## Documentation Index Access the complete documentation index at: https://www.zoho.com/uk/books/kb/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # How do I reauthorise Zoho Books with HMRC? The authorisation token generated by Zoho Books for HMRC integration is valid only for a period of eighteen months. To reauthorise your integration: * Go to **Settings** in the top right corner of the page. * Click **VAT Filing Settings** under _VAT Settings_ from the left sidebar. * Choose the option **I want to file my VAT returns to HMRC through Zoho Books**. * Click **Save**. A new pop-up screen will appear that will redirect you to the HMRC portal where you can log in with your credentials and complete the authorisation. * * *