Every mortgage payment you make is split between two things: principal and interest. In the early years of your loan, the vast majority of each payment goes to interest — not to building equity. An amortization schedule shows you exactly how that split changes month by month over the life of your loan.
Use our free interactive Amortization Calculator below to see your full payment schedule instantly — no download, no sign-up required. Enter your loan amount, interest rate, and term and see every payment broken down to the penny.
📈 Amortization Calculator
Enter your loan details — your full payment schedule updates instantly
| Period | Payment | Principal | Interest | Balance | Cum. Interest |
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Get My Rate Quote →What Is an Amortization Schedule?
An amortization schedule is a complete table of your loan payments — showing exactly how each payment is divided between principal (the amount you borrowed) and interest (the cost of borrowing) for every payment over the life of the loan.
Understanding your amortization schedule is one of the most powerful things you can do as a homeowner — because it reveals a truth that surprises most buyers: in the early years of a 30-year mortgage, the vast majority of each payment goes to interest, not to building equity in your home.
The Front-Loading Truth — Why Early Payments Are Mostly Interest
On a $300,000 mortgage at 6.75% for 30 years, your first monthly payment of $1,945 breaks down like this: approximately $1,688 goes to interest and only $257 goes to principal. By year 15, that same payment splits roughly $1,150 to interest and $795 to principal. By year 28, you are paying more principal than interest for the first time.
This is why extra principal payments early in the loan have such a dramatic impact — every dollar of extra principal eliminates the future interest that would have accrued on that dollar for the remaining life of the loan. Use the extra payment field in the calculator above to see exactly how much earlier you pay off and how much interest you save.
Principal vs. Interest — How the Split Changes Over Time
💰 Principal
The portion of your payment that goes toward reducing your loan balance. Every dollar of principal paid builds equity in your home. Principal payments start small and grow steadily larger over the life of the loan as the outstanding balance decreases.
📈 Interest
The cost of borrowing money — calculated each month as a percentage of your remaining balance. Because your balance is highest at the beginning, interest charges are highest in the early years. As your balance decreases, so does the interest portion of each payment.
🏠 Equity Building
Your home equity grows every time you make a principal payment — plus whenever your home appreciates in value. The amortization schedule shows you exactly how much equity you are building with each payment and how your balance decreases over time.
🔄 Extra Payments
Even small extra principal payments made early in your loan can save tens of thousands in interest and shave years off your payoff date. Use the extra payment field in the calculator above — the impact is often surprising and motivating.
15-Year vs. 30-Year Mortgage — What the Amortization Shows
One of the most common questions homebuyers ask is whether to choose a 15-year or 30-year mortgage. The amortization schedule makes the trade-off crystal clear:
- 30-year mortgage — lower monthly payment, more flexibility, but significantly more total interest paid over the life of the loan
- 15-year mortgage — higher monthly payment, builds equity faster, and saves dramatically on total interest — often $100,000+ on a $300,000 loan
- 30-year with extra payments — the middle path. Take the lower required payment of the 30-year for cash flow flexibility, but make extra principal payments when possible to accelerate payoff and reduce total interest
The Rate Difference Matters More Than You Think
On a $300,000 mortgage, the difference between 6.75% and 6.25% is $89 per month — $1,068 per year — and over $32,000 in total interest over 30 years. This is why working with an independent mortgage broker who shops dozens of wholesale lenders matters so much — we are fighting for every fraction of a percent on your behalf. What looks like a small rate difference on paper is a very large number when you see it on an amortization schedule.
At First Commerce Financial we charge zero junk fees and shop your rate across dozens of wholesale lenders to find the lowest rate available for your specific scenario. Run the calculator at two different rates to see exactly what the difference means for your specific loan.
Frequently Asked Questions
What is the difference between an amortization schedule and a mortgage statement?
Your monthly mortgage statement shows your current balance, your payment due, and a breakdown of your last payment. An amortization schedule shows the complete projected breakdown of every future payment from now until your loan is paid off. Your statement shows where you have been — the amortization schedule shows where you are going.
Why does so much of my early payment go to interest?
Because mortgage interest is calculated on your remaining balance — and your balance is highest at the beginning. As you pay down principal, your balance decreases, so the interest portion of each payment decreases and the principal portion increases. This is called amortization — from the Latin for "to kill off" — meaning you are slowly killing off the debt with each payment. The schedule above shows you exactly how this progression unfolds.
How much interest do I save by making extra principal payments?
It depends on your loan balance, rate, and how early you make the extra payments. As a general rule, extra payments made in the first several years of a loan have a dramatically larger impact than the same payments made later — because they eliminate interest that would have compounded for the remaining life of the loan. Use the extra payment field in the calculator above to see the exact impact for your specific loan.
Should I choose a 15-year or 30-year mortgage?
It depends on your cash flow, financial goals, and risk tolerance. A 15-year mortgage builds equity faster and saves significantly on total interest — but the higher required payment leaves less monthly cash flow flexibility. A 30-year with strategic extra payments can achieve similar results with more flexibility. This is exactly the kind of conversation Kirk and Ken have with clients every day — call us and we will run your specific numbers.
Can I use this calculator for any type of loan?
Yes — the amortization calculator works for any fixed-rate installment loan: 30-year mortgage, 15-year mortgage, auto loan, personal loan, or any other fixed-rate debt. Simply enter the loan amount, rate, and term. For adjustable-rate mortgages, the schedule would change at each adjustment period — call us to discuss ARM amortization for your specific scenario.
See What Your Real Rate Looks Like
The calculator above uses whatever rate you enter. To see what your actual amortization schedule looks like with a real wholesale rate from First Commerce Financial — call Kirk or Ken. We will give you a rate quote in minutes, with zero junk fees and zero obligation.
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