If Tax is not being applied to invoices and bills generated through Thread, ensure that you have a default Tax rate configured in Admin Settings.
1. Select the settings tab on the bottom left of your menu.
2. Select General, then Tax Rate.
3. To create a new default Tax rate, click +Tax Rate in the top right corner.
4. A pop-up will appear. Enter the name for the Tax Rate, the percentage you want to apply to bills, and toggle the default button to Yes.
5. To make an existing Tax Rate the default rate, select the rate, click Edit, and toggle the Default button to Yes.
6. Click Save.