How do I remove 15% GST from an amount?

Divide the gross amount by 1.15. The result is the net amount; the difference between gross and net is the GST portion.

Is GST included in the price in New Zealand?

In New Zealand, consumer prices are displayed GST-inclusive by law, so receipts show the gross amount. B2B invoices typically show net + GST separately.

🇳🇿 New Zealand · GST

GST Calculator for New Zealand — Remove GST from an Amount

Have a GST-inclusive (gross) total and need the net value? This calculator splits any amount back into net, GST and gross at New Zealand's rates.

Amount (NZ$)

GST rate

Result

—

GST amount	—
Net amount (excl. GST)	—
Gross amount (incl. GST)	—

Nothing you type here leaves your browser — there is no backend, no tracking and no account. Reload the page to reset.

How to remove GST manually

Divide the gross amount by 1.15 (the "GST fraction") to get the net amount:

net = gross ÷ 1.15 → GST = gross − net

Example: NZ$1,000 ÷ 1.15 = NZ$869.57 net, so the GST portion is NZ$130.43.

GST rates in New Zealand

Rate	Name	Applies to
15%	Standard	Most goods and services

How do I take GST off a price?

Divide the GST-inclusive amount by 1.15. For example, NZ$1,200 ÷ 1.15 = NZ$1,043.48 net — the rest is GST.

Why is my calculated GST not just 15% of the total?

Because GST is charged on the net amount, not the gross. Taking 15% of the gross overstates the tax. Dividing by 1.15 is the correct backward calculation.