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What a card balance costs to clear

Enter the balance, the rate and what you pay each month. Compoundly builds a month-by-month statement — interest, payment, closing balance — and shows the date it reaches zero.

No accountNo bank connectionYour numbers stay on your device
Paid off
January 2031
52 payments · 4 yr 4 mo
Total interest
€2,798
Total repaid
€7,798

Compared with paying only the minimum

Your payment
January 2031
€2,798 interest
Minimum only
October 2043
€7,014 interest

Statement view

Month 1
Opening
€5,000.00
Interest
+€91.67
Payment
−€150.00
Closing
€4,941.67
Month 2
Opening
€4,941.67
Interest
+€90.60
Payment
−€150.00
Closing
€4,882.27
Month 3
Opening
€4,882.27
Interest
+€89.51
Payment
−€150.00
Closing
€4,821.78

Every line comes from the same engine that draws the chart.

€0€2.0k€4.0k0y5y10y15y
Card balance of €5,000 at 22%.
XYour fixed paymentMinimum payment only
0y€5.0k€5.0k
1y€4.0k€4.2k
3y€2.6k€3.5k
4y€712€2.9k
5y€0€2.4k
7y€0€2.0k
8y€0€1.7k
9y€0€1.4k
10y€0€1.1k
12y€0€956
13y€0€794
14y€0€607
16y€0€358
17y€0€27
Your fixed paymentMinimum payment only

Results are illustrative estimates based on the numbers you enter. Actual investment returns, lender calculations, fees and repayment schedules may differ. Compoundly is not investment, lending, tax or debt advice.

How the card is modelled

Interest is charged on the opening balance at the annual rate divided by the number of statement periods in a year. The payment is then applied, and any new spending is added afterwards. If the payment is smaller than the interest charged, the balance grows and Compoundly says so plainly.

Real cards vary considerably. Many compound daily, apply different rates to purchases, cash advances and balance transfers, and offer interest-free periods on new purchases when the balance is cleared in full. This model applies one rate to the whole balance, which is a simplification — always check your own statement.