Calculate remaining loan balance at any point in time. See equity progress, payoff acceleration with extra payments, and payment history breakdown.
Knowing your exact remaining loan balance is essential for financial planning — whether you are considering refinancing, making a lump-sum payment, selling a property, or simply tracking your progress toward being debt-free. The remaining balance depends on the original terms, interest rate, and how many payments you have made.
Due to amortization, the balance does not decline linearly. In the early years, most of each payment goes to interest, so the principal drops slowly. This means that after 10 years of a 30-year mortgage, you may have only paid off 15-20% of the principal despite making a third of the total payments.
This calculator shows your current balance at any point in the loan, the split between principal and interest paid to date, an equity progress bar, payoff acceleration scenarios showing how extra monthly payments can shorten your remaining term, and the key milestones — when you will reach 25%, 50%, 75%, and 90% paid off.
Loan statements show your current balance, but they do not show the full picture — how much of your payments went to interest vs principal, how far along you are, and how extra payments can dramatically change your payoff date. This calculator provides the context that statements lack. Keep these notes focused on your operational context.
Balance after k payments: B(k) = P × [(1+r)^n − (1+r)^k] / [(1+r)^n − 1], where P = original principal, r = periodic rate, n = total periods, k = periods elapsed.
Result: Current balance: $281,870 — Principal paid: $18,130 — Interest paid: $95,210 — Equity: 6%
After 5 years of a $300K mortgage at 6.5%, only $18,130 of principal has been repaid — just 6% equity from payments. Meanwhile, $95,210 has gone to interest. Adding $250/month extra from this point would pay off the loan 9 years sooner and save $113K in interest.
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This is the nature of amortization. In the early years, the interest portion of each payment is very high because the balance is large. On a 30-year mortgage at 6.5%, only about 20% of the first payment goes to principal. As the balance decreases, the principal portion grows, and the balance declines faster in later years.
Loan equity from payments = Original loan − Current balance. If you also bought with a down payment, total home equity = Home value − Current loan balance. This calculator shows equity from payments. Actual equity also reflects any home value appreciation or depreciation.
A lump sum reduces the balance immediately, saving more interest than the same amount spread over months. However, monthly extra payments provide discipline and steady progress. Ideally, apply lump sums when available (bonuses, tax refunds) and also maintain regular extra payments.
This calculator uses the standard amortization formula and assumes regular on-time payments with no missed payments or late fees. Your actual balance may differ slightly due to rounding, payment timing, escrow adjustments, or rate changes (for variable-rate loans).
Refinancing makes sense if you can lower the rate by 0.75%+ and plan to stay long enough to recoup closing costs (break-even typically 2-4 years). Prepaying makes sense when rates are already low and you want to reduce the term without refinancing costs. Compare both scenarios.
Maximize extra payments — every dollar above the minimum goes directly to principal. Bi-weekly payments (26 half-payments = 13 full payments/year) add one extra payment annually. Even rounding up to the nearest $100 helps. The payoff acceleration table shows the impact of various extra payment amounts.