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When more than one discount applies to a single item, Sailia follows specific rules about which can coexist and the order the maths runs in. This page explains both.

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Can codes stack?

Each discount code has a Stackable setting:
  • Stackable — can sit alongside other discounts on the same booking.
  • Non-stackable — if a non-stackable discount is already on the booking, a second one won’t apply.
Only one non-stackable regular discount can be on a booking at a time. If a customer tries to add a second non-stackable code to a booking that already has one, the second is rejected. Membership discounts are always treated as stackable with regular discounts — they run in a separate layer and don’t compete with regular codes.

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Application order

When checkout calculates the total for a booking, discounts are applied in this order:
  1. Membership percentage discounts — taken off the full price first.
  2. Membership fixed discounts — taken off what’s left after step 1.
  3. Regular percentage discounts — taken off what’s left after steps 1–2.
  4. Regular fixed discounts — taken off what’s left after steps 1–3.
Each step reduces the price the next step works from. A 10% membership benefit on a £60 booking gives £6 off, leaving £54 — then a £5 regular fixed discount brings it to £49. The total discount can never exceed the original price — you can’t discount something below £0.

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Entering multiple codes at checkout

A customer can enter several codes if each one passes its own checks. Each code is tested against each booking in the basket — a code might apply to one booking but not another, depending on what it covers and what limits are set.

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Auto-apply and entered codes

Auto-apply discounts attach before the customer types anything. When they then enter a code, the stacking rules still apply — a non-stackable manual code won’t sit alongside a non-stackable auto-apply discount that’s already attached.

Discount code types

Fixed, percentage, tiered, auto-apply, and membership types.

Discount code limits

Add usage, date, and basket conditions to your codes.