## Zoho Inventory Documentation Index Access the complete documentation index at: https://www.zoho.com/us/inventory/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # What is a default tax and how does it work? The Default Tax will be used in transactions when tax preference (Taxable/Tax Exempt) is not set for the involved customers. The first tax you create will be marked as the **Default Tax** initially. However, you can mark a different sales tax as default as well. Default Tax can be useful for the following scenarios. * When customers are imported into Zoho Inventory, their tax preference is not set. * When these customers are involved in transactions, the **Default Tax** will be applied in those transactions. * The tax preference will also not be set for customers who were created before sales tax was enabled. * Here again, the **Default Tax** will be used in transactions where these customers are involved. > Default Tax is not automatically associated with a customer. It is only used when tax preference (Taxable/Tax Exempt) is not set for the involved customers. You can [set the Tax Preference](/us/inventory/kb/taxes/salestax-default.html#associate-tax-for-a-contact) of a customer at anytime. To mark a different tax as default: * Click the gear icon on the top right corner. * Select **Taxes** from the drop down. * Hover your mouse over the tax to be marked as default. * Click “**Mark as default**” button that becomes available. * Doing this, will update this tax as the default tax. ![Change default tax](/inventory/help/images/sales-tax/sales-tax-default.png)