$10,000 loan at 4% over 10 years
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About This Loan Calculation
Before you sign for a $10,000 loan at 4%, here's the one number that actually matters. Your monthly repayment is $101.25. That covers both principal and interest — but the split changes every month. Over 120 payments you'll repay $12,149.42 in total. That's $2,149.42 more than the original loan amount. Even a 0.5% rate reduction could save you hundreds. Small differences in rate make a bigger impact the longer the term. The amortization formula banks use front-loads your interest payments. Your first payment barely dents the principal. Knowing the total interest cost — not just the monthly payment — is the single most powerful thing you can do before taking out any loan.