Credit card debt: how long will it take to pay off?
Payoff time is not determined by balance alone. APR, the issuer’s minimum-payment rule, payment timing, new spending and every fixed extra payment change how quickly principal falls.
A $5,000 balance can take 21 months or almost 19 years
Consider a United States-labelled illustration: a $5,000 credit card balance at a constant 24% annual percentage rate (APR), with no fees or new charges. Under a modelled minimum of 3% of the statement balance or $25, whichever is greater, payoff takes 224 months and modelled interest totals $8,414.02. A fixed $200 payment takes 36 months and $2,000.57 of interest. A fixed $300 payment takes 21 months and $1,143.33 of interest.
Those figures are calculated examples, not account quotes. Many issuers accrue interest daily, may separate balances by APR, and use minimum formulas involving percentages, interest, fees, past-due amounts or fixed floors. Read the agreement and current statement. The useful principle is that a payment which stays fixed usually sends more dollars to principal than a minimum that shrinks with the balance.
Five inputs control the payoff timeline
Balance is the amount that must be repaid. At the same APR and payment, a larger balance creates more interest in the first cycle and generally needs more cycles. APR is the annualised price of borrowing. In a simplified monthly model, 24% APR becomes 2% per month; $5,000 therefore creates $100 of first-month interest before a payment. Real cards commonly use a daily periodic rate and average daily balance, so transaction and payment dates can change the statement charge.
The minimum-payment rule determines the required amount, not a universal repayment schedule. One issuer may use a percentage of balance with a dollar floor; another may use a percentage of principal plus interest and fees. Promotional plans, arrears and over-limit amounts can add separate requirements. Never assume the 3%-or-$25 rule below describes every card. Use it only to make the shrinking-payment effect visible.
New spending pushes the finish line away. It raises principal and may start accruing interest immediately when a grace period is unavailable. A fixed extra payment works in the opposite direction: after current interest is covered, the remainder reduces principal, so the next cycle starts from a smaller balance. Consistency matters because a planned extra amount that is repeatedly replaced by fresh charges does not produce the modelled timeline.
Repeat one cycle until the balance reaches zero
Closing balance = opening balance + interest + new charges − payment
- Opening balance is the prior cycle’s modelled closing balance.
- Interest is rounded to cents in this illustration.
- New charges include purchases, fees or other additions included in the model.
- Payment is capped at the amount needed to bring the balance to zero.
This monthly approximation is transparent but not a reconstruction of any issuer’s daily-balance system. For an account-specific estimate, use the APR, balance categories, minimum due, fees and timing shown on the statement.
This repeated calculation is amortization: each payment covers interest first in the simplified single-balance view, and what remains reduces principal. With a $200 first payment, $100 covers modelled interest and $100 reduces principal. Month two opens at $4,900, so interest falls to $98 and $102 reaches principal. The principal portion grows while the fixed payment stays level.
First two months of the fixed $200 path
Inputs
- Jurisdiction label: United States; dollars are illustrative
- Opening balance: $5,000
- Constant APR: 24%; simplified monthly rate: 24% ÷ 12 = 2%
- Payment: $200 at the end of each modelled month
- No new spending, fees, missed payments or APR changes
Calculation
Month 1 interest is $100.00. Month 2 interest is $4,900 × 2% = $98.00, so the second closing balance is $4,900 + $98 − $200 = $4,798. Across 36 repeated cycles, rounded monthly interest totals $2,000.57; the last payment is smaller than $200.
Result
36 months to modelled payoffThe result depends on every stated assumption. Daily accrual, variable rates, fees, payment dates and new transactions will change a real account’s figures.
Minimum-only, base and extra-payment paths
Minimum only
224 months / $8,414.02 interestPays 3% of balance after modelled interest or $25, whichever is greater. The payment falls as the balance falls.
$200 each month
36 months / $2,000.57 interestKeeps the scheduled amount level until the smaller final payment.
$300 each month
21 months / $1,143.33 interestAdds $100 to the base payment and applies it throughout the model.
What the comparison shows: Against this particular minimum-only model, $200 finishes 188 months sooner and models $6,413.45 less interest. Raising the fixed payment from $200 to $300 saves another 15 months and $857.24. These differences are arithmetic under fixed assumptions, not promised savings.
How the balance changes under each payment rule
| Payment path | After 12 months | After 24 months | Payoff time | Total interest |
|---|---|---|---|---|
| Minimum only: 3% or $25 | $4,399.79 | $3,871.64 | 224 months | $8,414.02 |
| $200 fixed | $3,658.78 | $1,957.81 | 36 months | $2,000.57 |
| $300 fixed | $2,317.58 | $0 | 21 months | $1,143.33 |
Interest is added monthly at 2%, rounded to cents, before the end-of-month payment. The minimum is recalculated as 3% of the post-interest balance or $25. A real issuer may calculate both interest and minimum due differently.
New spending changes both the numerator and the habit
A payoff estimate normally assumes no new charges. If $100 is paid above interest but $80 of purchases is added in the same modelled cycle, principal falls by only $20 before any timing differences. Repeating that pattern can turn an apparent fixed-payment plan into a much slower one. A charge can also attract a different APR, a fee or no grace period. The CFPB notes that for most US cards, carrying a balance can cause new purchases to accrue interest from the transaction date, including when another balance has a 0% transfer rate.
Separate ongoing spending from the payoff card where practical, remove stored-card temptation and compare each statement balance with the planned path. If the balance rises, identify whether the cause was interest, a fee, a necessary charge or discretionary spending before revising the estimate. Do not hide required living costs to make a debt plan look faster; a sustainable payment is more useful than a target that causes missed essentials.
A balance transfer changes inputs, not the debt
A lower promotional APR can reduce interest, but include the transfer fee, amount that can actually be transferred, promotional end date, post-promotion APR and required minimum. A 0% offer may still charge a transfer fee. Model the fee as added debt unless it is paid separately, and split the timeline at the promotion end rather than extending 0% indefinitely. Avoid assuming new purchases share the promotional treatment.
Use the Balance Transfer Calculator beside the Debt Payoff Planner. Keep paying the original issuer until the transfer is confirmed, follow both agreements, and compare total cost rather than APR alone. Approval, credit limit and the offered terms are never guaranteed.
Build a payoff estimate you can audit
- Record each balance category, APR, statement balance, minimum due, due date and current fees.
- Copy the issuer’s minimum-payment wording; do not substitute a generic percentage.
- Choose a payment that leaves essential bills and a modest cash buffer workable.
- Stop or separately budget new card spending included outside the model.
- Run minimum-only, realistic fixed-payment and fixed-extra scenarios.
- Check the first two cycles by hand so the interest and payment order are clear.
- Schedule payments on time and verify how they appeared on the next statement.
- Recalculate after a rate change, fee, missed payment, transfer or new purchase.
- Contact the issuer early if the minimum is becoming unaffordable.
Common mistakes to avoid
- Treating APR ÷ 12 as the issuer’s exact method: many US cards accrue interest daily.
- Using one minimum formula for every card: agreements differ and can include interest, fees and past-due amounts.
- Keeping the minimum payment fixed in a model: a percentage-based minimum usually shrinks unless a floor applies.
- Ignoring new charges: purchases can erase principal progress and may lose grace-period treatment.
- Comparing APRs without transfer fees: evaluate total cost through and after the promotional period.
- Promising a payoff date: estimates change when rates, timing, terms or behaviour change.
- Paying debt ahead of essentials: if minimums are unaffordable, seek issuer hardship information or reputable local help.
Sources and methodology
Sources checked 8 September 2026. Links open the referenced primary or authoritative material.
- Consumer Financial Protection Bureau — How credit card interest is calculated — US guidance on daily periodic rates, average daily balances and multiple APR categories
- Consumer Financial Protection Bureau — Regulation Z periodic-statement rules — US minimum-payment warning and repayment-estimate disclosure requirements
- Consumer Financial Protection Bureau — Balance transfer fees — confirms that a fee may apply to a 0% offer
- Consumer Financial Protection Bureau — New purchases after a balance transfer — US grace-period and purchase-interest caution
- Federal Trade Commission — How to get out of debt — US consumer guidance on contacting creditors and evaluating debt help