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# What document do I need to attach to declare a one-off bonus (R/REX/G) received?

If you have received a one-off bonus for previous years (e.g. 2023-2024) and it is considered **extraordinary income** by the tax authorities, you must provide the **following documents**:

* **the annual salary certificate** showing the bonus, identified by the code \*\*R, REX \*\*or **G.**
* **the letter from the tax authorities** confirming that this bonus is subject to the **specific tax regime for extraordinary income.**

This letter is normally provided by your employer. **If you have not received it, you can simply attach a copy of the monthly payslip showing the one-off bonus.**

These documents prove that the bonus has been correctly declared and taxed under the extraordinary income regime (maximum rate 24%).

Here are some examples of these documents:

![](https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/1-57sljlda_jbzhx4.png =500x707)
![](https://storage.crisp.chat/users/helpdesk/website/-/1/c/5/f/1c5fc819171ffd00/2-60niwurh_16mrpy9.png =500x707)