Mortgage Payoff Calculator · Practical guide
Is It Better to Pay Off Your Mortgage or Invest?
Extra payments earn a guaranteed return equal to your rate; investing may earn more — with risk attached.
At a glance
The Short Answer
Every extra dollar toward a 6.5% mortgage earns a guaranteed, risk-free 6.5% return — that is interest you will never pay. A diversified stock portfolio has historically returned more on average, but with market swings and taxes on gains. Neither answer is universal; the right choice depends on your rate, timeline, and stomach for risk.
Interactive tool
Mortgage Payoff Calculator
Enter your own values, then compare the result with the examples below.
Results
| Scenario | Payoff Time | Total Interest | Total Paid |
|---|
The Case for Paying Down the Mortgage
- Guaranteed return with zero volatility — a bird in the hand.
- With today's higher standard deduction, many homeowners no longer itemize, making the effective return fully after-tax.
- On a $280,000 loan at 6.5%, a steady $200 extra per month saves $101,283 in interest and frees you 7 years 4 months early.
The Case for Investing Instead
- Retirement accounts add tax advantages and often an employer match — an instant 50% to 100% return no mortgage can beat.
- If your rate is below 4%, even conservative portfolios have historically out-earned the guaranteed saving.
- Investments stay liquid; home equity does not, and getting it back requires selling or borrowing.
A Sensible Order of Operations
- Capture the full employer 401(k) match.
- Eliminate debt with rates above your mortgage, like credit cards.
- Build a 3–6 month emergency fund.
- Split remaining extra cash between the mortgage and investing.
Run Your Own Numbers
Enter your balance, rate, and payment above to see exactly how much interest a given extra payment saves — then compare that guaranteed figure with what you realistically expect your investments to return.
Frequently Asked Questions
What return do extra mortgage payments really earn?
Exactly your interest rate, risk-free. Extra principal on a 6.5% loan saves 6.5% per year on that amount for the remaining life of the loan.
Does the mortgage interest deduction change the math?
Yes, if you itemize. The deduction lowers the effective return of prepaying to roughly your rate times (1 − your tax bracket). Many households now take the standard deduction and get no benefit.
Should I pay off the mortgage before retirement?
Many advisors favor it because eliminating the payment shrinks the income you need in retirement. Weigh that against keeping enough liquid savings for emergencies.
Is a hybrid approach reasonable?
Yes. Splitting extra cash — say half to principal, half to index funds — captures guaranteed savings while keeping your money growing and accessible.