If you had an extra $1,000 a month, would you pay down your mortgage or invest that money?
Within the financial community, this seems to be one of the most debated topics.
This decision is a crucial one to make, as it could cost, or make you tens to hundreds of thousands of dollars. It can also greatly increase or decrease the financial stress you experience.
Make the wrong decision, and it could take years to recover. Make the right decision, and you’re living on easy street.
In the financial community, I feel as if most would say to follow the math and invest the money, especially if you have a low interest rate. However, it’s not always that simple. There is a very real emotional and stress component to this decision, and math alone can’t account for that.
Let’s break down the pros and cons of each option.
The Case for Paying Your Mortgage Off Early
Emotional Benefits
One of the biggest pros of paying your mortgage off early is the emotional boost you receive. That comes in the form of peace of mind, reduced financial stress, and a true feeling of homeownership.
Without having a large payment going out the door each month, the stress and worry that come with it are no longer there. For anyone who has made the final payment on a car loan, you know that feeling, and it’s even better when it’s your house.
Additionally, the home is 100% yours. No one can come and take it from you (assuming you continue to pay the taxes and insurance), and you are free from liens. You can truly do what you wish with the property.
Financial Benefit
There is also a financial benefit to having a paid-off home. You get a guaranteed “return” in the form of no longer paying interest. If you have a 6% interest rate, you are effectively giving yourself a 6% return by paying it off early.
Secondly, you reduce your monthly cash flow expenses. Instead of having your money leave your bank account to pay principal and interest, you are now able to keep that cash on hand and use it however you want.
Lastly, it protects you against market volatility. As mentioned before, paying off your mortgage gives you a guaranteed return equal to your interest rate. If you were to invest the money instead, some months could yield positive returns while others could be negative, depending on how the market performs.
When Paying Your House Off Early Makes Sense
There are a few situations where going this route makes sense.
First, if you are close to retirement and have a smaller remaining balance, it may be beneficial to pay off your home. Transitioning into retirement and living on a fixed income often makes it less appealing to carry a mortgage payment.
Second, if you have a low risk tolerance and prefer guaranteed outcomes, paying off your mortgage early can provide peace of mind.
Lastly, if you have a high mortgage interest rate, this strategy becomes more attractive. For example, the S&P 500 has historically returned around 10% annually over the long term. If your mortgage rate is 11% (hopefully not), it would be very difficult to consistently beat that return in the market. In that case, paying down your mortgage is the better option. However, if you have a 3% rate, it becomes much easier to outperform that by investing.
The Case for Investing Instead
Higher Potential Returns
As mentioned earlier, if you have a low mortgage rate, you can potentially earn a higher return by investing. Using the previous example, if your mortgage rate is 3% and you earn 10% in the market, you effectively gain a 7% difference by choosing to invest.
Liquidity and Flexibility
Tying your money up in your home is fairly illiquid. If an emergency arises and you need cash quickly, tapping into your home equity can be difficult and time-consuming.
On the other hand, having money invested (especially in more liquid accounts) gives you flexibility. You can access or redirect those funds as needed, whether for opportunities or unexpected expenses.
Inflation Advantage
Over time, your fixed monthly mortgage payment becomes cheaper, especially if your income increases with cost-of-living adjustments.
Additionally, investments that generate returns, such as the historical ~10% return of the S&P 500, tend to outpace inflation over time, helping you build wealth.
When This Makes Sense
This approach makes the most sense when you have a low mortgage interest rate, giving you a wider margin to earn higher returns in the market.
It also works best when you have a long-term investment horizon. The market will go up and down, but the longer your time horizon, the more likely you are to see positive returns.
Lastly, you need to be comfortable with market fluctuations. Unlike paying off your mortgage, investing does not provide guaranteed returns.
The Math: Mortgage Rate vs Investment Returns
For this comparison, I’m going to use my own home loan as an example. I took out a 30-year, $460,000 loan at an interest rate of 5.375%.
If I make the minimum payments over the life of the loan, I will pay approximately $468,000 in interest. However, if I pay an extra $1,000 per month, I would only pay about $227,000 in interest and cut the loan term by nearly 14 years. That’s a significant amount of savings.
On the other hand, if I took that extra $1,000 and invested it, earning a 10% annual return, I would end up with an account balance of approximately $2.2 million. Of that, about $1.8 million would be returns, with roughly $360,000 contributed.
So, in my case, the math clearly shows how powerful investing can be compared to paying off the mortgage early.
However, that is a “perfect scenario,” and it is not guaranteed. You need to run your own numbers and make the decision that works best for your situation.
Hybrid Approach
If you want the best of both worlds, you can take a hybrid approach by splitting your extra money between investing and paying down your mortgage.
Going back to my example, if I put $500 toward extra mortgage payments and invested the other $500 each month, the results would look like this:
On the mortgage side, I would pay about $303,000 in interest and have the house paid off in around 21 years instead of 30.
On the investment side, assuming the same 10% return over 30 years, I would have an account balance of about $1.1 million, with roughly $968,000 in gains.
As you can see, this approach still provides meaningful benefits on both sides.
Key Factors to Consider
While running the numbers is critical, there are several other factors to consider:
- Interest rate on your mortgage vs. expected investment returns
- Retirement savings progress
- Emergency fund status
- Time horizon
- Risk tolerance
- Other debt balances (especially high-interest debt)
Common Mistakes to Avoid
First, prioritizing mortgage payoff over capturing your 401(k) company match. A company match is essentially free money and represents a guaranteed 100% return, which is hard to beat.
Second, not having a fully funded emergency fund. As mentioned earlier, your home is not a liquid asset. If an emergency arises, accessing your equity can be difficult.
Lastly, letting emotions fully drive the decision. While there is a strong emotional benefit to having a paid-off home, the math can sometimes point strongly in the opposite direction. The key is to balance both logic and emotion.
Final Verdict: Which Is Better?
While it would be nice to give a one-size-fits-all answer, that’s simply not possible. Everyone’s situation is different, and you need to weigh the pros and cons carefully.
In my case, the math suggests that investing aggressively may be the better option. However, that doesn’t fully account for the emotional side of the decision.
A general rule of thumb is:
- Lower interest rate → lean toward investing
- Higher interest rate → lean toward paying off your mortgage
Ultimately, the right decision is the one that aligns with your financial goals and personal comfort level.
Call to Action
So what would you do?
Do the numbers make sense for you to invest? Or is the stress of carrying a mortgage enough to make you want to pay it off early?
Run your numbers, weigh your priorities, and choose the path that helps you sleep best at night.
If your looking for more number crunching check out my blog post How to Afford Million Dollar Home.
Sean writes about practical strategies to build wealth and simplify money decisions at Simplifying Personal Finance or on X. He focuses on long-term wealth building, financial goal setting, paying down debt, and couples finances.
