Should you pay off a 12% loan or invest?
Paying off a 12% loan earns you a guaranteed 12% return — no market, no risk. Investing offers a higher expected return (~7% in stocks) but with real risk. So the decision comes down to one comparison: 12% certain vs ~7% risky.
The rule of thumb, and where it breaks
A useful default: pay off any loan above about 6–7% before investing in a taxable brokerage, because few investments reliably beat that after tax and risk. Below that, investing tends to win on average. But the rule bends:
- Guaranteed beats risky. The loan payoff has zero volatility. Getting the same expected return in the market requires taking real risk — a bad decade can wipe out the paper advantage.
- Taxes and match come first. A 401(k) match (~100% instant) and tax-advantaged space usually beat both paying off a moderate loan and taxable investing.
- Behavior and cash flow. Clearing a loan frees up monthly cash and removes a psychological weight — worth a lot even when investing edges ahead on a spreadsheet.
This compares a guaranteed loan rate to a risky ~7% expected return; it isn't tax advice. High-interest debt (credit cards, many personal loans) should almost always be cleared before investing. Model your full picture in the calculator.
Why out-investing a 12% loan is a losing bet
The tempting story is that money left invested will grow fast enough to cover the loan and still come out ahead. At 12%, that story rarely survives contact with the numbers. The loan charges a certain 12% every year; to win, an investment has to clear that same 12% after taxes and do it reliably, not merely on average. Very little short of leverage or a concentrated bet — both of which add real risk of loss — is expected to deliver that.
The asymmetry is the point. Pay the loan and your 12% return is booked and permanent. Chase it in the market and a bad stretch leaves you with both a smaller balance than you hoped and a loan that never paused its interest. You would be taking on risk for the privilege of possibly matching a return you could have locked in for free.
Fund the employer match, hold an emergency cushion, then attack the 12% balance. The market may beat it over thirty years; it is a poor bet to beat it on the schedule a high-rate loan actually runs.
Common questions
Should I pay off a 12% loan or invest?
At 12%, pay the loan off first. Its guaranteed 12% return beats a typical ~7% risky stock return once you adjust for risk, and it frees up cash flow immediately.
What loan interest rate is worth paying off before investing?
A common threshold is about 6–7%. Above it, paying off the loan is a hard-to-beat guaranteed return; below it, investing tends to build more wealth on average. Always clear high-interest debt (credit cards) first.
Does paying off debt count as a return?
Yes — eliminating a 12% loan is economically identical to earning a guaranteed, tax-free 12% on that money. That's why high-rate debt is one of the best "investments" available.