About 28% GST Calculator
The 28% GST slab is the highest standard tax rate in India, levied on luxury goods, automobiles, cement, air conditioners, dishwashers, tobacco, aerated drinks, and gaming/racecourses.
Because 28% represents a significant tax liability, calculating the exact base taxable amount and CGST (14%) + SGST (14%) split is crucial for capital purchases and B2B expense tracking.
Use this calculator to add 28% GST to any base value or reverse-calculate pre-tax rates from 28% GST-inclusive bills.
28% GST Calculation Formula
Adding GST (Exclusive)
28% GST Amount = Base Amount × 0.28Removing GST (Reverse / Inclusive)
Base Amount = Total Price × 100 ÷ 128For local sales, 28% GST splits into 14% CGST and 14% SGST. For interstate sales, 28% IGST applies.
Example: 28% GST on Cement / Automobiles (₹50,000 Base)
A contractor purchases cement and construction machinery for ₹50,000.
Base Amount₹50,000
28% GST Tax₹14,000
CGST (14%) + SGST (14%)₹7,000 + ₹7,000
Total Bill Amount₹64,000
Total bill payable is ₹64,000 including ₹14,000 in 28% GST tax.