What a tiered discount is
A tiered discount, often also called a volume or multi-buy discount, increases the discount in fixed steps the more units of an item you buy. A typical scale looks like this: 10 percent off from two units, 15 percent from four, 20 percent from six. Each tier applies to the whole order of that item, not just to the extra units above the previous threshold.
That is what sets a tiered discount apart from a promotion like "buy one get one free", where a fixed mechanism applies regardless of how many items are in your basket overall.
Where you typically come across tiered discounts
Tiered discounts turn up most often on items that genuinely make sense in multiples: printer cartridges, batteries, toiletries, pet food, or small parts such as screws and cables. With items like these you will need to buy more sooner or later anyway, so a larger purchase in one go does not put you at a disadvantage, it simply brings the purchase forward.
You see tiered discounts less often on one-off, bigger purchases such as furniture or electronics, because hardly anyone buys several identical pieces at once. When a scale does appear there, it is usually aimed at business buyers or at people shopping for several households at the same time, not at the typical one-off purchase for your own needs.
Why shops give discounts for quantity
For a shop, one larger order per customer is cheaper to handle than several small ones, because shipping and processing only happen once instead of several times. A tiered discount passes part of that saving on to you and at the same time encourages you to buy more in one go rather than ordering again later.
This works particularly well for items that are needed regularly anyway, such as consumables, where a larger quantity is not waste but simply saves you a repeat order later on.
A worked example with batteries
Say a pack of batteries costs 5 euros and the scale offers 10 percent off the total from three packs and 20 percent from six. If you buy three packs, you would normally pay 15 euros, or 13.50 euros with the discount, which is 4.50 euros per pack. If you buy six packs, you would normally pay 30 euros, or 24 euros with 20 percent off, which is 4 euros per pack.
So the second tier lowers the unit price further, but only helps if you actually need the batteries. If you buy six packs when three would have been enough, you end up spending 24 instead of 13.50 euros despite the lower unit price, which means more money for stock that sits in the cupboard longer than planned.
When the cheaper tier still costs you more
The lower unit price of a higher tier always refers to the single unit, not to your total spending. If you go from three to six units just because of the better unit price, you pay more money overall, even though each individual pack was cheaper on paper.
This is only worth it if the extra quantity covers a need you would have had anyway, now or in the foreseeable future. With perishable goods or items that have a use-by or best-before date, this point matters even more, because unused stock brings no benefit in the end, however cheap it was per unit.
When several items fill the tier together
Not every scale applies to a single item. Some shops count all items from a particular category together, whether it is the same product in different colours or completely different items from the same brand. If you put two different shirts and a pair of trousers in your basket, that may already be enough for the "from three units" tier, even though no item appears twice.
That opens the scale up to anyone who wants to buy several different things from one category anyway, not just to people buying a single item in larger quantities. Whether a scale counts across different items is usually stated in the promotion description, and it is worth checking before you put your basket together rather than only noticing at checkout.
How to work out a scale yourself before you buy
- Note down the unit price at each tier of the scale, not just the discount shown as a percentage.
- Compare the total cost at each tier, because a higher tier always means spending more overall.
- Ask yourself honestly whether you will actually use the extra quantity within a reasonable time.
- Check whether the scale applies to the whole basket or only to items from the same category; this is usually set out in the promotion's conditions.
We explain how several discounts can be combined in one order in our article on combining discounts. Whether a bundle deal is really cheaper than buying items separately is covered in the article on bundles. You can find current discount scales and promotions by shop on our shops page, and more about how we check offers on the how it works page.
Frequently asked questions
Does a tiered discount apply automatically once I have enough units in my basket?
With most shops, yes: the discount is adjusted automatically in the basket as soon as you reach the required number of units. You can be sure by checking the total shown just before you pay.
Does a discount scale also count different versions of the same item?
That depends on the shop. Some only count identical items, others let different colours or sizes of the same product count together towards the tier. The condition is usually shown right next to the promotion.
Is a tiered discount always cheaper than a fixed percentage discount?
Not necessarily. A tiered discount is mainly worth it if you would have needed the larger quantity anyway. For smaller orders, a fixed percentage discount with no quantity requirement can be the simpler and cheaper choice.
What happens if I return part of the quantity after buying?
If the remaining quantity falls below the threshold of the tier you used, the refund may be adjusted proportionally. The exact rule depends on the shop, and checking the returns policy before you send anything back makes it clear.
