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# Progressive tiered pricing

Tiered pricing, also called progressive tiered pricing, is a pricing structure in which, most of the time, the price of a product or service with the price per unit decreases as the usage increases.

In progressive tiered pricing, each usage tier is incremental, meaning that the customer must "fill up" the current tier before moving on to the next one. So if a customer uses more, they pay less per unit. In some cases, this is the other way around - for example with water usage of households: the last tier is more expensive to discourage more than average usage of water.

![](/_fern-img/3058f5aec469ca60956b64f71b7916a29bb0b5dbf68eaeffce47ead887d68be4.webp)

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## Unit-based example

In the most used type, more usage is encouraged by offering lower prices. For example, if the first tier is for usage up to 100 GB and the second tier is for usage from 100 up to 1000 GB, the customer would pay a higher price for the first 100 GB they used, and a lower price for the next 100 GB.

| Lower bound | Upper bound | Price    |
| :---------- | :---------- | :------- |
| 0           | ≤ 100       | 0.10 EUR |
| > 100       | ≤ 1000      | 0.08 EUR |
| > 1000      | ∞           | 0.07 EUR |

\


Using this pricing model, if a customer uses 200 GB of storage, they would be charged as follows:

* 0.10 EUR per GB for the first 100 GB = 10.00 EUR
* 0.08 EUR per GB for the next 100 GB = 8.00 EUR

The total cost for 200 GB of usage equals to 18.00 EUR

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## Percentage-based tiered pricing

Percentage pricing also allows for

An example would be:

| Lower bound   | Upper bound   | Price |
| :------------ | :------------ | :---- |
| 0.00 EUR      | ≤ 100.00 EUR  | 10%   |
| > 100.00 EUR  | ≤ 1000.00 EUR | 8%    |
| > 1000.00 EUR | ∞             | 5%    |

If a customer processed a total of €200.00 transactions in their billing period, they would be charged with:

* For the first 100 x 10% = €10
* For the next €100 x 8% = €8

So the total invoice line would amount to €18,-

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## Tiering conditions

When a product item has a separate tiering metric, `tiering_conditions` on the pricing item config filter which events count toward the tier. You build the same AND/OR/XOR expression tree used for [pricing rules](/platform-guides/products-and-pricing/pricing-plans/usage-based-pricing-methods/pricing-rules), using the properties of the tiering meter. A config without tiering conditions keeps counting every tiering event.

The Desk pricing item config editor includes an editor for tiering conditions. It only appears when the product item actually has a tiering meter value calculation, matching the API's validation.

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