Loan Calculator with Interest Breakdown — Year-by-Year in 1 Click

Currency

Loan Amount

Interest Rate (%)

Loan Term (months)

Monthly Payment

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Total Payment

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Total Interest

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Understanding the interest breakdown

Fixed payments split between interest and principal.

Early on you owe more—so more of each payment is interest.

The table shows principal vs interest year by year. Near the end, almost everything is principal.

Interest hits the remaining balance each month.

Example: $25,000 at 7%—month one might be ~$146 interest. By month 36, balance near $12,000 → ~$70 interest.

Extra principal early cuts future interest—that’s why prepayment helps.

Change term and rate to see the split shift.

Longer terms or higher rates mean more total interest. Compare 48 vs 60 months or 6% vs 8%.

What is an amortization schedule?: It’s a table showing each payment (or each year, in our summary) and how much goes to principal vs interest. Lenders provide full schedules; we show a condensed year-by-year view.
Why is more interest paid at the start?: Interest is calculated on the balance you still owe. Early on the balance is large, so interest is large. As you pay down principal, the interest portion of each payment shrinks.
Does this work for any loan type?: Yes—car loans, personal loans, mortgages—any fixed-rate installment loan with equal monthly payments uses this pattern.
Can I see each month’s breakdown?: We show year-by-year to keep the table readable. Your lender’s amortization schedule shows every payment.