Should You Pay Off Debt or Invest First?
It's the most common money question there is. The good news: a simple framework answers it for almost everyone.
The core idea: compare the rates
Paying off debt gives you a guaranteed return equal to that debt's interest rate. Investing gives you an uncertain return — historically around 7% a year for stocks, but with big ups and downs. So the question becomes: is your debt's interest rate higher or lower than what you'd realistically earn investing?
A simple priority order
- 1. Get the employer 401(k) match. A 50–100% instant return beats everything. Never skip free money — see the 401(k) calculator.
- 2. Build a starter emergency fund. A small cushion stops new debt when life happens.
- 3. Crush high-interest debt (≈8%+). Credit cards and many personal loans. This is a guaranteed, tax-free return you can't beat reliably — use the debt payoff calculator.
- 4. Invest for the long term. Once expensive debt is gone, channel money into index funds and let it compound.
- 5. Low-interest debt is optional to rush. A 3% mortgage or 4% student loan? Many people invest instead, since expected returns are higher — though paying it down is a valid, low-stress choice too.
An example
Say you have $5,000 extra. Against a 22% credit card, paying it off "earns" you 22% risk-free — clearly the winner. Against a 3.5% mortgage, investing at an expected 7% likely comes out ahead over time. Run both sides: the debt payoff calculator shows interest saved, and the compound interest calculator shows potential investment growth.
Don't forget the human factor
Math isn't everything. If debt keeps you up at night, paying it off faster buys peace of mind that's worth more than a few percentage points. The best plan is the one you'll actually stick to.
Compare for yourself
Compound Interest Calculator
See what investing that money could become instead.
Open calculator →Frequently asked questions
Should I pay off debt or invest first?
Always capture a 401(k) match first. Then clear high-interest debt (roughly above 6–8%) before investing more, since paying it off is a guaranteed return.
What about low-interest debt?
For something like a 3% mortgage, investing the extra often builds more wealth over time — but paying it down is a guaranteed, risk-free return if you value the security.
Can I pay off debt and invest at the same time?
Yes. Many people split their extra cash — enough to make steady debt progress while still investing for the long term.