New Zealand Online GST calculator
This New Zealand GST calculator helps you add, remove, or reverse-calculate 15% GST instantly. It works for GST-inclusive prices, GST-exclusive amounts, refunds, and invoices.
GST Calculator NZ ๐ณ๐ฟ

GST Calculation Formulas
โ Add GST (15%)
Formula:
GST = Amount ร 15%
Total = Amount ร 1.15
โ Remove GST
Formula:
GST = Total ร (15 รท 115)
Net = Total รท 1.15
๐ Reverse GST
Formula:
Original Price = GST-inclusive price รท 1.15
Practical Examples
Example 1: Add GST
- Net price: $100
- GST (15%): $15
- Total: $115
Example 2: Remove GST
- Total price: $230
- GST: $30
- Net price: $200
What This Calculator Does
- Add GST (15%) to a price
- Remove GST from a total
- Reverse GST calculation
- Calculate GST refunds
- Works for invoices, services, and imports
How GST Works in New Zealand
- GST in New Zealand is charged at 15%
- Applied to most goods and services
- Businesses registered for GST must:
- Charge GST
- Collect GST
- Pay or claim refunds from IRD
Who Should Use This Calculator
- Small business owners
- Freelancers & consultants
- Importers & exporters
- Online sellers (Shopify, WooCommerce, etc.)
- Individuals calculating GST refunds
GST Refunds in New Zealand
- GST refunds apply when:
- Input GST > Output GST
- Refunds are claimed via GST returns to IRD
- This calculator helps estimate refundable GST
Frequently Asked Questions
Q: What is the GST rate in New Zealand?
A: The standard GST rate in New Zealand is 15%.
Q: How do I remove GST from a price?
A: Divide the GST-inclusive price by 1.15.
Q: Is GST included in listed prices in NZ?
A: Most consumer prices are GST-inclusive unless stated otherwise.
Q: Can I use this calculator for invoices?
A: Yes, it works for invoices, quotes, and refunds.
This calculator follows New Zealand GST rules and standard accounting formulas. Always confirm final tax obligations with IRD or a registered tax advisor.
