18% GST Calculator — Add or Remove 18% GST
Calculate 18% GST on your services and goods instantly. See CGST, SGST, and IGST breakdown. Perfect for IT services, freelancers, and consultants.
GST Details
Remove GST: Used when you have the final MRP and want to extract the tax amount from it.
GST Breakdown
Understanding the 18% GST Rate in India
The 18% GST rate is the most common tax slab for professional services in India, including software development, digital marketing, consultancy, and business services. This page is optimized specifically to help you compute 18% GST forward or backward instantly.
1. Adding GST (Exclusive)
Use this when you know the base price and need to add tax to find the final price to charge your client.
GST Amount = Base Price × (GST% / 100)
2. Removing GST (Inclusive)
Use this when you have the final MRP and need to extract the base price and the tax component.
Base Price = MRP / [1 + (GST% / 100)]
What are CGST, SGST, and IGST?
- CGST (Central GST): Collected by the Central Government on an intra-state sale (e.g., selling within Maharashtra).
- SGST (State GST): Collected by the State Government on an intra-state sale. It is exactly half of the total GST rate alongside CGST.
- IGST (Integrated GST): Collected by the Central Government for inter-state sales (e.g., selling from Maharashtra to Karnataka). It equals the full GST rate.
Frequently Asked Questions (FAQ)
How do I calculate GST on my invoice?
To add GST, use the formula: GST Amount = Base Price × (GST Rate ÷ 100). To remove GST from a total MRP to find the base price, use the formula: Base Price = Total Price ÷ (1 + GST Rate ÷ 100).
What is CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are applied on sales within the same state, split equally (e.g., 9% each for an 18% slab). IGST (Integrated GST) is applied on sales between two different states at the full rate (e.g., 18%).
What GST rate applies to IT services and freelancing?
Professional services, including IT development, software design, consulting, and digital marketing, generally attract an 18% GST rate in India under SAC code 998314.