Amortization Schedule Calculator
Generate a complete month-by-month amortization schedule. See exactly how each payment splits between principal and interest, and how extra payments accelerate your payoff.
Principal vs Interest Over Time
Each bar shows how your annual payments split between principal (green) and interest (red). Watch the balance shift over time.
Yearly Summary
| Year | Annual Principal | Annual Interest | End Balance | Cumulative Interest |
|---|---|---|---|---|
| 2026 | $1,930 | $11,344 | $298,070 | $11,344 |
| 2027 | $3,482 | $19,272 | $294,588 | $30,616 |
| 2028 | $3,716 | $19,039 | $290,872 | $49,655 |
| 2029 | $3,964 | $18,790 | $286,908 | $68,445 |
| 2030 | $4,230 | $18,524 | $282,678 | $86,969 |
| 2031 | $4,513 | $18,241 | $278,165 | $105,210 |
| 2032 | $4,816 | $17,939 | $273,349 | $123,149 |
| 2033 | $5,138 | $17,616 | $268,211 | $140,766 |
| 2034 | $5,482 | $17,272 | $262,729 | $158,038 |
| 2035 | $5,849 | $16,905 | $256,880 | $174,943 |
| 2036 | $6,241 | $16,513 | $250,639 | $191,457 |
| 2037 | $6,659 | $16,095 | $243,980 | $207,552 |
| 2038 | $7,105 | $15,649 | $236,875 | $223,202 |
| 2039 | $7,581 | $15,174 | $229,294 | $238,375 |
| 2040 | $8,088 | $14,666 | $221,205 | $253,041 |
| 2041 | $8,630 | $14,124 | $212,575 | $267,165 |
| 2042 | $9,208 | $13,546 | $203,367 | $280,712 |
| 2043 | $9,825 | $12,930 | $193,542 | $293,641 |
| 2044 | $10,483 | $12,272 | $183,059 | $305,913 |
| 2045 | $11,185 | $11,570 | $171,875 | $317,482 |
| 2046 | $11,934 | $10,820 | $159,941 | $328,303 |
| 2047 | $12,733 | $10,021 | $147,207 | $338,324 |
| 2048 | $13,586 | $9,168 | $133,621 | $347,493 |
| 2049 | $14,496 | $8,259 | $119,125 | $355,751 |
| 2050 | $15,467 | $7,288 | $103,659 | $363,039 |
| 2051 | $16,503 | $6,252 | $87,156 | $369,291 |
| 2052 | $17,608 | $5,147 | $69,549 | $374,438 |
| 2053 | $18,787 | $3,968 | $50,762 | $378,405 |
| 2054 | $20,045 | $2,709 | $30,716 | $381,114 |
| 2055 | $21,388 | $1,367 | $9,329 | $382,481 |
| 2056 | $9,329 | $152 | $0 | $382,633 |
Full Monthly Schedule
Click any year to expand the month-by-month breakdown.
How to Read Your Amortization Schedule
An amortization schedule is a complete table showing every payment you will make over the life of your loan. Each row breaks a single payment into two parts: principal (the amount that reduces your loan balance) and interest (the cost of borrowing). In the early years of a mortgage, the vast majority of each payment goes toward interest because the lender charges interest on the full outstanding balance. On a $300,000 loan at 6.5%, your first monthly payment of $1,896 includes roughly $1,625 in interest and only $271 toward principal.
As you make payments month after month, something powerful happens: the principal portion grows and the interest portion shrinks. This is because each payment reduces your balance slightly, so the next month's interest charge is calculated on a smaller number. By the midpoint of a 30-year mortgage, the split is roughly 50/50. In the final years, nearly your entire payment goes to principal. The crossover year highlighted in the yearly summary above marks the exact point where principal begins to exceed interest — a milestone that many homeowners find motivating.
Extra payments are one of the most effective tools available to borrowers. Even modest additions — $100 or $200 per month — can save tens of thousands in interest and shave years off your mortgage. The reason is compounding in reverse: every extra dollar you pay reduces your balance immediately, which means every future payment has a smaller interest charge, which means more of each future payment goes to principal. The earlier you start making extra payments, the greater the benefit.
Understanding your amortization schedule is especially valuable when you are comparing loan offers, considering a refinance, or evaluating how much equity you have built. If a lender offers you a lower rate, this schedule shows you exactly how much interest you would save over the remaining term. If you are thinking about selling, the balance column tells you precisely how much equity you have at any point. And if you are debating between a 15-year and 30-year mortgage, comparing the two schedules side by side makes the trade-off between monthly cash flow and total interest crystal clear.
When you sit down with a lender, bring your amortization schedule. It demonstrates that you understand the true cost of the loan — not just the monthly payment, but the total interest you will pay. Ask your lender to match the numbers. If their schedule differs, ask why. Common reasons include escrow adjustments, PMI, or rounding differences. A well-informed borrower is in a stronger negotiating position.