Remaining Mortgage Balance Calculator

How it works

The balance left on an amortizing loan is not a straight line. Because early payments are mostly interest, principal comes down slowly at first and faster later. The remaining balance after a number of payments is the original loan grown by interest, minus all the payments made so far grown the same way:

• L — the original loan amount
• i — the monthly interest rate (APR ÷ 12)
• k — the number of payments already made
• M — the scheduled monthly payment

With the defaults above, a $320,000 loan at 7% over 30 years still owes about $301,221 after 5 years of payments. That means only about $18,779 of principal is gone so far, roughly 6% of the loan, even though you have paid in far more than that. The rest went to interest, which is exactly why early equity builds slowly.

✓ Every result is checked against independent reference math. See how we test the calculators →

A worked example: five years into a $320,000 loan

Picture a $320,000 mortgage taken out at 7% on a 30-year term, now five years in. The monthly payment of $2,129 has been leaving your account like clockwork, yet the payoff quote from your servicer still reads $301,221.

That feels slow because it is. Over those first five years only $18,779 of principal has actually come off, roughly 6% of the loan, since early payments are mostly interest. The other side of every $2,129 check went to the bank as the cost of borrowing, not toward what you owe.

Term length is where this really bites. Had you signed a 15-year loan instead, your balance today would sit at $247,721 rather than $301,221, a $53,500 difference in equity built over the same five years. Enter your own loan amount, rate, and years paid to see exactly where your balance stands right now.

Why the balance matters

• Selling or refinancing. Your payoff is the remaining balance plus a little accrued interest, and it sets how much cash a sale leaves you or how big a new loan needs to be.
• Dropping PMI. Once the balance falls below 80% of the home value, you can usually request that private mortgage insurance be removed.
• Deciding on extra payments. Seeing how little principal is gone early is often the nudge that makes extra payments feel worthwhile.

Balance is not the same as equity

It is easy to treat your remaining balance and your equity as two sides of one coin, but they answer different questions. The balance is what you owe the lender, and it comes straight from the loan. Equity is what you actually own, and it depends on the home’s current value as well as the balance.

The gap between them is where a lot of the real financial picture lives.

• Equity is value minus balance. If the home is worth more than you paid, your equity outruns your paydown; if values fall, equity can lag well behind.
• Paydown is guaranteed, appreciation is not. Every scheduled payment reliably lowers the balance, while the value side swings with the market.
• Both matter for PMI. Mortgage insurance can come off once equity reaches 20%, whether you got there by paying down the balance or by the home appreciating.
• A sale nets the equity, not the balance. When you sell, the balance is paid off first, and what is left, minus costs, is the cash you walk away with.

How extra payments change the number

This calculator assumes you paid exactly the scheduled amount every month. The moment you add anything extra, your real balance drops below the figure shown here, and the gap only widens over time. That is because each extra dollar of principal is removed from the balance all future interest is charged on, so it keeps working for you month after month.

• Early extras matter most. A dollar of extra principal in year one avoids far more future interest than the same dollar in year twenty.
• The effect compounds. A lower balance means less interest next month, which means more of your regular payment hits principal too, quietly accelerating everything.
• Statements tell the truth. If you have made extra payments, trust your lender’s current balance over any estimate that assumes a perfect schedule.
• Recasting is an option. After a large lump sum, some lenders will re-amortize the loan to a lower payment on the reduced balance, if you ask.

Estimating your balance without a statement

You do not need a lender statement to get a close read on what you owe. If you know the original loan amount, the rate, the term, and how long you have been paying, the balance is fully determined by the amortization math this tool runs. That makes it handy for quick what-if planning: checking where you will stand in a few years, or reconstructing a number you have misplaced.

• Use the original terms. Enter the loan as it started, not the current balance, along with the full term and the years paid so far.
• Fixed-rate only. The estimate assumes a steady rate and payment, so an adjustable loan that has already reset will differ from the figure shown.
• Treat it as an estimate. Rounding, escrow items, and any missed or extra payments mean the exact payoff can drift a little from the clean calculation.