Tax calculators

New Zealand GST Calculator: calculate GST, total, and net amount

New Zealand GST Calculator
Work out GST from GST-included or GST-excluded prices, plus zero-rated and exempt cases.
Advanced mode
Results
Net (GST-exclusive)0,00 NZD
GST amount0,00 NZD
Total (GST-inclusive)0,00 NZD
Effective rate15%
GST included in the amount (tax fraction 3/23).
Rounded to 2 decimals. Receipts can differ due to line-by-line rounding, discounts, or mixed supplies.

Examples

Standard-rated sale (GST excluded)
Amount $1,000.00 → GST $150.00, total $1,150.00.
Retail price (GST included)
Amount $230.00 (inc GST) → GST $30.00, net $200.00.
This calculator works out GST (goods and services tax) in New Zealand at the standard 15% rate, for amounts that exclude GST or already include GST. It also supports common real-life cases: standard-rated (15%), zero-rated (0%), and exempt (no GST) supplies. In New Zealand, retail prices usually include GST unless stated otherwise. Use the GST-included mode to extract the GST portion (tax fraction 3/23), or switch to GST-excluded to add GST on top of a net price. Verified 29 Jan 2026 (Europe/Madrid). Informational estimate only; for legal/accounting outcomes rely on Inland Revenue guidance and your invoice or taxable supply information.

FAQs

Is GST always 15% in New Zealand?

Yes, the standard rate is 15%.

Do shop prices usually include GST already?

Usually yes unless the seller says otherwise; the GST portion is typically shown on receipts.

How do I find the GST part of a GST-included price?

Use GST = Total × 3/23, then round to cents.

When do I have to register for GST?

Generally when taxable turnover is NZ$60,000+ in a rolling 12 months (or expected to be).

If I’m not GST-registered, should I add GST to my prices?

Normally no—you generally charge GST only once registered (with some exceptions and special rules).

What’s the difference between zero-rated and exempt?

Zero-rated is taxable at 0% in specific situations; exempt supplies are not subject to GST (and typically aren’t included in GST returns).

Is residential rent subject to GST?

Residential dwelling rent is exempt—no GST is charged on the rent.

Are financial services subject to GST?

Many financial services are exempt (examples include interest, mortgages/loans, certain bank fees, and currency exchange).

If a GST-registered buyer asks me for records, how fast must I provide them?

For supplies over $200, taxable supply information must be provided within 28 days of request (unless another date is agreed).

Why might my calculated GST differ slightly from an invoice?

Invoices may round line-by-line, apply discounts across items, or split supplies (taxable/zero-rated/exempt).

Commercial accommodation: why does GST change after 4 weeks?

After 4 weeks, GST is charged on 60% of domestic goods/services; some items remain fully taxable.

Note: This calculator provides an estimate. Rates can vary by region and change over time. It is not tax advice.

See more in calculators for New Zealand.

Sources

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