations need it, since equity is value minus balance, which the loan to value calculator turns into a ratio.

An extra payment changes all of it. Anything above the scheduled amount reduces the balance immediately and removes every future interest charge that balance would have generated, which is why how extra payments work matters more early in a loan than late.

A lender's payoff quote adds interest accrued to the settlement date and any fees, so it is usually a little above the scheduled balance shown here. Use this figure for planning and the lender's quote for completing. The remaining loan balance calculator shows both the payment and the balance at any point in the schedule, and interest-only against amortising shows the alternative where the balance never moves at all. This is educational material, not financial advice.