Pay Off Mortgage or Invest?
Compare the guaranteed return of paying down your mortgage vs the potential growth of investing.
Simulate Extra Payments →The Core Math
Paying extra on mortgage = guaranteed return equal to your mortgage rate (e.g., 7%). Investing in index funds = historical average ~10%, but with volatility and no guarantee.
$500/month extra over 20 years
| Strategy | Result |
|---|---|
| Pay extra on 7% mortgage | Save ~$186,000, debt-free in 18yr |
| Invest at 10% return | Portfolio ~$380,000 |
| Invest at 7% return | Portfolio ~$260,000 |
* Investment returns not guaranteed. Past performance ≠ future results.
The 7% Rule of Thumb
- Rate above 7% — pay it off. Guaranteed 7%+ risk-free return beats most investments risk-adjusted.
- Rate 5-7% — toss-up. Depends on your risk tolerance.
- Rate below 5% — investing likely wins. Your debt is "cheap."
Factors Beyond the Math
- Peace of mind — being mortgage-free removes your biggest obligation.
- Job security — no mortgage = lower foreclosure risk if income drops.
- Tax deduction — mortgage interest deductible if you itemize (standard deduction is $14,600, so many don't benefit).
- Sequence risk — a market crash early devastates investing returns. Mortgage payoff has no sequence risk.
- 401(k) match first — always get employer match (50-100% instant return) before either option.
The Hybrid Approach
- Max out 401(k) employer match
- Build 3-6 month emergency fund
- Pay off high-interest debt (credit cards)
- Split remaining: 50% mortgage, 50% index funds
Frequently Asked Questions
Should I pay off my mortgage early or invest?
If your rate is above 7%, pay it off. Below 5%, investing likely wins. Between 5-7%, it depends on risk tolerance. Always get your full 401(k) match first.
What is the guaranteed return of paying off my mortgage?
Your guaranteed return equals your mortgage interest rate. A 7% mortgage paid off early gives a risk-free 7% return on every extra dollar.
Should I pay off my mortgage before retirement?
Most advisors say yes. Eliminating a $1,500-2,500/month payment reduces how much you need from retirement savings, making your fund last longer.
Is paying off a 3% mortgage early a waste?
Mathematically, yes — investing the extra likely earns more. But if being debt-free gives peace of mind or job flexibility, the emotional value may outweigh a few percentage points.