Free Tax Calculators & Business Tools for New Zealand Businesses
Our free tax calculators and accounting tools help New Zealand businesses estimate
business tax, GST due dates, and provisional tax.
These tools are designed for startups, sole traders, contractors, and SMEs operating in NZ.
⚠️ Calculators provide estimates only. For accurate tax planning, speak to a qualified accountant.
Free NZ Tax & Accounting Tools
NZ Business Tax Calculator
Estimate how much business tax you may need to pay based on revenue and expenses.
GST Due Date Calculator
Check your next GST filing deadline based on your filing frequency.
Provisional Tax Calculator
Plan your provisional tax instalments for the year.
How Do These NZ Tax Calculators Help?
These calculators answer common questions such as:
- How is business tax calculated in New Zealand?
- When is GST due in NZ?
- How many provisional tax instalments do I need to pay?
They are ideal for business owners who want quick answers before speaking to an accountant.
NZ Business Tax Calculator
Use this calculator to estimate your annual business tax payable in New Zealand.
The default tax rate is set to 28%, commonly used for companies.
GST Due Date Calculator (NZ)
GST filing dates in New Zealand depend on whether you file monthly, bi-monthly, or six-monthly.
Use this tool to estimate your next GST due date.
Provisional Tax Calculator (NZ)
If your residual income tax exceeds NZ thresholds, you may need to pay provisional tax.
This calculator divides your estimated annual tax into three instalments.
Learn More About NZ Tax & Compliance
Need Accurate Tax Advice?
Online calculators provide estimates — professional advice ensures compliance and savings.
Speak to our NZ accounting experts today.