What is the monthly payment on a $300,000 15-year mortgage?

At a 6.5% interest rate, the monthly payment on a $300,000 15-year mortgage is $2,613.32. This covers both principal and interest. Your total interest over the life of the loan is $170,398, and your total cost is $470,398. Compared to a 30-year mortgage at 7%, you save $248,129 in interest.

How much higher is a 15-year payment vs a 30-year?

A 15-year mortgage payment is typically 30-40% higher than the equivalent 30-year payment. The exact difference depends on loan size and rate. On a $300,000 loan, the 15-year payment at 6.5% is $2,613 vs $1,996 for 30 years at 7% — about $617 more per month.

Is a 15-year mortgage worth it?

For most homeowners who can comfortably afford the higher payment, yes — the financial case is overwhelming. You save six figures in interest, own your home outright 15 years sooner, and build equity at twice the rate. The main risk is cash flow: if the higher payment strains your budget, the 30-year gives you flexibility.

Can I pay off a 30-year mortgage in 15 years with extra payments?

Yes — this is a popular strategy that combines the payment flexibility of a 30-year with the payoff speed of a 15-year. The key is making extra principal payments every month consistently. The risk: most people don't maintain the discipline over 15 years. A 15-year mortgage enforces it automatically.

What credit score do I need for a 15-year mortgage?

Most lenders require a minimum credit score of 620 for a conventional 15-year mortgage, though you'll get the best rates with a score of 740 or higher. FHA loans can go down to 580 but typically require a 30-year term. A higher credit score directly translates to a lower interest rate.

15-Year Mortgage Calculator

A 15-year mortgage is the fastest conventional path to homeownership — and the most powerful wealth-building tool in residential real estate. The mathematics are straightforward but the impact is dramatic: on a $300,000 loan at 6.5%, you pay $2,613 per month for 15 years, spend $170,398 in total int...

15-YEAR MORTGAGE

Loan Amount

Annual Interest Rate (%) — optional

🔒

Term: 15 Years (fixed)

For a 30-year comparison, use our 15 vs 30 Year Calculator

LIVE DIAGRAM

Enter a loan amount to see your payment breakdown

Created with❤️byeaglecalculator.com

HOW TO USE

1
Enter your Loan Amount — the total amount you plan to borrow.
2
The Interest Rate is pre-filled at 6.5% — a typical 15-year rate. Update with your actual lender quote.
3
Your monthly payment, total interest, and total cost appear instantly.
4
Check the green savings banner to see how much you save in interest vs a 30-year mortgage at 7%.
5
Use the balance curve to see how quickly your loan is paid off compared to a 30-year schedule.

WORKED EXAMPLE

$300,000 loan at 6.5% for 15 years. Monthly rate r = 6.5% / 12 / 100 = 0.005417. Monthly Payment M = $300,000 × 0.005417 × (1.005417)^180 / ((1.005417)^180 - 1) = $2,613.32. Total paid = $2,613.32 × 180 = $470,397.98. Total interest = $470,397.98 - $300,000 = $170,397.98. Compared to a 30-year at 7% ($418,527 interest): you save $248,129 in interest by choosing the 15-year term.

REFERENCE FORMULAS

FORMULA REFERENCE TABLE

NAME	FORMULA	DESCRIPTION
Monthly Payment	M = P × r(1+r)¹⁸⁰ / ((1+r)¹⁸⁰ - 1)	P = loan, r = monthly rate (annual/1200), n = 180 months fixed
Total Interest	Interest = (M × 180) - P	Total interest paid over the full 15-year term
Interest Saved	Saved = 30yr Interest - 15yr Interest	Lifetime savings vs an equivalent 30-year mortgage

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Last updated: April 25, 2026 · Formula verified by EagleCalculator team · Eagle-eyed accuracy for every calculation.