---
title: UTR and Auth Codes | After Company Registration
description: Find and manage your company’s tax and Companies House codes.
---

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1. [After Company Registration](https://help.rapidformations.co.uk/after-company-registration)
2. [UTR and Auth Codes](https://help.rapidformations.co.uk/after-company-registration/utr-and-auth-codes)

# UTR and Auth Codes

 Find and manage your company’s tax and Companies House codes.

- [Company Authentication Code](https://help.rapidformations.co.uk/after-company-registration/authentication-code-utr-number)
- [Unique Taxpayer Reference (UTR) Number](https://help.rapidformations.co.uk/after-company-registration/unique-taxpayer-reference-utr-number)

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- [UTR and Auth Codes](https://help.rapidformations.co.uk/after-company-registration/utr-and-auth-codes)
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