Debt vs. Invest Calculator
Make every spare dollar hustle. Compare guaranteed payoff savings with possible investment growth.
Every spare dollar has to pick a job: destroy debt or grow in the market. Paying down a 14% card is a guaranteed 14% return — the market cannot promise that. But against low-interest debt, investing often wins.
Enter your debt, APR, minimum, the extra you have each month, and a realistic investment return. The calculator runs both paths to the same finish line and shows which leaves you richer — plus the breakeven return where the answer flips.
Remember: investment returns are guesses with taxes and volatility attached. Debt payoff is a sure thing. This tool shows the math; your risk tolerance makes the call.
Home · Debt vs. Invest
Debt vs. invest
Make every spare dollar hustle. Compare guaranteed payoff savings with possible investment growth.
Five numbers
Use your blended debt APR if you have several balances.
Path A · extra to debt
Path B · extra invested
Quick answers
What return should I assume for investments?
Seven percent is a common long-run stock market assumption before inflation, but it is not guaranteed. Try 5–7% and see whether the answer changes — if it does not, your decision is robust.
Why does the calculator favor paying high-APR debt?
Paying debt earns a guaranteed return equal to its APR. A 14% card beats a 7% expected market return on paper — with zero risk and zero volatility.
Does it account for taxes?
No. Investment gains may be taxed while debt-interest savings are effectively tax-free, which actually strengthens the case for paying debt first.
What about my 401(k) match?
Take the match first — that is an instant 100% return nothing beats. This tool is for the dollars after that.