GST Calculator
What This NZ GST Calculator Does
This NZ GST calculator helps you calculate Goods and Services Tax (GST) on prices used in New Zealand. You can use it to either add GST to a net amount or remove GST from a GST-inclusive price.
If you are registered for GST, you often need to know the exact GST portion of a price for invoicing, accounting, or reporting purposes. Manually calculating GST can lead to rounding errors, especially when working with multiple prices or large amounts. This calculator removes that risk by applying the correct GST formula instantly.
The calculator supports the standard New Zealand GST rate of 15% and can also be adjusted for custom rates if needed. It is suitable for small businesses, freelancers, contractors, and anyone who needs a quick GST calculation without spreadsheets or manual formulas.
How GST Is Calculated in New Zealand
In New Zealand, GST is currently charged at a standard rate of 15% on most goods and services.
The calculation depends on whether you are adding GST or removing GST:
- Adding GST:
The GST-inclusive price is calculated by multiplying the net amount by 1.15. - Removing GST:
The GST-exclusive amount is calculated by dividing the GST-inclusive price by 1.15.
This calculator automatically applies the correct formula based on your selection and shows the GST amount separately so you can clearly see how much tax is included.
GST Calculation Examples
Example 1: Adding GST
If your price before GST is $100:
GST at 15% = $15
Total price including GST = $115
Example 2: Removing GST
If a price including GST is $230:
GST portion = $30
Price before GST = $200
These examples show how GST affects the final price and why accurate calculation is important for invoicing and reporting.
Who Should Use This GST Calculator
This calculator is useful for:
– Small business owners in New Zealand
– Sole traders and freelancers
– Contractors issuing invoices
– Anyone registered for GST
– Anyone checking GST-inclusive or GST-exclusive prices
If you regularly deal with GST, this tool can save time and reduce calculation errors
Assumptions and Important Notes
These assumptions explain how
– This calculator uses the standard New Zealand GST rate of 15% unless changed.
– Results are rounded to two decimal places by default.
– This tool is for calculation purposes only and does not replace professional tax advice.
– GST rules can change, so always confirm current requirements when filing returns.
Always review the latest GST rules and consult a qualified professional if you need advice specific to your situation.
Frequently Asked Questions
GST (Goods and Services Tax) in New Zealand is a 15% tax applied to most goods and services.
To add GST, multiply the amount by 1.15. To remove GST from a GST-inclusive amount, divide the amount by 1.15.
To remove GST from a price that already includes GST, divide the amount by 1.15. The difference between the original amount and the result is the GST portion.
Yes, the standard GST rate in New Zealand is currently 15%.
Businesses that are registered for GST in New Zealand must charge 15% GST on taxable goods and services.o two decimal places for practical use.