Debt Payoff Calculator

Credit cards, personal loans, and other amortizing debts charge monthly interest on the remaining balance. Payment first covers interest (balance × APR ÷ 12), then the remainder reduces principal. Repeat until balance hits zero — or forever if payment does not exceed first-month interest.

Defaults: $5,000 balance at 18% APR with $200/month fixed payment. Monthly interest starts around $75 ($5,000 × 0.18 ÷ 12), leaving ~$125 toward principal month one. As balance falls, interest shrinks and more of each $200 attacks principal — payoff lands near 32 months with roughly $1,300 total interest (estimate).

Credit card statements show minimums as a small percent of balance plus fees — paying only the minimum stretches payoff years and multiplies interest. Enter the fixed payment you realistically commit to each month, not the minimum unless that is truly your plan.

Daily balance versus average daily balance methods, promotional 0% windows, and late fees can shift real statements slightly from this model. Use results for timeline planning, not penny-matching your issuer's software.

Common mistakes include using promotional APR after it expires without recalculating, forgetting that new purchases add balance if you keep charging, and assuming APR equals APY on loans where fees are financed separately.

If payment ≤ monthly interest, balance never falls — the tool reports payoff is not possible. That is a red flag to raise payment, negotiate rate, or seek qualified debt counseling — not a bug.

Balance transfer offers at 0% APR reset the clock — enter the promo rate and plan payoff before revert date; when promo ends, rerun with the higher standard APR.

Debt consolidation loans replace multiple payments with one — this single-debt form models one balance after consolidation, not the pre-merge list.

Avalanche versus snowball on a single debt is moot — strategy matters when you have multiple balances; here extra payment is fixed and order is irrelevant.

Student loan income-driven plans cap payment at a percent of discretionary income — if your IDR payment is below accruing interest, balance may grow despite payments; this fixed-payoff model assumes amortizing down.

Paying more than the fixed payment field models accelerated payoff — enter the total you will actually send each month, not the minimum if you pay extra consistently.

Chapter 7 or 13 bankruptcy changes legal liability — this calculator does not model discharge or restructuring; use for standard amortizing debt only.

Round up payment to the nearest $10 for cleaner budgeting — $200 versus $197 changes payoff months slightly but simplifies autopay setup.

Autopay discounts on some student loans reduce APR slightly — enter effective APR after discount if your servicer offers one.

Compare payoff months to snowball on multiple cards only after modeling each card separately — this is single-balance focus.

Avalanche on this same balance with the same payment is identical to snowball — strategy tools matter when you hold multiple debts.

Set calendar reminder when payoff month estimate arrives — autopay prevents missing the final payment on small remaining cents.

Zero-percent promotional APR ends — schedule a reminder to rerun with the go-to rate before the promo expires and interest accelerates.

Debt consolidation at lower APR reduces interest but may extend term — compare total interest here before consolidating.

Minimum payment on cards drops as balance falls — if you keep paying the starting fixed amount, effective extra rises automatically each month.

Hardship forbearance pauses payments but interest may still accrue — balances can grow during pause; this model assumes continuous paying months.

Paying biweekly half-payments on a mortgage is a different schedule — credit card fixed payments here assume once monthly.

Settlement offers for less than full balance are not modeled — paying less than owed with creditor approval closes debt differently than full amortization.

Use the payoff month estimate to set a target date on your calendar — visible deadlines help maintain fixed payment discipline.

Limits: single debt, fixed payment, fixed APR. No variable rates, skip-a-pay programs, or extra lump sums. Planning math only — not financial or tax advice.