Amortization Calculator
Generate your complete loan amortization schedule — every payment broken down into principal and interest, with running balance.
Monthly Payment
$0
📊 Show Full Amortization Schedule
| Month | Payment | Principal | Interest | Balance |
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📐 Formula
Monthly Payment = P × [r(1+r)^n] / [(1+r)^n − 1]. Monthly Interest = Remaining Balance × Monthly Rate. Monthly Principal = Payment − Interest
Frequently Asked Questions
An amortization schedule shows every payment of a loan broken down into principal (what you owe) and interest. Early payments are mostly interest; later payments are mostly principal. This is called negative amortization risk.
Making extra principal payments reduces your balance faster, which means less interest accrues. On a 30-year mortgage, paying an extra $200/month can cut 5–7 years off the loan and save tens of thousands in interest.
It varies by rate. At 7% APR on a $300,000 30-year mortgage, the first payment of ~$1,996 is about $1,750 interest and only $246 principal. By the final payment, it's almost entirely principal.