New Zealand
New Zealand tax refund calculator
Add your income, expense claims and tax already paid to see an estimated refund or amount owing. No sign in needed.
How this New Zealand tax estimate works
Your salary and side business profit are added together. Business profit is your revenue after eligible business expenses.
The calculator takes off any other eligible expense claims, then works out income tax and the ACC levy on your salary. It compares that with the tax you have already paid.
The result is an estimate, so your Inland Revenue assessment may differ. Business losses and ACC bills for self-employed work need separate review.
Frequently asked questions
Your net business profit is added to your other taxable income. Inland Revenue works out income tax on the total.
Yes, if the costs relate to earning contracting income. Claim only the eligible business-use share and keep records.
Ordinary salary earners cannot claim home office costs the same way a self-employed contractor can. Some separate non-business expenses may still qualify.
It is income tax paid in instalments during the year. Enter what you have already paid so the estimate can count it toward your tax bill.
No. It includes the ACC earners’ levy on salary, but ACC bills for self-employed work are separate.
Tax year, assumptions and sources
Uses 2026–27 New Zealand tax rules (1 April 2026 to 31 March 2027). The ACC levy is 1.75% of salary and wages up to $156,641.
This estimate is for full-year New Zealand tax residents. It excludes self-employed ACC invoices, tax credits, donations, student loans, KiwiSaver and special tax situations. Business losses are flagged for review. Compare the result with your Inland Revenue assessment.