David Chen is a Certified Financial Analyst with over 10 years of experience in mortgage planning and debt-reduction strategies, including the Dave Ramsey method.
Use this free mortgage calculator with extra payments Dave Ramsey style to see how additional monthly or one-time payments can slash interest and years off your home loan.
Mortgage Calculator Extra Payments Dave Ramsey
Mortgage Extra Payment Formula
Monthly Payment (P&I):
M = P × [ r(1+r)^n ] / [ (1+r)^n – 1 ]
Interest Saved: Total interest without extra – total interest with extra
Time Saved: Original amortization months – extra-payment amortization months
Formula Sources: Bankrate | Dave Ramsey
Variables
- P (Loan Amount): Initial principal balance of the mortgage.
- r (Monthly Rate): Annual interest rate divided by 12 (decimal).
- n (Total Payments): Loan term in years multiplied by 12.
- Extra Monthly: Additional amount applied to principal every month.
- One-Time Extra: Lump-sum amount applied to principal at specified month.
Related Calculators
- Biweekly Mortgage Calculator
- Mortgage Payoff Goal Calculator
- Refinance Break Even Calculator
- Home Affordability Dave Ramsey Calculator
What Is a Mortgage Extra Payment Dave Ramsey Strategy?
Dave Ramsey advocates paying off your home early by throwing every available dollar at the principal once you’re out of consumer debt. Making extra payments directly reduces principal, slashes total interest, and can eliminate years of payments—turning a 30-year loan into a 15-year or even 10-year mortgage.
Even an extra $200–$500 per month can save tens of thousands in interest and accelerate financial freedom. This calculator shows exactly how much interest and time you’ll save using Dave’s method.
How to Calculate Mortgage Extra Payments (Example)
- Enter your original loan amount, interest rate, and term.
- Add the extra amount you can pay monthly (Ramsey recommends 15-year payment on a 30-year loan).
- Optional: include any one-time bonus or tax refund you’ll put toward principal and the month you’ll apply it.
- Click “Calculate” to see months saved and total interest avoided.
Frequently Asked Questions (FAQ)
Does every extra dollar go to principal? Yes—specify “principal only” when you make the payment.
When is the best time to start extra payments? As early as possible; the first five years of interest are the heaviest.
Can I skip extra payments later? Extra payments are voluntary, but consistency is key to Ramsey’s plan.
Are there prepayment penalties? Most modern mortgages have none, but verify with your servicer.