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