Business vs Personal
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Business or Personal?

Three questions. We tell you what IRD will likely accept as claimable — and how much of it.

PERSONALBUSINESS
65%
Business decision
Claimable on your tax return
PERSONALBUSINESS
35%
Personal decision
Out of your own pocket
Leaning business

More work than play. Claim the business portion — keep evidence of the split.

Question 1

How often do you use it for paid work?

Question 2

Would you have bought it if you weren't running a business?

Question 3

Your best guess — what % is for business?

0%50%100%
60%business use
Item cost (NZD, incl. GST)
What did this thing actually cost you?
Business slice
$325.00
Claimable as a business expense
Personal slice
$175.00
Out of your own back pocket
The one word IRD cares about

Nexus — does it actually help you earn?

Nexus is tax-agent speak for "a clear connection between the expense and the money you earn." In plain English: if buying it helps you do paid work, it has nexus and you can probably claim it. If it doesn't, you can't.

Strong nexus
Saw blade for the job today → 100% claim. No question.
Weak / no nexus
Gym membership "to stay fit for work" → too thin a thread. IRD will throw it out.

Rule of thumb: if you'd struggle to explain the connection to your mate at smoko, you'll struggle to explain it to IRD too.

If IRD ever asks

Show your working

  • · Keep receipts (GST invoices if you're registered).
  • · For vehicles, run a 90-day logbook every 3 years (IRD-approved).
  • · Mixed-use phones / internet: pick a fair % and stay consistent year to year.
  • · Entertainment (food, drink, hospitality with clients) is generally only 50% deductible.
  • · If you're guessing, write it down — a defended estimate beats none at all.
Common tradie expenses
Item
Typical
Note
Drill bits, saw blades, hand tools
100%
Pure work — claim all.
Work van — daily use
90%
Logbook ideal, otherwise 75–90%.
Mobile phone (one phone, mostly work calls)
70%
Internet at home (1 person works from home)
50%
Ute that's also the family car
65%
Needs logbook.
Client coffee / lunch
50%
50% IRD entertainment rule.
Boots + hi-vis
100%
Protective clothing, fully claimable.
Gym membership
5%
Not worth claiming — very hard to defend.
Subscription to a trade magazine
100%
TV / Netflix in the workshop
10%
Hard to defend.
Mixed-use is where IRD audits trip people up

Picking a fair business % is half art, half evidence. Our $75/mo Growth plan reviews these calls every month so you're not making them alone.

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So you can keep a record if IRD ever asks.

By NZ Taxation Ltd

Not sure? We're sure for a living.

Determining what's deductible is literally our job. If you're guessing on more than a couple of expenses a year, an accountant probably pays for themselves.