Sales Tax / VAT / GST Calculator: What It Does
Calculates Goods and Services Tax (GST), international VAT, and US sales tax. Supports India rationalized rate slabs (0%, 5%, 18%, 40% plus 0.25%, 1.5%, 3% for precious metals per the 22 Sep 2025 GST Council reform) along with inclusive and exclusive tax modes and CGST/SGST splits.
Example
Amount: 1,000, GST: 18%, ExclusiveGST: 180, Total: 1,180 (CGST: 90, SGST: 90)Calculates 18% tax on base amount and splits equally into central and state tax.
How to Use
- Enter the base price or invoice total.
- Select your tax slab or enter a custom GST percentage.
- Toggle between GST Inclusive (reverse calculation) and GST Exclusive mode.
Limitations
- Cess surcharges applicable on luxury goods must be entered as custom percentages.
- State-specific local trade exemptions are not automatically determined.
Frequently Asked Questions
How is base price extracted from a GST-inclusive amount?
Base Price = Total Amount x [100 / (100 + GST Rate)]. The tax amount is then calculated by subtracting base price from the total.
When does an invoice split into CGST/SGST versus IGST?
Intra-state sales split equally between Central GST (CGST) and State GST (SGST). Inter-state sales apply Integrated GST (IGST) in full.
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