GST & Sales Tax Invoice Calculator — ZYCalculator

A GST calculator adds or removes Goods and Services Tax from any amount using 5%, 12%, 18%, or 28% slabs with CGST and SGST 50/50 split breakdown.

Formula & Method

Exclusive GST = Amount × Rate / 100 | Inclusive GST = Gross - [ Gross / (1 + Rate/100) ]

How to Use

  1. Choose Add or Remove GST: Select Exclusive (+GST) or Inclusive (-GST) calculation mode.
  2. Enter Amount & Pick Tax Slab: Input amount and pick standard 5%, 12%, 18%, or 28% GST rate.
  3. View CGST & SGST Split: Instantly view net amount, tax component, CGST, SGST, and final gross invoice value.

Frequently Asked Questions

How do I add GST (Exclusive) to a product price?

To add GST: GST Amount = (Base Amount × GST Rate) ÷ 100. Total Final Invoice = Base Amount + GST Amount.

How do I remove GST (Inclusive) from a gross bill?

To remove GST: GST Amount = Gross Amount - [ Gross Amount ÷ (1 + GST Rate / 100) ].