Debt vs Saving: Which First?

You have extra money each month. Should you throw it at debt, or invest it for retirement? This tool compares both paths side‑by‑side over a time horizon.

How this tool works

Enter one representative debt (balance, rate, and minimum payment), an amount you could put toward that debt or invest each month, and an expected investment return and time horizon. The calculator runs two simple scenarios:

Invest Extra – you pay only the minimum on the debt and invest the extra each month.
Pay Debt First – you use the extra to pay down the debt faster; once it’s gone, you invest what you had been paying.

At the end of the horizon, we compare approximate net worth (investments minus any remaining debt) under each strategy to show which one wins on these assumptions.

Your situation

Debt balance

Use your highest‑interest or most representative debt.

Debt interest rate (% per year)

Credit cards are often 15–25%.

Minimum monthly payment

Roughly what you must pay toward this debt each month.

Extra you could put toward debt or investing ($/month)

This is the lever we’ll send either to debt or to investments.

Expected investment return (% per year)

Long‑term stock‑heavy portfolios are often modeled at 6–8%.

Time horizon (years)

How long you’ll keep this plan going.

RonBelisle.com — educational planning illustration. Review the displayed inputs, timing, assumptions and supported statutory scope. Results are estimates, not guaranteed outcomes or personalized advice. Retain scenario inputs with this printout.

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Debt vs Saving: Which First?

How this tool works

Your situation

Debt vs saving comparison

How to read this

🔒 Save and compare payoff vs investing plans