Pay Off the Mortgage or Save for Retirement?

Should you pay off your mortgage as quickly as possible, or use that extra money to build your retirement savings?

There isn't one answer that works for everyone. The decision depends on your mortgage interest rate, expected investment returns, taxes, available retirement accounts, emergency savings, time until retirement, and how comfortable you are carrying debt.

Paying down your mortgage provides a relatively predictable benefit: every dollar of principal you eliminate is a dollar you no longer owe, and you avoid future interest on that portion of the loan. Investing, on the other hand, provides the possibility of a higher long-term return but also involves market risk.

The Example

Let's use a simplified example. Suppose you earn $100,000 per year and have enough cash flow to make a total of $4,000 per month available for either mortgage payments or investing.

Assume you have a $380,000 mortgage at a 4% interest rate with a 25-year amortization. A mortgage of this size would require approximately $2,006 per month in principal and interest payments. The exact payment would vary depending on the loan terms and whether property taxes, insurance, or other costs are included.

Now suppose you have another roughly $2,000 per month available. Should you use that money to make extra mortgage payments, or invest it for retirement?

Option 1: Pay Off the Mortgage Faster

If you apply approximately $4,000 per month to the mortgage instead of the regular payment, the $380,000 loan would be paid off in roughly 9 years and 8 months, assuming a constant 4% interest rate and no additional fees.

Once the mortgage is gone, you would have approximately 15 years remaining in the original 25-year period. You could then redirect the $4,000 monthly cash flow toward retirement savings.

The advantage is that you have eliminated the mortgage debt and can then invest the full amount of your former mortgage payment. You also have a guaranteed financial benefit from avoiding future mortgage interest.

Option 2: Invest the Extra Money

Instead of accelerating the mortgage, you could continue making the regular mortgage payment and invest the additional $2,000 per month.

If the investments earn more than the mortgage's effective after-tax cost over the long term, the investment strategy could produce greater wealth. However, investment returns are not guaranteed, while paying down a fixed-rate mortgage provides a known reduction in interest costs.

For example, investing $2,000 per month for 25 years at a hypothetical 7% annual return, compounded monthly, would produce approximately $1.62 million. This is a mathematical illustration, not a prediction of future investment performance.

The mortgage would also be fully paid off after 25 years, leaving you with the home equity plus the investment account.

Why the Investment Return Matters

The original version of this article suggested that investing becomes better than paying down the mortgage above a particular return such as 7%. In reality, there is no universal break-even percentage.

A useful starting point is to compare your mortgage's effective interest cost with the expected after-tax, risk-adjusted return on your investments.

If your mortgage costs 4% and your investment portfolio earns 7% over the long term, investing may create more wealth mathematically. But the 7% investment return is uncertain, while the interest savings from paying down a 4% mortgage are much more predictable.

The comparison also changes when taxes are involved. A taxable investment account may have a lower after-tax return than its headline investment return. Similarly, the tax treatment of mortgage interest can differ depending on where you live and your circumstances.

Don't Ignore Retirement Account Benefits

Before making extra mortgage payments, consider whether you are giving up an opportunity to receive valuable retirement-account benefits.

For example, an employer-sponsored retirement plan may provide matching contributions. In that situation, contributing enough to receive the available employer match can be an important part of the comparison.

U.S. taxpayers may also receive tax advantages from eligible retirement accounts. Mortgage interest can sometimes be deductible for taxpayers who itemize and meet the applicable requirements, although the deduction is subject to important limitations.

Canadians have a different set of considerations involving accounts such as RRSPs and TFSAs. Because the tax treatment differs by country, the mortgage-versus- investing decision should be evaluated using the rules that apply to you.

When Paying Off the Mortgage Can Make Sense

Paying down the mortgage may become particularly attractive when:

• Your mortgage interest rate is relatively high.
• You are approaching retirement and want to reduce fixed expenses.
• You have already taken advantage of important retirement-account benefits.
• You have a strong emergency fund and do not need the cash for near-term expenses.
• You prefer the certainty of eliminating debt over the uncertainty of investment returns.
• Your investment portfolio is relatively conservative and is unlikely to produce a return substantially above your mortgage cost.

Paying off a mortgage can also improve monthly cash flow. Once the loan is gone, money that previously went toward principal and interest can be redirected toward travel, hobbies, healthcare, gifts, or retirement spending.

When Saving for Retirement May Make More Sense

Continuing to invest rather than making additional mortgage payments may make sense when:

• Your mortgage has a relatively low interest rate.
• You have many years before retirement.
• You have access to valuable employer retirement matching.
• You have unused tax-advantaged retirement savings opportunities.
• You have sufficient emergency savings.
• You are comfortable with investment volatility and have a diversified portfolio.
• You need to maintain liquidity rather than putting additional money into home equity.

Liquidity is an important consideration. Money invested in a retirement account or other investment account may be more accessible than equity locked inside your home. Paying off a mortgage can improve your balance sheet while simultaneously reducing the amount of readily available cash.

What About Paying Off the Mortgage Before Retirement?

For people approaching retirement, the question often changes from "Which strategy produces the highest expected net worth?" to "How do I want my retirement cash flow to look?"

Entering retirement without a mortgage can significantly reduce required monthly income. That can make a retirement plan less dependent on investment withdrawals.

On the other hand, having a mortgage does not automatically mean a retirement plan is unsafe. Someone with substantial investment assets and reliable retirement income may be perfectly capable of carrying a mortgage.

The key is to look at the entire retirement plan rather than evaluating the mortgage in isolation.

The Happiness Factor

There is also a psychological side to the decision.

Some people simply sleep better knowing their home is paid off. Eliminating a mortgage can provide a sense of security and make monthly finances easier to understand.

Others are comfortable carrying a low-rate mortgage because they prefer to keep their money invested and accessible. Neither approach automatically produces the same result for every household.

If paying off the mortgage would make you feel financially secure, that benefit is worth considering alongside the mathematical comparison. Personal finances are not just about maximizing a spreadsheet value.

Don't Forget About Prepayment Rules

Before making a large lump-sum mortgage payment, check your mortgage contract. Depending on the loan, there may be limits on extra payments or a prepayment penalty.

The Consumer Financial Protection Bureau notes that a mortgage payoff amount can differ from the current loan balance and may include accrued interest, fees, and, in some cases, a prepayment penalty.

Your lender can tell you exactly how much you can pay early and whether any restrictions or penalties apply.

Fun Facts

What Does This Mean?

The mortgage-versus-retirement-savings decision isn't simply a contest between a mortgage rate and an investment return.

You should consider your mortgage rate, investment risk, taxes, retirement account opportunities, emergency savings, liquidity needs, and how close you are to retirement.

A useful strategy for many households is to do both: contribute enough to capture important retirement benefits, maintain an adequate emergency fund, and then decide how much additional cash flow should go toward the mortgage versus long-term investments.

Retirementize can help you model the broader retirement picture. Instead of looking only at your mortgage balance, you can consider your investments, retirement income, expenses, taxes, home equity, and other assets together.

Try Retirementize and see how different mortgage and savings decisions could affect your retirement plan.

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