Debt Payoff Calculator
Regain control of your finances. This debt payoff calculator estimates the timeline and cumulative interest needed to eliminate revolving balances based on your monthly repayment capacity.
Combined principal balance across cards or loans
Weighted average annual percentage rate (APR)
Total amount committed monthly toward eliminating this debt
Total duration needed to reach a zero balance
How to Use This Calculator
- Sum your total outstanding credit balances and enter in Total Debt.
- Enter your weighted average interest rate across your cards or loans.
- Specify your aggressive monthly payment amount (ensure it exceeds monthly interest accrual).
- Review the exact number of months until you reach complete debt freedom.
Formula & Calculation Methodology
Logarithmic amortization formula solving for the number of periods (N) needed to amortize outstanding principal balance (B) with payment (P) at monthly rate (r).
Worked Example
$18,000 credit debt at 16.9% APR with $600 monthly payment
Frequently Asked Questions
What happens if my payment is lower than monthly interest charges?↓
If your payment is less than or equal to monthly interest, your debt balance will never decrease (negative amortization). In this scenario, lenders add unserviced interest to principal, trapping you in perpetual debt.
What is the Debt Avalanche method vs the Debt Snowball?↓
The Debt Avalanche directs extra payments to the highest interest rate account first, mathematically saving the most money. The Debt Snowball prioritizes the smallest balance first for psychological momentum.
Does balance transfer to a 0% APR card speed up payoff?↓
Yes, transferring high-interest balances to a 0% introductory card allows 100% of your payment to extinguish principal, provided you pay off the balance before the promo period expires.
Should I pause retirement investing while aggressively paying off debt?↓
Always contribute enough to your 401(k) to capture any employer matching funds (instant 100% return). For debt above 7% - 8% APR, directing surplus cash flow toward debt payoff usually outperforms market averages on a risk-adjusted basis.
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Source Citation & Disclaimer
Informational tool only; not licensed tax, legal, or financial advice.