Should You Pay Off Your Mortgage Early? The Numbers Tell the Story
Financial advisors are split on this. Some say invest instead, others say being debt-free is priceless. Here is how to run the actual numbers so you can decide for yourself.
The Scenario
Let us look at a typical case:
Home price: $350,000
Down payment: 20% = $70,000
Loan amount: $280,000 at 6.5% for 30 years
Monthly payment: $1,770 (principal + interest)
Total interest over 30 years: $357,257
You pay more in interest than the original loan amount. That is the motivation for paying early.
Option A: Extra $500/Month Toward Mortgage
Adding $500 to your monthly payment:
- New payoff time: 15 years instead of 30
- Interest saved: $198,000
- Total cost: $280,000 + $159,257 = $439,257
- Debt-free in 15 years — guaranteed return equal to your 6.5% mortgage rate
Option B: Invest the Extra $500/Month Instead
If you keep the 30-year mortgage and invest $500/month at an average 8% annual return:
- After 30 years: $500/month x 360 months at 8% = $745,000
- But you paid: $357,257 extra in mortgage interest
- Net gain vs. paying off early: $745,000 - $357,257 + $198,000 saved = $585,743
Key insight: investing wins on pure numbers
Because 8% market return > 6.5% mortgage rate, investing the difference produces more wealth over 30 years.
When Paying Off Early Makes More Sense
| Factor | Favor Payoff | Favor Invest |
|---|---|---|
| Mortgage rate | > 7% | < 4% |
| Risk tolerance | Low (guaranteed return) | High (market risk) |
| Years left | < 10 years | 20+ years |
| Peace of mind | Debt-free = valuable | Liquidity = valuable |
The Hybrid Approach
You do not have to choose all or nothing. Split the $500:
- $250 extra toward mortgage — saves ~$99,000 in interest
- $250 invested — grows to ~$372,000 in 30 years at 8%
- Compromise: faster payoff AND a growing investment portfolio
Key Takeaways
- On pure math, investing usually wins if your mortgage rate is under 5%
- At high rates (7%+), paying off the mortgage is a guaranteed high return
- Peace of mind is real — being debt-free has emotional value
- Use our Mortgage Calculator to run your own numbers