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The Minimum-Payment Trap, in Actual Numbers
Finance · 6 min read · Last updated September 2026
How the minimum is calculated
Issuers use one of three patterns: a flat floor (₹200–400), a percentage of balance (2–5%), or interest charged + 1% of principal. Whichever applies, the payment is dominated by interest early on — that is the mechanism. Monthly interest at 42% APR ≈ 3.5%/month: on ₹80,000 that is ₹2,800/month before any principal moves.
Worked example — ₹80,000 balance, 42% APR
| Payment strategy | Time to zero | Total interest |
|---|---|---|
| Minimum only (5% of balance, floor ₹400) | ~34 months | ~₹28,000 |
| Fixed ₹6,000/month | ~15 months | ~₹11,000 |
| Fixed ₹8,000/month | ~11 months | ~₹7,500 |
The minimum-payment column shrinks as the balance shrinks — that is the trap: your required payment falls exactly when you could afford to keep it constant. The payoff calculator shows your own numbers; the difference between the rows is not subtle.
The avalanche fix
Order debts by interest rate, pay minimums on everything, and throw every spare rupee at the highest-rate balance — mathematically the cheapest route out. (The snowball method — smallest balance first — costs a bit more interest but wins on motivation; the hybrid is legitimate.) What is not legitimate is the minimum-payment treadmill itself: at high APRs it can stretch a mid-size balance past a decade of payments.
Try the calculators
Worked example: Credit Card Payoff at its default inputs
A worked example is only useful if you can reproduce it. The defaults on Credit Card Payoff give exactly the figures in this section, with no rounding done by us.
| Input | Default |
|---|---|
| Current Balance | 5000 |
| APR (%) | 18 |
| Monthly Payment | 200 |
| Desired Payoff Time (months, for solve modes) | 24 |
Result: Payoff Time: 32 months
The steps behind that answer
- Solving for Payoff Time
- Step 1: Monthly rate = 18%/12 = 1.5000%
- Step 2: N = -log(1 - r×B/P) / log(1+r)
- Step 3: N = -log(1 - 0.015000×5000/200) / log(1.015000)
Sensitivity: Current Balance from half to one-and-a-half times
Current Balance is the first input worth testing, so here it is at three sizes.
| Current Balance | Result |
|---|---|
| 2,500 | Payoff Time: 14 months |
| 5,000 | Payoff Time: 32 months |
| 7,500 | Payoff Time: 56 months |
If the rows barely differ, current balance is not your lever — change a different input. If they swing widely, get that number right before trusting the total.
Related guides
The minimum payment is designed to be slow
Minimum payments are usually a small percentage of the balance, often 1-3%, sometimes with a floor amount. As the balance falls, the minimum falls with it, so the repayment curve flattens and the term stretches.
That is why a balance can take a decade or more to clear at the minimum while the interest keeps compounding. The minimum is a contractual requirement, not a repayment plan.
Interest is charged on the daily balance
Most cards charge interest from the transaction date on purchases once you carry a balance, not from the statement date. The annual rate divided by 365 is applied to each day's balance, which is why paying earlier in the cycle saves more than paying later.
New purchases usually lose their interest-free period while a balance is carried. That detail is the reason a card used for both borrowing and everyday spending becomes expensive quickly.
A workable order of repayment
Highest rate first minimises total interest; smallest balance first maximises the number of closed accounts. Both work, and the better one is the one you will finish.
Then stop adding. A fixed payment with new spending on the same card usually produces a flat balance, which feels like failure even when the maths is working.
Frequently asked questions
How is the minimum payment on a credit card calculated?
Typically the greatest of: a flat floor (₹200–400), a small percentage of the balance (2–5%), or interest plus 1% of principal. Check your card’s terms — the exact formula determines how slowly the balance falls.
What happens if I only pay the minimum?
You stay current (no late fees, no credit-score damage) but principal shrinks slowly, so interest keeps accruing — a mid-size balance at a high APR can take years to clear and cost thousands in interest, as the worked table above shows.
Is it better to pay off one card or pay down all of them?
Pay minimums on all to stay current, then direct extra money to the highest-APR card (avalanche) for the least total interest — or the smallest balance (snowball) if quick wins keep you motivated. Consistency matters more than the starting choice.
Does paying the minimum hurt my credit score?
No — on-time minimum payments keep your payment history clean, which is the biggest score factor. But a high utilization ratio (balance ÷ limit) does drag the score, so paying more than the minimum helps the score too.
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