Scenario Lab

Debt vs investing calculator

Compare a guaranteed debt-paydown return with a hypothetical market return so you can frame the tradeoff before acting.

Reviewed April 4, 2026

Topic hub: Retirement Accounts

Side-by-side lens

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Debt payoff is modeled as a guaranteed interest cost avoided. Investing is modeled as a hypothetical compounded return.

This is a framing tool, not a universal answer. High-interest debt can behave like a guaranteed negative return, while investing outcomes stay uncertain. The right move depends on rate, liquidity, and your ability to stick with either path.

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