Amortization Calculator
See every payment broken down into principal and interest.
Mortgage Details
Illustrative default rate. Use the rate you were actually offered, or see today's rates.
Summary
Amortization Schedule
| Month | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | $2,737 | $924 | $1,813 | $499,076 |
| 2 | $2,737 | $928 | $1,809 | $498,148 |
| 3 | $2,737 | $931 | $1,806 | $497,217 |
| 4 | $2,737 | $934 | $1,803 | $496,283 |
| 5 | $2,737 | $938 | $1,799 | $495,345 |
| 6 | $2,737 | $941 | $1,796 | $494,404 |
| 7 | $2,737 | $944 | $1,792 | $493,460 |
| 8 | $2,737 | $948 | $1,789 | $492,512 |
| 9 | $2,737 | $951 | $1,786 | $491,560 |
| 10 | $2,737 | $955 | $1,782 | $490,606 |
| 11 | $2,737 | $958 | $1,779 | $489,647 |
| 12 | $2,737 | $962 | $1,775 | $488,686 |
| 13 | $2,737 | $965 | $1,772 | $487,720 |
| 14 | $2,737 | $969 | $1,768 | $486,752 |
| 15 | $2,737 | $972 | $1,765 | $485,779 |
| 16 | $2,737 | $976 | $1,761 | $484,804 |
| 17 | $2,737 | $979 | $1,758 | $483,824 |
| 18 | $2,737 | $983 | $1,754 | $482,841 |
| 19 | $2,737 | $986 | $1,750 | $481,855 |
| 20 | $2,737 | $990 | $1,747 | $480,865 |
| 21 | $2,737 | $994 | $1,743 | $479,871 |
| 22 | $2,737 | $997 | $1,740 | $478,874 |
| 23 | $2,737 | $1,001 | $1,736 | $477,874 |
| 24 | $2,737 | $1,004 | $1,732 | $476,869 |
| 25 | $2,737 | $1,008 | $1,729 | $475,861 |
| 26 | $2,737 | $1,012 | $1,725 | $474,849 |
| 27 | $2,737 | $1,015 | $1,721 | $473,834 |
| 28 | $2,737 | $1,019 | $1,718 | $472,815 |
| 29 | $2,737 | $1,023 | $1,714 | $471,792 |
| 30 | $2,737 | $1,026 | $1,710 | $470,766 |
| 31 | $2,737 | $1,030 | $1,707 | $469,735 |
| 32 | $2,737 | $1,034 | $1,703 | $468,701 |
| 33 | $2,737 | $1,038 | $1,699 | $467,664 |
| 34 | $2,737 | $1,041 | $1,695 | $466,622 |
| 35 | $2,737 | $1,045 | $1,692 | $465,577 |
| 36 | $2,737 | $1,049 | $1,688 | $464,528 |
| 37 | $2,737 | $1,053 | $1,684 | $463,475 |
| 38 | $2,737 | $1,057 | $1,680 | $462,419 |
| 39 | $2,737 | $1,060 | $1,676 | $461,358 |
| 40 | $2,737 | $1,064 | $1,673 | $460,294 |
| 41 | $2,737 | $1,068 | $1,669 | $459,226 |
| 42 | $2,737 | $1,072 | $1,665 | $458,154 |
| 43 | $2,737 | $1,076 | $1,661 | $457,078 |
| 44 | $2,737 | $1,080 | $1,657 | $455,998 |
| 45 | $2,737 | $1,084 | $1,653 | $454,914 |
| 46 | $2,737 | $1,088 | $1,649 | $453,827 |
| 47 | $2,737 | $1,092 | $1,645 | $452,735 |
| 48 | $2,737 | $1,096 | $1,641 | $451,639 |
| 49 | $2,737 | $1,100 | $1,637 | $450,540 |
| 50 | $2,737 | $1,104 | $1,633 | $449,436 |
| 51 | $2,737 | $1,108 | $1,629 | $448,329 |
| 52 | $2,737 | $1,112 | $1,625 | $447,217 |
| 53 | $2,737 | $1,116 | $1,621 | $446,102 |
| 54 | $2,737 | $1,120 | $1,617 | $444,982 |
| 55 | $2,737 | $1,124 | $1,613 | $443,858 |
| 56 | $2,737 | $1,128 | $1,609 | $442,731 |
| 57 | $2,737 | $1,132 | $1,605 | $441,599 |
| 58 | $2,737 | $1,136 | $1,601 | $440,463 |
| 59 | $2,737 | $1,140 | $1,597 | $439,323 |
| 60 | $2,737 | $1,144 | $1,593 | $438,179 |
Understanding Mortgage Amortization
Amortization is the process of gradually paying off your mortgage over time through regular payments. Each payment is split between interest (the cost of borrowing) and principal (reducing your loan balance). In the early years, most of your payment goes to interest. As the balance shrinks, more of each payment goes to principal — this shift is called the amortization curve.
25-Year vs 30-Year Amortization
The amortization length has a massive impact on your total cost. On a $500,000 mortgage at 5%, a 25-year amortization results in a monthly payment of approximately $2,910 and total interest of about $373,000. Stretching to 30 years drops the payment to about $2,668 but increases total interest to roughly $460,000 — that is about $88,000 more in interest for the convenience of lower monthly payments. If you can afford the 25-year payment, it almost always makes financial sense.
The Impact of Shorter Amortization
Going shorter than 25 years — say 20 or 15 years — amplifies savings further but requires significantly higher payments. A 20-year amortization on $500,000 at 5% means payments around $3,286 and total interest of about $289,000, saving roughly $84,000 versus 25 years. A 15-year amortization pushes payments to about $3,940 but total interest drops to approximately $209,000. The trade-off is always monthly cash flow versus long-term savings.
How to Choose Your Amortization
Start with the longest amortization that qualifies you, then use prepayment privileges to pay it down faster. This gives you the safety net of a lower required payment while still benefitting from aggressive repayment when your budget allows. For insured mortgages, 25 years is the maximum unless you are a first-time buyer or buying a newly built home (30 years allowed, with a small extra insurance premium). If you have 20% or more down, the 30-year option gives flexibility — but always run the numbers to see the true cost of that extra 5 years.