How to set up sales tax (GCT)
Step 1: Add your tax rates
Go to Settings > Financial > Taxes. Under Add New Tax Rate, enter the Tax Name (for example GCT), the Rate (%) and whether it is Tax Inclusive (already included in your prices), then press Add Tax Rate.
You can also set a Default GCT Rate for the business in Settings > Business.
Step 2: Apply it to products
On each product, choose the Tax Rate on its Basic Info tab (or No Tax). The POS and invoices add it for you.
Step 3: See what you owe
Open Accounting > Tax. Choose the branch and period. Tax & Deductions Liability shows sales tax collected and purchase tax paid; Tax Payments records what you have paid to the tax authority. The Sales Tax Report is under Accounting > Reports.