Discounts and promotions on receipts — who gets the savings when splitting

Splitting a bill is straightforward until a discount appears. Suddenly the line items don’t add up to the amount paid, and the question of who the reduction belongs to has no obvious answer.

Here are the four kinds of discount you’ll actually meet on a receipt, and how each should affect the split.

1. A discount on a specific item

The simplest case. The yoghurt is 4.99 but on promotion at 3.49, and the receipt shows either the reduced price directly or the original price plus a separate RABAT -1,50 line.

Who it belongs to: solely the person who took that product.

This is the only fair answer. The discount attaches to the goods, so it travels with the goods. Spread it across the whole group and the person buying the promotional yoghurt ends up paying more than it actually cost.

Watch out for: when the receipt shows the pre-discount price with a separate reduction line, it’s easy to count the item at its original price. Always check the line items add up to the final amount — if they don’t, there’s a discount you haven’t accounted for.

2. A basket-wide discount

A “£20 off when you spend £150” voucher, a first-order discount, a promo code. The reduction doesn’t attach to any one item, only to the total.

Who it belongs to: everyone, proportionally to how much each person bought.

The logic is the same as with tips. The discount is a function of basket size, and the basket wasn’t equal. If one person bought £120 worth and another £30 worth, the first person did far more to earn the promotional threshold — and should get the larger share of the reduction.

Splitting such a discount evenly sounds fair but in practice means the person with the small basket receives a disproportionately large benefit. At £20 that’s irrelevant. On a £100 voucher, it isn’t.

Exception: if the voucher belonged to one person — their code, their birthday discount — you can agree the reduction is entirely theirs. That’s a matter of agreement rather than arithmetic, but agree it before you split.

3. Buy-two-get-one-free and multibuys

“Third one free”, “second at half price”, “2 for 1”. The receipt usually shows three items and a reduction equal to the price of one of them.

This is where it gets interesting, because the answer depends on who took what.

• One person took all of them — the discount is theirs, case closed.
• The items were spread across several people — the fairest approach is to divide the post-discount total by the number of units and charge each person for what they took. Three yoghurts for £10 instead of £15 works out at £3.33 each, regardless of whose unit was formally the “free” one.

The second situation is more common than you’d think with flatmate shopping. The key is not to treat the “free” unit as somebody’s personal win — the promotion triggered because you bought together.

4. Loyalty cards and points

A reduction applied from one person’s card on shopping done jointly.

The fair approach: split the discount proportionally, as with a basket discount, but the points earned on that transaction stay with the cardholder. The group gets the saving now; the cardholder accrues value for later. That roughly balances out.

Alternatively: the cardholder takes the whole discount and the group divides the list prices. Also defensible — provided everyone knows that’s the arrangement.

What not to do: leave it unstated. Someone else’s loyalty discount is the most ambiguous situation on this list, and the only one where both sides can genuinely believe in good faith that they’re right.

Deposits on bottles and packaging

Worth a separate mention, because formally it isn’t a discount but behaves similarly and can throw the total off.

A deposit charged on returnable bottles is a refundable cost — you get it back when you return the packaging. When splitting, it’s reasonable to assign it to whoever takes the drink, while remembering it isn’t their final expense.

If someone else returns the bottles, it’s fair for the refund to go to whoever paid the deposit — or simply to agree that deposits don’t count, since over a month they even out anyway.

Quick reference

Not doing this by hand

Discounts are precisely the point at which people give up on an accurate split and say “fine, let’s just divide it evenly”. A few negative lines, a few promotional items, and a total that refuses to reconcile — it’s too much work at the checkout.

Paragonix reads discounts along with the rest of the receipt and reflects them in the line items, so the amounts you see when splitting are the prices actually paid. A basket-wide discount can be set as a proportionally split item — it distributes according to each person’s share of the shopping, with any leftover pennies going to the largest total so the sum matches the receipt exactly.

For more on where to find discounts on a receipt and how to check they were applied, see the guide to reading a receipt.