1. Insert the tax-controlled UK login billing software, and click the menu item System Settings/Basic Coding Settings/Custom Commodity and Service Coding to open the commodity coding window.

2. In the commodity code window, click the Add Commodity button, enter the name, simplified code, code, tax code, specification, unit price and other information, and then click Submit Now.

3. After adding the goods, find the name of the added goods, and click [Assignment Code] to add a tax code for the goods; Select the category of construction service, and customize and edit the name of the service, such as construction service-project cost/labor cost. Click OK to finish coding.

4. Click Invoice and select VAT electronic invoice.

5. Fill in the drawer's information and the name of the goods, pay attention to modify the payee and reviewer, issue, upload and save.