Nab Credit Card Repayment Calculator

Use our NAB Credit Card Repayment Calculator to determine how much you need to pay each month to clear your credit card balance. This tool helps you understand your interest charges, plan your repayment strategy, and avoid late fees.

How the NAB Credit Card Repayment Calculator Works

The NAB Credit Card Repayment Calculator uses the following inputs to determine your monthly repayment amount:

Current credit card balance
Annual Percentage Rate (APR)
Desired repayment period in months

The calculator applies the APR to your balance and divides the total interest by the number of months to determine your monthly payment. This helps you budget effectively and avoid interest charges.

Note: This calculator assumes you make no additional purchases on your credit card during the repayment period. If you do make purchases, your repayment plan may need adjustment.

Formula Used

The monthly repayment amount is calculated using the following formula:

Monthly Repayment = (Balance × (APR/12)) / (1 - (1 + (APR/12))^-n)

Where:

Balance = Current credit card balance
APR = Annual Percentage Rate (as a decimal)
n = Number of months for repayment

This formula accounts for the interest charged each month and calculates the fixed monthly payment needed to clear the balance within the specified period.

Worked Example

Let's calculate the monthly repayment for a $2,000 balance with a 15% APR over 12 months.

Monthly Repayment = ($2,000 × (0.15/12)) / (1 - (1 + (0.15/12))^-12)

Calculating step-by-step:

Monthly interest rate = 0.15/12 ≈ 0.0125 (1.25%)
Denominator = 1 - (1.0125)^-12 ≈ 1 - 0.8856 ≈ 0.1144
Numerator = $2,000 × 0.0125 = $25
Monthly Repayment = $25 / 0.1144 ≈ $218.48

In this example, you would need to pay approximately $218.48 per month to clear the $2,000 balance in 12 months with a 15% APR.

Month	Starting Balance	Interest	Principal	Ending Balance
1	$2,000.00	$16.67	$201.81	$1,798.19
2	$1,798.19	$14.98	$203.50	$1,594.69
3	$1,594.69	$12.46	$206.02	$1,388.67
4	$1,388.67	$10.74	$208.74	$1,179.93
5	$1,179.93	$9.83	$210.65	$969.28

This table shows the first five months of repayment. The ending balance approaches zero over time, with each payment covering both interest and principal.

Frequently Asked Questions

How accurate is the NAB Credit Card Repayment Calculator?: The calculator provides an estimate based on the inputs you provide. For precise figures, consult your credit card statement or contact NAB directly.
Can I use this calculator for any credit card?: This calculator is designed for NAB credit cards. For other issuers, you may need to adjust the APR or repayment terms.
What if I make extra payments?: Extra payments will reduce your balance faster and may lower the total interest paid. You can use the calculator to see how different payment amounts affect your repayment timeline.
How do I find my APR?: Your APR is typically listed on your credit card statement or can be found in your account online. If you're unsure, contact NAB customer service.