30-yr fixed 6.43% ▾ 0.06 wk

15-yr fixed 5.79% ▾ 0.04 wk

HELOC avg 7.90% — no change

Auto 60-mo new 6.82% ▴ +0.03 mo

Personal 24-mo 11.57% ▾ 0.12 qtr

Credit card APR 21.52% ▴ +0.09 qtr

as of Jul 2, 2026 · Federal Reserve / Freddie Mac via FRED (St. Louis Fed)

Loan Calculators

Loan & Credit Line Payment

Compare the payment on a loan or credit line as a fully amortizing loan versus interest-only — two very different monthly numbers for the same balance.

Inputs

Loan or line balance

Interest rate

Term (years)

Payment type

Estimates only. Change any value to recalculate instantly.

Amortizing payment $518.96 clears the balance in 5 years

Amortizing payment $518.96

Interest-only payment $187.50

Amortizing total interest $6,138

Monthly difference $331.46

Amortizing payment split

Principal $25k
Interest $6.1k

The amortizing payment of $518.96 clears the balance over 5 years; switching to interest-only would lower it but leave the principal untouched.

Yearly amortization (principal + interest)View table

Year	Principal	Interest	Balance
1	$4,146	$2,082	$20,854
2	$4,535	$1,693	$16,320
3	$4,960	$1,267	$11,360
4	$5,425	$802	$5,934
5	$5,934	$293	$0

How this calculator works

This calculator runs entirely in your browser — nothing you enter is sent anywhere, and there is no sign-up. Change any input and the result, breakdown, and schedule update instantly.

Rate and cost fields are pre-filled with current benchmarks (Federal Reserve / Freddie Mac via FRED (St. Louis Fed)), so your first result is already realistic — replace them with your own quote to see your numbers. To weigh one option against another, use the loan comparison calculator.

Common questions

Is this calculator free, and do I need to sign up?

Yes and no — it is completely free and asks for no account or personal details. Every calculation happens in your browser, so nothing you type is stored or sent to us.

How accurate are the results?

The math is exact for the inputs you give it, but the defaults are national benchmarks — your real rate, fees, taxes, and insurance will differ. Treat the result as a close estimate to refine with a real quote.