What it means
The standard consumer offer is four payments spread over six weeks, with the first taken at checkout. The shopper pays no interest if instalments are made on time, and the provider earns most of its money from the merchant rather than the customer, though late fees and longer term interest bearing plans also feature.
From the merchant's side the economics are simple to state and easy to get wrong. The provider charges a merchant discount rate typically in the range of 3% to 6% plus a small fixed fee, against roughly 1% to 3% for a card transaction.
The provider usually takes the credit risk, so the merchant is paid in full even if the shopper defaults. The reason retailers accept the higher fee is behavioural.
Splitting a price into four smaller numbers reliably lifts both conversion rates and average order value, particularly in fashion, furniture and electronics, so the extra margin on larger baskets can more than cover the fee. Whether it actually does is an arithmetic question the finance team should answer rather than assume.
There are costs beyond the fee. Return rates tend to be higher on BNPL orders, chargebacks and disputes route through the provider's process rather than the merchant's, and settlement timing differs from card takings, which affects daily cash forecasting.
Regulation is tightening in most major markets, with affordability checks, credit reporting and complaints handling being brought closer to the rules that govern ordinary consumer credit. Merchants should expect provider terms, and possibly fees, to change as those rules land.
In practice
Real-world examples.
Example
An online furniture retailer adds BNPL at checkout and sees average order value rise from $310 to $395. The finance team confirms the extra gross profit exceeds the higher payment fees, but also notes returns on BNPL orders running four percentage points above card orders.
Example
A fashion brand restricts BNPL to orders above $60 because the fixed fee element makes small baskets uneconomic. Below that threshold the provider's flat charge eats a disproportionate share of the margin.
Example
A B2B equipment supplier trials an instalment option for small trade customers who previously asked for 30 day credit accounts. Bad debt falls because the provider carries the risk, and the credit control team's workload drops noticeably.
Think of it
“BNPL is buy now pay later-splitting purchases into easy payment installments.
Formula
Calculation
Net merchant proceeds = order value - (order value x merchant discount rate) - fixed fee. The decision test is whether the extra gross profit from a larger basket exceeds the extra fee.
A homeware retailer sells an item for $200 through a BNPL provider charging 5% plus $0.30. The fee is ($200 x 0.05) + $0.30 = $10.00 + $0.30 = $10.30, so the merchant receives $189.70.
Now compare it with the card alternative. Suppose the average card order is $150 at a fee of 2.5% plus $0.30, which is $3.75 + $0.30 = $4.05, and gross margin before payment fees is 40%. The card order yields ($150 x 0.40) - $4.05 = $60.00 - $4.05 = $55.95, while the BNPL order yields ($200 x 0.40) - $10.30 = $80.00 - $10.30 = $69.70. The BNPL order is $13.75 better despite the higher fee, so the option pays for itself as long as the basket uplift holds.Case study
Seen in the real world.
The following is an illustrative and entirely fictional case. Verity Home, an invented online homeware retailer turning over $9 million, added a BNPL option after competitors did, without modelling the effect.
Twelve months later payment fees had risen by around $180,000 while revenue grew only 6%. The pattern was that existing customers had switched from cards to BNPL for orders they would have placed anyway, so Verity was paying a premium fee for the same sales, and average order value had barely moved because most of the range sat under $80.
Verity's fictional finance director set a $120 minimum order value for the BNPL option and negotiated a lower rate in exchange for a volume commitment. Fees fell by roughly $95,000 a year and, because larger baskets were where the uplift genuinely existed, revenue was unaffected.
Watch out
Common mistakes.
- Adding BNPL because competitors have it, without measuring whether it genuinely lifts basket size or simply shifts existing sales off cheaper card rails.
- Comparing the BNPL fee with the card fee alone, while ignoring higher return rates and different settlement timing.
- Assuming the merchant carries the credit risk, when in the standard model the provider absorbs customer default in exchange for the higher fee.
Questions
People also ask.
Does BNPL cost the customer anything?
Usually nothing if instalments are paid on time, though late fees apply and longer term plans often carry interest.
Should a merchant offer it on low value orders?
Often not, because the fixed fee component makes small baskets unprofitable, which is why minimum order thresholds are common.
How is BNPL recorded in the accounts?
As a sale at full value with the provider fee shown as a cost, and the amount due from the provider treated as a receivable until it settles.
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