Add GST
Calculate tax and gross total from a taxable value.
Free · Money & business · No account needed
GST calculator
Add GST to a net price or remove included GST from a total. Enter the rate that applies to your supply.
No account needed. Nothing is saved automatically.
Your inputs
Starting values are examples, not recommended rates.
Your estimate
- Net amount
- 1,000USD
- GST
- 180USD
- Total including GST
- 1,180USD
- CGST (if intra-state)
- 90USD
- SGST (if intra-state)
- 90USD
This calculates a rate you enter, not the legally applicable rate. Cess, reverse charge, exemptions and place-of-supply rules are not determined here.
How this tool works
Exclusive: tax = net × rate / 100. Inclusive: net = total / (1 + rate / 100). Equal CGST/SGST halves are an illustration for intra-state supplies only.
What should I check before using the result?
This calculates a rate you enter, not the legally applicable rate. Cess, reverse charge, exemptions and place-of-supply rules are not determined here.
GST invoice validation guidanceDo free tools require an account?
No. Public UtilityHub tools open without an account. An account is required only when you want a workspace to save records, collaborate with a team or use paid product features.
Are the public tools really free?
Yes. The tools listed in the public tools directory are free to use. They do not start a subscription and do not ask for a card.
Are my files uploaded to UtilityHub?
Image and PDF pages state how each tool processes files. Where a page says browser processing, the work happens on your device. Always check the privacy note on the specific tool before adding a sensitive file.
Should I verify a downloaded result?
Yes. Open every downloaded file and confirm its dimensions, size, legibility and destination requirements. UtilityHub helps prepare a result but cannot verify the current rules of every external form or service.
Your work stays in this session
Nothing is added to your business workspace unless you choose to continue there.
Review the method
Exclusive: tax = net × rate / 100. Inclusive: net = total / (1 + rate / 100). Equal CGST/SGST halves are an illustration for intra-state supplies only.
Check before using the result
This calculates a rate you enter, not the legally applicable rate. Cess, reverse charge, exemptions and place-of-supply rules are not determined here.
Practical guidance
Use the result with confidence
This calculator applies the rate you enter; it does not determine which GST rate, place-of-supply treatment, exemption, cess or reverse-charge rule applies. Use it to check arithmetic after confirming the legal inputs.
Before you finish
- Inclusive and exclusive mode match the source amount.
- The chosen rate is legally applicable.
- Rounding matches the final accounting document.
Original process diagram
GST calculation flow
1Enter taxable value
2Apply stated rate
3Separate tax and total
Evidence and accountability
- Written by
- UtilityHub Product Team
- Reviewed by
- Calculation Review
- Last reviewed
- 2026-09-20
- Method guide
- Open related guide
Reproducible worked example
The same GST amount, added and removed
Use the exclusive method to add an entered 18% rate to ₹1,000, then use the inclusive method to recover the taxable value from ₹1,180.
Example inputs
- Exclusive amount
- ₹1,000
- Inclusive amount
- ₹1,180
- Entered GST rate
- 18%
Replace these example values in the calculator or generator to reproduce the result.
Calculation
- Add GST: ₹1,000 × 18% = ₹180
- Gross total: ₹1,000 + ₹180 = ₹1,180
- Remove GST: ₹1,180 ÷ 1.18 = ₹1,000
- Taxable value
- ₹1,000
- GST amount
- ₹180
What this shows: inclusive GST is removed by division, not by subtracting 18% from the gross amount.
Assumptions
- The full amount uses one verified 18% GST rate.
- Values are shown before document-level rounding adjustments.
Limits of the result
- The example does not select the correct rate or tax type.
- Place of supply, cess, exemptions and reverse charge are outside this calculation.
Common uses
Remove inclusive GST
Separate the taxable value and tax from an inclusive total.
Quotation checks
Verify the arithmetic used in a quotation or invoice.
Recommended workflow
- 1Confirm whether the entered amount includes or excludes GST.
- 2Enter the verified rate for the supply.
- 3Review taxable value, tax and gross total.
- 4Copy the result into the document only after checking applicable rules.
Questions
Does the calculator choose a GST rate?
No. You must enter and verify the applicable rate.
Can it determine CGST, SGST or IGST?
It can illustrate a split, but it does not determine place of supply or which tax type legally applies.
Can I use the result for filing?
Use it as an arithmetic check only and reconcile the final figures with your accounting records and professional advice where needed.