Quickly calculate tax, split CGST/SGST or IGST, and get totals for both Inclusive and Exclusive pricing.
A GST calculator is an essential tool for businesses, shoppers, freelancers, accountants, and anyone dealing with invoices or product pricing in India. Our online GST Calculator makes it simple to calculate GST amounts, reverse-calculate GST from an inclusive price, split tax into CGST/SGST for intra-state transactions, calculate IGST for inter-state supply, and compute totals for multiple units instantly. With a clean interface, mobile-friendly design, and instant AJAX-based results, this GST calculator helps you save time and eliminate calculation errors.
Goods and Services Tax (GST) is a single indirect tax applied on the supply of goods and services across India. GST replaced older taxes like VAT, service tax, excise duty, and more to simplify taxation under a unified system. GST is calculated on almost every product or service, making GST calculation extremely important for:
Because GST calculations involve tax splits, rounding, and reverse-calculation, manual calculations can be time-consuming. That’s why a fast and accurate online GST Calculator is highly useful for everyday use.
Using the tool is very easy and requires only a few inputs:
The calculator will instantly show the GST amount, CGST/SGST split, IGST (if applicable), base value, tax value, and the final price.
GST can be calculated in two ways depending on whether the price already includes tax or not. Below is a simple explanation of both methods.
In exclusive GST calculation, the price does not include tax. GST is added separately.
Formula:
GST Amount = Base Price × (GST %)
Final Price = Base Price + GST Amount
Example: If base price is ₹100 and GST rate is 18%, GST = 100 × 0.18 = ₹18 Total = 100 + 18 = ₹118
In inclusive GST calculation, the given price already includes tax. We need to extract the base price.
Formula:
Base Price = Amount ÷ (1 + GST %)
GST Amount = Amount − Base Price
Example: If total price is ₹118 (including 18% GST), Base Price = 118 ÷ 1.18 = ₹100 GST = 118 − 100 = ₹18
Businesses can use the GST calculator to instantly compute GST values, CGST/SGST split, and IGST for items listed in invoices. This improves accuracy and saves time.
If you see a price like ₹118 and want to find the base price at 18% GST, the calculator reverse-calculates GST quickly using the inclusive method.
Compare exclusive vs inclusive rates from multiple suppliers to find the best deal. Helpful for wholesalers, retailers, and online sellers.
Amazon/Flipkart sellers can compute GST for product listings, discounts, offers, and net margins.
Shoppers can use it to check GST on electronics, appliances, furniture, travel expenses, and more.
Unlike generic or outdated calculators, our GST calculator is designed for accuracy and ease of use. It provides:
👉 Try the GST Calculator above and simplify your billing and pricing instantly!
A GST calculator is an online tool used to calculate GST amount, base price, final price, and tax splits like CGST, SGST, and IGST. It simplifies tax calculations for businesses, shoppers, and accountants.
You enter the price and GST rate, choose inclusive or exclusive mode, and the tool automatically calculates tax, base value, and the final amount using predefined formulas.
Exclusive GST means tax is added separately to the base price. Inclusive GST means tax is already included in the given price and must be reverse-calculated.
Our calculator supports 5%, 12%, 18%, 28%, and custom GST rates for all types of goods and services in India.
Yes, the GST calculator automatically applies IGST for inter-state supply when selected.
Absolutely! The calculator is 100% free to use with no sign-up or installation required.
Yes, it is fully responsive and works perfectly on mobile, tablets, and desktops.
Yes, thousands of businesses use GST calculators to generate accurate invoice totals and tax details.