GST Calculator
Calculate GST Inclusive and Exclusive amounts instantly. Supports 5%, 12%, 18%, and 28% tax slabs.
GST Details
Total Payable
Total Amount
₹0.00
Understanding GST Calculation
Good and Services Tax (GST) is a destination-based tax on consumption of goods and services.
Key Formulas:
- GST Amount =
(Original Cost * GST%) / 100 - Net Price =
Original Cost + GST Amount
Reverse Calculation (Inclusive GST):
If you paid ₹118 for a product with 18% GST, what was the real price?
- Formula:
Total / (1 + rate) - Calculation:
118 / 1.18 = 100 - So, Base Price = ₹100, Tax = ₹18.
Our calculator handles both these scenarios instantly. Just toggle between “Exclusive” and “Inclusive” modes.
Frequently Asked Questions
What are the different types of GST?
India has three main components of GST: CGST (Central GST) collected by the Central Govt, SGST (State GST) collected by State Govt, and IGST (Integrated GST) collected by the Centre for inter-state supply.
How to calculate GST Exclusive Amount?
If you have the base amount and need to add GST: GST Amount = (Base Price x GST Rate) / 100. Total Price = Base Price + GST Amount.
How to calculate GST Inclusive Amount?
If the total price already includes GST, use this formula to find the original value: Original Cost = Total Price / (1 + GST Rate/100). The difference is the tax amount.
What are the current GST Slabs?
The primary slabs are 5% (Essentials), 12% (Standard), 18% (Services/Goods), and 28% (Luxury/Sin Goods). Some items like gold (3%) and precious stones (0.25%) have special rates.
Is GST applicable on exports?
Exports are generally treated as 'Zero-Rated Supplies', meaning GST is not charged on goods or services exported out of India.
Can I claim Input Tax Credit (ITC)?
Yes, businesses registered under GST can claim ITC on the tax paid on their purchases, which can be offset against the tax liability on their sales.
Who needs to register for GST?
Businesses with an annual turnover exceeding ₹40 Lakhs (for goods) or ₹20 Lakhs (for services) must mandatory register for GST. Voluntary registration is also possible.
What is HSN Code?
HSN (Harmonized System of Nomenclature) Code is a robust classification system used to classify goods under GST. Every product has a specific HSN code that determines its tax rate.
Does GST apply to old/used goods?
Yes, if a registered business sells used goods (like second-hand cars or furniture), GST is applicable on the margin (Sale Price - Purchase Price).
Is GST charged on free samples?
Generally, giving free samples is considered a supply if Input Tax Credit was claimed on those goods, pushing them into the tax net.