Buy Now Pay Later Repayment Calculator
Work out your instalment amount and total fees for a buy now pay later purchase, including any late fees if a payment is missed.
Your results
Calculation breakdown
- Instalment
- purchase amount ÷ number of instalments
- Total cost
- purchase amount + account fee + (late fee × missed payments)
Worked example
A $400 purchase split into 4 fortnightly instalments of $100 stays interest-free if paid on time, but missing one payment with a $10 late fee brings the total cost to $410.
Assumptions
- Assumes no interest is charged, matching most mainstream BNPL products.
- Late fee amounts and caps vary by provider; enter the figure from your provider's terms.
- Does not model any effect on your credit file from missed payments.
How this calculator works
Buy now pay later services split a purchase into equal instalments, usually with no interest if paid on time but with late fees if a payment is missed. This calculator shows your instalment amount, the account fee if one applies, and the impact of a missed payment fee on the total cost.
Frequently asked questions
Is buy now pay later the same as a credit card?
No, most BNPL products do not charge ongoing interest, but they can charge late fees and some charge a fixed account fee per purchase; missing payments can also affect your credit file under newer regulation.
What happens if I miss an instalment?
Most providers charge a late fee per missed payment and may pause your account until you catch up, which this calculator adds to the total cost so you can see the real impact.
Does BNPL affect my ability to get a home loan?
It can. Lenders may treat regular BNPL use and outstanding balances as part of your expenses and liabilities when assessing borrowing capacity.
Results are estimates only and are not financial, tax, legal or credit advice.