> For the complete documentation index, see [llms.txt](https://docs.surgecardano.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.surgecardano.com/fees-tiers-and-staking/surge-fee-and-minimum.md).

# Surge fee and minimum

The Surge fee is **0.2% of the ADA side of every order**, reduced by your staking tier. The minimum fee is **0.978 ADA** per order.

### How it is calculated

* **Buy (ADA → token):** 0.2% of the ADA you trade.
* **Sell (token → ADA):** 0.2% of the ADA you expect to receive.
* Your staking tier reduces the base rate. See [Tiers and fee discounts](/fees-tiers-and-staking/tiers-and-discounts.md).
* Surge charges the larger of the percentage fee or 0.978 ADA.

### Why the minimum is 0.978 ADA

Cardano requires each transaction output to meet its minimum value. Surge uses **0.978 ADA** as the minimum fee so the fee output meets that requirement.

| Trade size | Percentage fee | Surge fee |
| ---------- | -------------- | --------- |
| 1,000 ADA  | 2.00 ADA       | 2.00 ADA  |
| 489 ADA    | 0.978 ADA      | 0.978 ADA |
| 100 ADA    | 0.20 ADA       | 0.978 ADA |
| 20 ADA     | 0.04 ADA       | 0.978 ADA |

The minimum applies to fee previews, required-balance panels, trade records, and analytics.

### When your rate changes

Your rate is set when you create your account. If you subscribe to staking, Surge recalculates it every six hours from your staking snapshot. A tier change applies at the next snapshot.


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