[RileyJames]

This is pretty much how tax works in New Zealand.

I received a tax return this year, which surprised me because I hadn’t filled anything out.

Turns out they just use the details provided by your employer, tax paid and send you your return.

I assume you can request a revaluation to submit additional expenses, etc.

Note: this is for standard employment. I’ve been contracting since then and have an app/service handling taxes for me now.