Mortgage Planning

You’ve got a 30-year mortgage at 3.5% with 22 years left. You’re wondering if you should refinance to a 15-year, pay extra every month to knock it out early, or just keep making the minimum payment and invest the difference. Your parents keep telling you to “pay off the house”—they hate debt and think being mortgage-free should be your top priority.

Here’s what most Phoenix homeowners don’t understand: paying off a low-interest mortgage early is often a bad financial move. If you’ve got a 3-4% mortgage (which many people locked in during 2020-2021), you’re borrowing money cheaper than inflation. Paying it off early means giving up the opportunity to invest that money at 7-10% long-term returns.

We help Phoenix homeowners figure out whether paying off their mortgage early makes sense or if that money should go somewhere else. The answer depends on your interest rate, timeline to retirement, risk tolerance, and overall financial plan—not generic advice from someone who bought their house in 1985.

The Math on Early Payoff vs Investing

If your mortgage rate is 3%, and you can reasonably expect 7-8% average returns by investing in a diversified portfolio, you’re better off keeping the mortgage and investing the extra money. Over 20-30 years, that difference compounds into hundreds of thousands of dollars.

Example: You’ve got $1,000/month extra. You could throw it at your 3.5% mortgage or invest it. If you invest it at 7% average returns for 20 years, you’d have about $520,000. If you used it to pay off the mortgage early, you’d save maybe $100,000 in interest and own your home free and clear. Financially, investing wins—but it requires staying invested and not panicking when the market drops.

If your mortgage rate is 6-7% (common for recent buyers), the math changes. Now you’re only earning 1-2% more by investing vs paying off debt, and the risk might not be worth it. Paying extra on a 7% mortgage is a guaranteed 7% return—that’s hard to beat.

When Paying Off the Mortgage Makes Sense

If you’re five years from retirement and you want to enter retirement debt-free, paying off the mortgage might make sense even if the math says invest. Eliminating your largest monthly expense before retiring reduces the amount you need to withdraw from retirement accounts, which can extend how long your money lasts.

If you can’t sleep at night knowing you have debt, pay it off. Financial decisions aren’t just about math—they’re about peace of mind. Some people would rather have a paid-off house and $500,000 in retirement accounts than a mortgage and $700,000 in retirement accounts. That’s a personal choice.

If your income is unstable (self-employed, commission-based, volatile industry), paying off the mortgage reduces your monthly obligations and gives you more flexibility if income drops. That security might be worth more than optimal investment returns.

Refinancing: Does It Still Make Sense?

In 2020-2021, refinancing to a lower rate was a no-brainer—rates dropped to 2.5-3.5%. In 2024-2025, rates are 6-8%, so refinancing probably doesn’t make sense if you already have a low rate. But if you bought recently at 7% and rates drop to 5%, refinancing could save you hundreds per month.

The break-even calculation: divide your refinancing costs by your monthly savings. If it costs $5,000 to refinance and you save $200/month, you break even in 25 months. If you’re planning to stay in the house longer than that, refinancing makes sense. If you’re moving in two years, skip it.

What We Do

We review your mortgage terms, interest rate, remaining balance, and timeline to retirement. We run the math on whether paying extra makes sense or if you’d be better off investing that money. We show you both scenarios with real projections so you can make an informed decision based on your goals and risk tolerance—not generic advice.

The Bottom Line

Paying off a low-interest mortgage early usually costs you money in the long run, but it might make sense for peace of mind or if you’re approaching retirement. Don’t let guilt or outdated advice from older generations pressure you into paying off cheap debt when you could be building more wealth by investing instead.

Wondering if you should pay off your mortgage or invest? Let’s run the numbers and figure out what makes sense.