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15-Year vs 30-Year Mortgage Calculator

💡 Direct Answer: On a $320,000 loan ($400,000 home with 20% down), a 15-year mortgage at 5.8% has a monthly P&I payment of $2,666 and total interest of $159,860. A 30-year mortgage at 6.5% has a monthly P&I payment of $2,023 and total interest of $408,142. The 15-year loan costs $643 more per month but saves $248,282 in total interest.

Mortgage Calculator with Amortization Schedule

Calculate your total monthly mortgage payment including principal, interest, taxes, insurance, and PMI with full amortization schedule export.

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Shortens loan term & saves interest

Monthly Payment Breakdown

Total Monthly Payment
$3,165.89

Principal & Interest: $2,665.89 • Taxes: $400 • Insurance: $100

Loan Amount Financed
$320,000
Total Interest Paid
$159,859.47
Total Loan Cost (P+I)
$479,859.47
Payoff Time
15 Years (180 mos)
Loading interactive chart...
Amortization Schedule (15 Years)
Showing first 15 rows
PeriodPaymentPrincipalInterestTotal InterestBalance
Year 1$31,990.68$13,793.52$18,197.16$18,197.16$306,206.48
Year 2$31,990.68$14,615.16$17,375.52$35,572.68$291,591.32
Year 3$31,990.68$15,485.75$16,504.93$52,077.61$276,105.57
Year 4$31,990.68$16,408.19$15,582.49$67,660.1$259,697.38
Year 5$31,990.68$17,385.57$14,605.11$82,265.21$242,311.81
Year 6$31,990.68$18,421.17$13,569.51$95,834.72$223,890.64
Year 7$31,990.68$19,518.48$12,472.2$108,306.92$204,372.16
Year 8$31,990.68$20,681.14$11,309.54$119,616.46$183,691.02
Year 9$31,990.68$21,913.05$10,077.63$129,694.09$161,777.97
Year 10$31,990.68$23,218.32$8,772.36$138,466.45$138,559.65
Year 11$31,990.68$24,601.38$7,389.3$145,855.75$113,958.27
Year 12$31,990.68$26,066.8$5,923.88$151,779.63$87,891.47
Year 13$31,990.68$27,619.51$4,371.17$156,150.8$60,271.96
Year 14$31,990.68$29,264.75$2,725.93$158,876.73$31,007.21
Year 15$31,989.95$31,007.21$982.74$159,859.47$0
National Benchmark Rates

Compare Top Mortgage & Refinance Rates

Estimated monthly principal & interest based on a $320,000 mortgage.

No SSN or Credit Pull Required
Loan ProductInterest RateAPREst. Monthly P&IAction
30-Year Fixed
6.68%6.75%$2,061/moCheck Rates
15-Year Fixed
5.92%6.04%$2,687/moCheck Rates
5/1 Adj. Rate (ARM)
6.18%6.55%$1,956/moCheck Rates
FHA / VA 30-Year
6.15%6.82%$1,950/moCheck Rates

Shop Multiple Lenders

Borrowers who compare 3+ quotes save an average of $84,000 over a 30-year term.

Points vs Zero-Cost

Paying discount points lowers your ongoing interest rate if you plan to stay 5+ years.

PMI Removal Rules

Request private mortgage insurance cancellation as soon as your loan-to-value reaches 80%.

Advertising & Affiliate Disclosure: ConvertSheet is an independent educational calculation service and may receive compensation from partner financial institutions when users click to compare rates. Zero client data or calculated figures are ever shared.

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About 15-Year vs 30-Year Mortgage Calculator

A 15-year fixed loan typically carries a 0.5% to 0.8% lower interest rate than a 30-year mortgage and cuts total interest paid by over 60%. Use this calculator to compare monthly cash flow against long-term interest savings.

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Help & Documentation

Frequently Asked Questions: 15-Year vs 30-Year Mortgage Calculator

Clear mathematical answers to key questions, calculations, and loan parameters.

Should I get a 15-year mortgage or take a 30-year and pay extra?

A 30-year mortgage provides financial safety: if your income drops, you are only committed to the lower monthly payment. You can voluntarily make extra principal payments to pay it off in 15 years with complete flexibility.

How much interest do you save on a 15-year fixed mortgage?

On a $320,000 loan balance, choosing a 15-year term at 5.8% instead of a 30-year term at 6.5% saves approximately $248,282 in total lifetime interest charges.