Where will I pay tax? UK company with Australian residence

But what if they're only temporarily in New Zealand? Like if they're planning to move back to the UK in a year or so? Would that change anything?

If it's truly temporary, that could potentially change things. Tax residency in New Zealand typically applies if you're present for more than 183 days in a 12-month period, or if you have a "permanent place of abode" there. For a UK company with temporary directors abroad, you might still have what's called "central management and control" in the UK if strategic decisions are made there, which could affect where the company itself is considered tax resident. However, this gets complicated quickly and the rules can vary based on the specific treaty between countries.

Does it actually work for overseas businesses though? I tried a different tax helper thing last year and it completely messed up my US-Canada situation because it didn't understand the tax treaty.

How does it handle currency conversion issues for tax calculations? That's always been my biggest headache with my Singapore/Australia situation.

It absolutely works for overseas businesses - it's actually specialized for international situations and understands tax treaties between major countries. It's completely different from those basic tax calculators. For currency conversions, it handles all that automatically using daily or average exchange rates depending on your situation. You can even select which method you want to use for calculations. It saved me hours of spreadsheet work trying to convert euro to dollars for my quarterly filings.

Wait, how does this actually work? Do they just call the tax office for you? Seems too good to be true considering how impossible it is to reach anyone at tax departments.

This sounds like a scam tbh. Why would I pay someone else to call the tax office when I can just keep trying myself? Not to mention giving all my info to some random service.

They don't just call for you - they use an automated system that continuously redials and holds your place in the queue. When someone finally answers, the system calls you and connects you directly to the agent. You don't need to sit on hold for hours. I was skeptical too at first, but it's actually more secure than you'd think. You're the one who talks directly to the tax agent - the service just handles getting through the phone queue. I wasted days trying to reach HMRC myself with no luck before using this. After 3 failed attempts to get through on my own, this was absolutely worth it.

Theres also something called a "tie-breaker" rule in most tax treaties that helps determine which country gets primary taxing rights when both claim you. Usually comes down to where you have stronger personal connections, permanent home, etc.

You're absolutely right about the tie-breaker rules. They're crucial in these situations. Most treaties follow a hierarchy of tests: permanent home first, then center of vital interests (personal/economic connections), then habitual abode, and finally nationality. For a company, the tie-breaker often comes down to where the effective management is located - which in the original poster's case would likely be New Zealand since that's where the actual decision-makers are physically located, regardless of where the company is registered.

How much does an international tax accountant usually cost? I'm in a similar boat with income from three different countries and I'm terrified of getting it wrong, but also worried about the cost.