Should you pay off a 9% loan or invest?
Paying off a 9% loan earns you a guaranteed 9% 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: 9% 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.
Reading a 9% payoff as the yield it really is
The clearest way to judge this decision is to treat the payoff as an investment and ask what it yields. Retiring a 9% balance earns a flat 9%, guaranteed, with no default risk and no chance of a down year. To match that after tax with a bond or CD, you would need a taxable yield meaningfully higher than 9%, because interest income is taxed while the loan payoff is not — a dollar of interest you never pay is worth more than a dollar of interest you earn and then share with the IRS.
Framed that way, a 9% guaranteed, tax-free-equivalent return is one almost no safe investment on the market offers. The only asset that reliably beats it is an employer match, which can effectively double the money the day it lands, so fund that to the max first.
After the match, and with an emergency fund in place, a rate this high is hard to argue against paying down. The certainty is the feature here, not a consolation prize.
Common questions
Should I pay off a 9% loan or invest?
At 9%, pay the loan off first. Its guaranteed 9% 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 9% loan is economically identical to earning a guaranteed, tax-free 9% on that money. That's why high-rate debt is one of the best "investments" available.