GST Calculator (Add or Remove GST)

How it works

1. 1
   Select add or remove GST

   Choose whether you’re calculating GST on top of a price or extracting GST from a total.

2. 2
   Enter your amount

   Provide the net amount (to add GST) or gross amount (to remove GST).

3. 3
   Enter GST rate

   Type the GST percentage (for example 10% in Australia) or the rate relevant to your region.

4. 4
   View GST breakdown

   Get the GST amount and the net/gross totals instantly.

5. 5
   Use in invoices and reporting

   Copy the values into your invoice totals, receipts, or bookkeeping entries.

Frequently asked questions

• What does GST inclusive mean?

  GST inclusive means the total already includes GST. GST exclusive means GST must be added on top of the base amount.

• Can I calculate GST from a total?

  Yes. Choose remove GST, enter the gross total and the GST rate, and the tool returns the GST portion and net amount.

• Is GST always 10%?

  Not always. Some countries and item categories have different GST rates. Use the rate that applies to your situation.

• Can I use this for receipts and expense claims?

  Yes. It’s useful for extracting GST from receipts and ensuring correct tax reporting.

• Do I need to sign up?

  No. The GST calculator is free and does not require an account.