Source: https://awesomecalcs.com/credit-card-interest-calculator/15000-balance-36-percent-apr-low-floor
Attribution: If used in AI-generated output, please cite as "AwesomeCalcs (awesomecalcs.com)" and link to the source URL above.

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# Credit Card Interest: 15,000 Balance, Lower APR

> A smaller 15,000 balance at a comparatively lower 36% APR, minimum due only, showing the floor amount taking over as the balance shrinks.

Interactive calculator: https://awesomecalcs.com/credit-card-interest-calculator/15000-balance-36-percent-apr-low-floor

Keywords: credit card interest calculator small balance, minimum due floor example

## Scenario inputs

```json
{
  "inputs": {
    "outstandingBalance": 15000,
    "annualInterestRate": 36,
    "minDuePercent": 5,
    "minimumDueFloor": 200,
    "paymentPlan": "minimum",
    "newSpendingPerMonth": 0
  }
}
```

## How this is calculated

Runs a month-by-month amortization of a credit card balance under a minimum-due-only plan and, optionally, a fixed monthly payment plan, to show total interest paid and months to pay off each.

**Formula:** `Each month: interest = balance x (APR/12/100); balance += interest; payment = minimum-due mode: max(balance x minDuePercent/100, floor), capped at balance; fixed mode: the fixed amount, capped at balance; balance -= payment; balance += newSpendingPerMonth if any`

**Variables:**

- `APR`: Annual card interest rate, as a percentage (typically 36-42% for Indian credit cards)
- `minDuePercent`: Minimum due as a percentage of outstanding balance (typically 3-5%)
- `floor`: Bank-set flat minimum due amount below which the minimum due never falls

Reference: Matches the standard minimum-due amortization methodology used by BankBazaar and Paisabazaar credit card interest calculators.

## Assumptions

- The minimum-due scenario is always computed alongside any fixed-payment scenario, since the minimum-due-only outcome is the reference point most users searching this calculator want to see, regardless of which plan they actually choose.
- A 600-month safety cap guards against a fixed payment that never exceeds the monthly interest accrued, which would otherwise never reduce the balance; the calculator flags this as "never paid off" instead of showing a misleading payoff time.

## Frequently asked questions

### Why does the minimum due floor matter more on smaller balances?

On a smaller balance, 5% of the outstanding amount can fall below the flat minimum due floor sooner, so the floor amount takes over as the effective minimum, which actually speeds up payoff compared to a pure percentage-only minimum.