GST Calculator
Calculate Goods and Services Tax (GST) inclusive or exclusive prices easily.
How to Use the GST Calculator
Our Goods and Services Tax (GST) calculator simplifies calculating taxes for business invoicing, budgeting, or smart shopping. Follow these quick steps:
- Enter Amount: Input the initial monetary value. Depending on the mode selected, this will be the base price or the tax-inclusive price.
- Select Calculation Mode:
- Add GST (GST Exclusive): Calculates the tax to be added on top of your base price.
- Remove GST (GST Inclusive): Calculates the base price and the tax already hidden within your final price.
- Select GST Rate: Click one of our standard presets (5%, 12%, 18%, 28%) or click "Custom" to specify any custom tax rate percentage.
- Choose Transaction Type:
- Intra-State: Used for transactions within the same state. Shows an equal split of Central GST (CGST) and State GST (SGST).
- Inter-State: Used for transactions between different states. Shows the Integrated GST (IGST) at the full tax rate.
- Examine Results: The calculator instantly provides a clear, detailed breakdown along with a visual comparison bar of the tax ratio.
GST Calculations & Formulas
The mathematical operations used to calculate GST depend on whether the initial input is tax-inclusive or tax-exclusive.
1. GST Exclusive Formula (Adding GST)
Example: If the base price of an item is ₹10,000 and the GST is 18%, the GST is ₹1,800. The final total price becomes ₹11,800.
2. GST Inclusive Formula (Removing GST)
Example: If a product's tax-inclusive price is ₹11,800 and the GST rate is 18%, the base amount is ₹11,800 / 1.18 = ₹10,000. The hidden GST amount is ₹1,800.
CGST, SGST, and IGST Explained
In federal tax structures like India's, GST is collected under different components to distribute revenue between central and state governments:
- CGST (Central Goods and Services Tax): Collected by the Central Government on intra-state transactions.
- SGST (State Goods and Services Tax): Collected by the State Government on intra-state transactions. (For Union Territories, this is UTGST).
- IGST (Integrated Goods and Services Tax): Collected by the Central Government on inter-state transactions and imports, and later shared with the destination state.
When you make an intra-state transaction, a standard 18% GST rate is split equally into 9% CGST and 9% SGST. An inter-state transaction carries the full 18% IGST.
Frequently Asked Questions
Sources & References:
- Investopedia - Financial education, formulas, and terminology definitions.
- Standard banking amortization formulas for compound interest and loan schedules.
- Consumer Financial Protection Bureau (CFPB) - Guidelines on credit cards, mortgages, and personal loans.
- Calculations are based on universally accepted financial mathematics; actual rates may vary by institution.