## Documentation Index Access the complete documentation index at: https://www.zoho.com/qa/books/kb/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # How do I display my TRN on my invoice? To display your business’s TRN (Tax Registration Number) on invoices or other sales transactions: * Click the **Gear** icon on the top right corner of the page. * Select **Preferences**. * Under General, scroll down to the **Organization Address Format**. * Click **Insert Placeholders**. * Select the tax label that you have set and your **Tax Registration number (TRN)**. * Click **Save**. ![Contact TRN](/ae/books/kb/images/taxes/cont_trn1.png) ![Contact TRN](/ae/books/kb/images/taxes/cont_trn2.png) Now, you will be able to see your TRN on all your sales transactions. * * *