GST Tax in Sales – TruePOS
In TruePOS, GST tax amounts applied to each item in the Sales module are derived based on Item Settings and Tax Master Settings. However, the system also provides flexibility to modify tax settings during billing, depending on configuration.TruePOS supports two types of tax as: 1.Inclusive Tax 2.exclusive Tax 1. Inclusive Tax 
Calculation: Sell Price (without Tax) = (Selling Price * 100) / (Tax% + 100) Tax Amount = Selling Price - Sell Price (without Tax)
2. Exclusive Tax 
Calculation: Tax Amount = Selling Price * (Tax% / 100)
Example: For the item ‘Perlier Chocolate Vanilla Talcum Powder 3.5 OZ’, If the sell price is exclusive of 8.5% tax (Tax Inclusive = No), the tax amount is calculated separately based on the exclusive formula.
Configuring Tax Settings in TruePOS To manage tax behavior: 1. Create or Edit Tax Entries: Go to ->Tools → Configurations → Business Configurations → Outward Section Under the Tax Column List, select one of the following:
Allow to Edit – Allows changing the tax during Sales Quotation, Sales Order, Delivery Note, and Sales Bill. Don't Show – Hides the tax column in the transaction screens. Not Allow to Edit – Shows the tax but does not allow editing.
Applying / Editing Tax During Billing Note: Editing tax is possible only if ‘Allow to Edit’ is selected in configuration. Steps to apply or change Tax: Enter the Item Code (or press ENTER to select from the pop-up). The Item Name, Sell Price, and Tax% will auto-populate. Enter the Quantity and press ENTER. Click on the GST Tax % field to modify the tax.
Press ENTER to view the GST Tax % pop-up. Select the required tax rate and press ENTER. The updated GST Tax Amount will be reflected in the bill.

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