Buy Now Pay Later Calculator

BNPL total cost comparison: Affirm, Klarna, Afterpay.

Purchase price ($)

Number of installments

Annual interest rate (%)

Late fee per missed ($)

Expected missed payments

Merchant discount rate (%)

Tab to move between fields

Payment per installment

$125.00

≈ 8 movie tickets

Total consumer cost

$500.00

≈ 9 tanks of gas

Effective APR (%)0%

Total interest paid$0.00

Total late fees$0.00

First payment due$125.00

Merchant BNPL fee$29.95

Merchant net revenue$470.05

How to Use This Calculator

Enter Purchase price ($), Number of installments, and Annual interest rate (%).
Set Late fee per missed ($), Expected missed payments, and Merchant discount rate (%).
Review Payment per installment ($) and Total consumer cost ($).
Use Effective APR (%) (%) and Total interest paid ($) to inform your decision.

How the result changes with Purchase price ($)

Purchase price ($): Total price of the item you want to buy.
Number of installments: Number of payments (4 for pay-in-4, or 6-36 for monthly plans).
Annual interest rate (%): APR charged on the installment plan. Pay-in-4 plans are typically 0%. Longer terms may charge 10-36% APR.
Late fee per missed ($): Fee charged per missed or late payment (Afterpay: $8, Klarna: $7, some providers: $0).
Expected missed payments: Number of payments you expect to miss or pay late.
Merchant discount rate (%): Fee the BNPL provider charges the merchant (typically 4-8% of purchase price).

Payment per installment: Amount due each payment period.
Total consumer cost: Total amount paid including purchase price, interest, and any late fees.
Effective APR (%): Annualized true cost of financing including fees — compare to credit card APR.
Total interest paid: Interest charges over the life of the installment plan.
Total late fees: Accumulated late fees from missed payments.
First payment due: Amount due at checkout or within the first billing period.
Merchant BNPL fee: Amount the merchant pays the BNPL provider for offering this payment option.
Merchant net revenue: What the merchant actually receives after the BNPL discount rate.

Identify Input Parameters
4 parameters
Purchase price ($) = 500, Number of installments = 4, Annual interest rate (%) = 0, Late fee per missed ($) = 7 = 6 input(s) provided
Calculate Payment per installment
Payment per installment = purchasePrice / installments
125 = $125
Calculate Total consumer cost
Total consumer cost = purchasePrice + totalInterest + totalLateFees
500 = $500
Calculate Effective APR
0 = 0%
Calculate Total interest paid
Total interest paid
0 = $0