Credit Card Calculator

$ {{ format(activeMonthlyPayment) }} / mo $ {{ format(totalInterest) }} interest $ {{ format(totalPaid) }} total paid Min due $ {{ format(estimatedMinimumDueNow) }} {{ monthsToPayoff }} mo {{ primarySavingsBadge }}

{{ issue }}

Current balance:

Example: 8000 for an $8,000 current or statement balance.

Regular APR:

Enter APR as a yearly percent, such as 21.99.

% / yr

Planning mode:

Use payment mode for a budget; target mode for a debt-free date.

Monthly payment:

Example: 240 for a $240 recurring statement payment.

Pay off within:

Enter whole years plus 0-11 months, such as 1 yr 6 mos.

yrs mos

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Extra monthly payment:

Use 0 unless this is a separate, reliable monthly add-on.

Monthly new charges:

Enter average monthly card spending, or 0 for a spending freeze.

One-time lump sum:

Example: 500 for a bonus, refund, or transfer applied once.

Lump-sum month:

Use 1 for the next cycle, 2 for the following cycle, and so on.

month

Intro APR:

Enter 0 for no promo, or a yearly promo rate such as 0 or 4.99.

% / yr

Intro APR period:

Use whole months, such as 12 or 18; set 0 when no promo applies.

months

Minimum due model:

Match your statement style: interest plus percent, or percent of balance only.

Minimum due percent:

Enter the balance percent only, such as 1 or 2.

% of balance

Minimum due floor:

Example: 25 or 35, depending on your card terms.

Metric	Value	Copy
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Signal	Status	Action	Copy
{{ row.signal }}	{{ row.status }}	{{ row.action }}

Target	Required Payment ($)	Total Interest ($)	Finish	Vs Current
Current plan	{{ hasProjection ? format(activeMonthlyPayment) : 'Needs a higher payment' }}	{{ hasProjection ? format(totalInterest) : '—' }}	{{ finishDateLocal \|\| '—' }}	{{ hasProjection ? summaryLine : 'Raise payment above break-even' }}
{{ card.label }}	{{ format(card.monthlyPayment) }}	{{ format(card.totalInterest) }}	{{ card.finishDateLocal \|\| '—' }}	{{ [card.monthsBadgeText, card.interestBadgeText].filter(Boolean).join('; ') \|\| 'No change' }}
Milestone: {{ row.label }}	—	—	{{ row.when }}	Balance $ {{ format(row.balance) }}
Milestones	—	—	Unavailable	Raise the payment above the break-even level to unlock payoff milestones.
{{ row.label }}	{{ format(row.requiredPayment) }}	{{ format(row.totalInterest) }}	{{ row.finishDateLocal \|\| '—' }}	{{ row.deltaLabel }}

Month	APR (% / yr)	Charges ($)	Interest ($)	Principal ($)	Payment ($)	Balance ($)	Copy
{{ row.month }}	{{ formatPercent(row.aprApplied, 2) }}	{{ format(row.charges) }}	{{ format(row.interest) }}	{{ format(row.principal) }}	{{ format(row.payment) }}	{{ format(row.balance) }}

Raise the payment above the break-even amount to generate a month-by-month payoff schedule.

The paydown chart appears after the plan clears the balance or the tool can calculate a valid target-payment projection.

The yearly cost mix chart appears once the tool can build a valid payoff projection.

Add a valid balance and payoff target assumptions to compare monthly commitments across debt-free timelines.

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Carrying a credit card balance turns a payment card into a revolving loan. Unlike a fixed installment loan, the balance can move in both directions: interest is added, payments reduce principal only after interest is covered, and new purchases can push the debt back up before the next statement arrives.

The main payoff question is not just how much is owed today. A useful plan also asks how much of each payment actually reduces principal, whether fresh spending is slowing the plan, and whether a temporary promotional rate ends before the balance is gone. A payment that feels large in a monthly budget can still produce a long timeline when the annual percentage rate (APR) is high or when the payment is close to the minimum due.

Credit card payoff planning questions
Planning question	What changes the answer	Why it matters
How fast will the balance shrink?	APR, monthly payment, and the part of the payment left after interest	A slow first month usually means a slow full payoff unless the payment rises.
Will a promotion clear the debt?	Promotional APR length, regular APR, and balance left at the deadline	Remaining debt can become much more expensive after the low-rate window closes.
Are new purchases undoing progress?	Recurring charges added while the old balance is still unpaid	New spending can consume the same dollars that were meant to reduce principal.
Is the minimum due enough?	Issuer formula, statement balance, interest, fees, and any floor amount	The minimum keeps the account current, but it is not designed to make payoff cheap.

APR is the yearly rate used to price borrowing, but card statements often calculate interest from daily balances and may separate purchases, cash advances, balance transfers, fees, and promotional balances. A payoff estimate usually simplifies that real statement into a smaller planning model. That simplification is useful for comparing choices, but it should not be mistaken for an issuer payoff quote.

Opening balance

Debt carried into the cycle

Charges and credits

Purchases, refunds, and one-time payments

Interest

Cost added to the carried balance

Next balance

Principal left after payment

A revolving balance repeats this cycle until the account is paid off or the payment no longer beats interest and new charges.

Planning is most useful when the assumptions are kept realistic. A spending freeze, a reliable extra payment, or a lump sum can shorten the timeline; a missed payment, a penalty APR, or a balance category with a different rate can make the real statement cost higher than the estimate. Deferred-interest offers need special caution because they are not the same as ordinary low introductory APR periods.

Use payoff results as educational planning estimates, not personal financial advice or a substitute for the payoff amount, due date, and minimum payment shown by the card issuer.

How to Use This Tool:

Start with the statement values you want to model, then choose between testing a known payment and solving for a debt-free target.

Enter Current balance and Regular APR. Use the balance and APR category that match the debt you want to pay off.
Set Planning mode. Choose I know my monthly payment to forecast a timeline, or I need a payment for a target payoff date to solve the required monthly commitment.
In payment mode, enter Monthly payment. In target mode, enter the years and months under Pay off within. A target period must be at least 1 month.
Open Advanced when the plan needs extra detail: Extra monthly payment, Monthly new charges, One-time lump sum, Lump-sum month, Intro APR, Intro APR period, and the minimum-due estimate fields.
Fix any warning before relying on the schedule. A positive balance, a payment above zero, and a target period above zero are required; a payment at or below Break-even payment now will not generate a useful payoff path.
Read Payoff Snapshot Table for the headline numbers, Payoff Guidance for warning cues, Payoff Commitments for target-payment comparisons, and Monthly Paydown Schedule for the month-by-month path.
Use Paydown Horizon Chart, Yearly Cost Mix Chart, and Commitment Curve Chart when you need to compare balances, principal, interest, and target payments visually.

When the result says the payment is too small, increase the total monthly payment or lower monthly new charges before comparing payoff dates.

Interpreting Results:

Projected payoff, Projected finish, Total interest, Total paid, and Interest share describe the cost and length of the current plan. The most important early check is Break-even payment now. If the payment does not exceed first-cycle interest plus new charges, the balance will not shrink under the entered assumptions.

Estimated minimum due now is a planning signal, not an issuer statement amount. Treat it as a floor check. A plan just above the estimated minimum may still be expensive because most of the early payment can go to interest instead of principal.

Payment change means the payment must rise before the balance can shrink reliably.
Savings lever points to a change that reduces time or interest, such as stopping new charges or keeping an extra payment.
APR note shows when a promotional APR materially changes the modeled cost.
Watch flags assumptions that can make the plan weaker, such as missing the promotional window or staying near the minimum due.
Plan note means the projection is internally consistent, but the card statement should still be checked for fees, APR categories, and allocation rules.

Technical Details:

A credit card payoff projection is an amortization estimate for revolving debt. The balance is advanced one month at a time, with any active promotional APR used first and the regular APR used after the promotional month count ends. This monthly model is easier to audit than a daily statement model, but it smooths over daily balance timing, transaction categories, and fees.

Each cycle follows the same order: apply a scheduled lump sum if it lands that month, add recurring new charges, calculate interest from the active APR, then apply the monthly payment. The final payment is reduced if the normal payment would overpay the remaining balance plus that month's interest.

Formula Core

The monthly rate is the active APR divided by 1200 because APR is entered as a yearly percentage and the projection advances in monthly periods.

r_{m} = \frac{{APR}_{m}}{1200}

B_{m}^{*} = \max (0, B_{m - 1} - L_{m}) + C_{m}

I_{m} = round (B_{m}^{*} \times r_{m}, 2)

P_{m} = \min (B_{m}^{*}, A_{m} - I_{m})

B_{m} = \max (0, B_{m}^{*} - P_{m})

Credit card payoff variables
Symbol	Meaning	Visible field or result
B	Balance before or after a modeled month	Current balance and Monthly Paydown Schedule
APR	Annual percentage rate active in the month	Intro APR first, then Regular APR
L	One-time lump sum applied before interest in its selected month	One-time lump sum and Lump-sum month
C	Recurring new charges added each month	Monthly new charges
I	Interest for the month, rounded to cents	Interest ($)
A	Total monthly payment used by the plan	Monthly payment plus Extra monthly payment, or target-mode Monthly commitment
P	Principal reduction after interest is covered	Principal ($)

For example, an $8,000 balance at 21.99% APR has a first monthly interest estimate of $146.60 because $8,000 times 21.99 divided by 1200 equals $146.60. A $240 payment leaves $93.40 for principal in the first month. If $150 in new charges is added each month, the first-cycle break-even amount rises to $296.60 before any principal reduction begins.

Credit card payoff rule and warning logic
Signal	Rule used	How to read it
Break-even payment	First-cycle interest plus monthly new charges	A payment at or below this amount cannot reduce the balance.
Minimum due estimate	Either percent of balance only, or interest plus percent of balance, capped at balance plus interest and floored by the entered dollar floor	The estimate helps flag minimum-payment territory but may differ from the statement.
New-charge warning	Monthly new charges are at least 25% of the planned monthly payment	Fresh spending is consuming a large part of the payment.
Promo warning	The balance is not paid off before the entered intro APR period ends	The remaining balance continues at the regular APR after the window closes.
Payoff cap	Balance remains after 600 modeled months	The plan is treated as longer than 50 years and needs a higher payment.

Target mode solves for a monthly payment by testing payment amounts until the balance clears within the selected month count, then rounding the required payment up to the next cent. The commitment comparison repeats the same solve for 12, 24, 36, and 60 months, plus the selected target and the promotional period when those apply.

Accuracy Notes:

Credit card statements can be more detailed than a monthly payoff model. Many issuers use average daily balance methods, separate balances can carry different APRs, and payment allocation can depend on minimum-payment rules, higher-rate balances, deferred-interest terms, and issuer policies.

Use the issuer's payoff quote for exact payoff timing, interest, and due-date decisions.
Check whether the balance includes purchases, cash advances, balance transfers, fees, or promotional balances with separate APRs.
Deferred-interest promotions can create retroactive interest if the balance is not paid in full by the deadline.
The calculation runs in the browser session and does not require a server-side payoff lookup, but downloaded or copied reports should still be handled like personal financial information.

Worked Examples:

Known payment plan. A $8,000 balance at 21.99% APR with a $240 monthly payment has first-month interest of $146.60. The model pays off in 52 months, or 4 yrs 4 mos, with about $4,473.14 in total interest. Projected payoff and Total interest show the long-term cost, while Break-even payment now explains why the first month reduces principal by only $93.40.

Target payoff plan. A $5,000 balance at 19.99% APR and a 24-month target solves to a Monthly commitment ($) of $254.46. The payoff completes in 2 yrs with about $1,106.87 in interest, and the Payoff Commitments table shows how shorter or longer target dates change the required payment.

Promo window risk. A $3,000 balance at 24.99% regular APR, a 0% intro APR for 12 months, and a $180 payment leaves $840 at the end of the promotional period. The plan still clears in 17 months with about $52.91 in interest, but the warning matters because the last five months are no longer at the intro rate.

No schedule yet. A $3,000 balance at 29.99% APR with a $60 payment and $50 of monthly new charges has a Break-even payment now of $126.22. The schedule stays unavailable until the payment rises or new charges fall enough for principal to shrink.

FAQ:

Why does a schedule not appear?

The schedule appears only when the entered assumptions produce a valid payoff path. Check that Current balance is positive, the payment or target period is valid, and the planned payment beats Break-even payment now.

Why can paying more than the minimum still take years?

A payment can satisfy the estimated minimum due while leaving only a small amount for principal. Compare Interest share, Total interest, and the early rows of Monthly Paydown Schedule to see how much of the payment is being absorbed by interest.

Can I include purchases I will keep making?

Yes. Put expected recurring spending in Monthly new charges. If the warning says new charges use a large share of the planned payment, compare the current plan with the stop-new-charges scenario before trusting the payoff date.

Is intro APR the same as deferred interest?

No. The intro APR fields model a temporary APR that switches to the regular APR after the entered number of months. Deferred-interest offers can charge accumulated interest if the balance is not fully paid by the deadline, so read the card terms directly.

Why might the minimum due estimate differ from my statement?

Issuer formulas vary. Use Minimum due model, Minimum due percent, and Minimum due floor to approximate the statement style, then treat Estimated minimum due now as a warning cue rather than the official amount due.

Glossary:

APR: Annual percentage rate, entered as a yearly percent and converted to a monthly rate for the projection.
Break-even payment: The first-cycle interest plus recurring new charges, before any meaningful principal reduction.
Interest share: Total interest divided by total paid, shown as a percentage of the full payoff cost.
Minimum due: The statement payment required to keep the account current, estimated here from a selected formula.
Principal: The part of a payment that reduces the carried balance after interest is covered.
Promotional APR: A temporary lower rate that applies for a fixed number of months before the regular APR begins.
Payoff cap: The 600-month limit used to stop plans that do not clear within 50 years.

References:

How does my credit card company calculate the amount of interest I owe?, Consumer Financial Protection Bureau, last modified January 22, 2024.
Credit cards key terms, Consumer Financial Protection Bureau.
12 CFR Section 1026.53, Allocation of payments, Consumer Financial Protection Bureau.
The Consumer Credit Card Market Report to Congress, Consumer Financial Protection Bureau, December 2025.