Tax Time for NZ Landlords: Get IR3R-Ready Before 7 July
Quick question - are you reading this as a:
RentManager keeps your rent and expenses in NZ tax-year shape all year, fills in council rates and inspection mileage for you, and exports a tidy IR3R PDF plus an accountant pack. You confirm the figures with your accountant; we are not a tax agent.
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The New Zealand tax year for individuals runs 1 April to 31 March. If you own a rental, the income and expenses from that year go on an IR3R - the rental schedule that feeds your IR3 individual return. For most landlords the return is due by 7 July, and if you are reading this in June, that deadline is close.
This is the time of year landlords get the call from their accountant asking for "your rental numbers". This article is about making that an easy reply instead of a weekend of digging.
What actually goes on an IR3R
An IR3R is not complicated. It is rent received, minus the deductible costs of earning it, for one tax year. The main lines are:
- Rent received - what actually landed in your account during the year, not what was invoiced.
- Rates - your council rates for the property.
- Insurance - landlord and building cover.
- Interest - the interest portion of your mortgage. From the 2024-25 tax year, interest on residential rental borrowings is 100% deductible again, restored by the 2024 Amendment Act.
- Agent or management fees - if you use a property manager.
- Repairs and maintenance - fixing what breaks, not improving it.
- Other expenses - body corporate levies, accounting fees, legal fees, advertising for tenants, water charges, travel to the property, and so on.
Net rental income is rent minus all of that. That is the figure that flows onto your IR3.
Where the numbers usually go missing
The hard part is never the arithmetic. It is that the numbers live in different places all year. Rent is in your bank account. Rates and insurance are annual bills you half-remember. The plumber's invoice is in your inbox. The mileage to three inspections is in your head. By July, reconstructing it is a chore, and chores are where deductions get forgotten and money gets left on the table.
The fix is to capture each number when it happens, in a shape that already matches the IR3R. That is what RentManager does in the background all year.
What RentManager fills in for you
Some of your IR3R is already done before you think about it:
- Rent received comes straight from the payments you matched during the year - by bank feed or by hand - so the income line is real receipts, not an estimate.
- Council rates are pulled from council records for your property, so the rates line is filled even if you never typed it.
- Inspection mileage is tracked automatically every time you complete an inspection, at the current IRD per-kilometre rate, and folded into the schedule as a travel deduction you already earned by doing the inspection.
The rest is the handful of figures only you know - your insurance premium and your mortgage interest for the year. RentManager has a short "Complete your IR3R" step that pre-fills what it can and asks you for just those, one line per property.
The readiness checklist
Open the IR3R page and you get a short "ready to file" checklist: rent recorded, rates, insurance, mortgage interest, expenses captured, mileage. Each item that needs attention links straight to the place that fixes it. It turns "is this complete?" from a guess into a glance.
Hand your accountant a pack, not a shoebox
When the figures are in, you have three ways out:
- A tax summary PDF laid out to match the IR3R form, ready to print or email.
- A CSV for a spreadsheet.
- A one-file accountant pack - the IR3R PDF plus the supporting CSVs and a short note - that you forward to your accountant in one attachment.
That is the whole point: the accountant gets clean, coded numbers in the right shape, and you do not pay them to re-key a shoebox.
One honest line
RentManager is property management software, not accounting software, and it is not a tax agent. The IR3R it produces mirrors the IRD form for convenience and pulls your own data; you and your accountant confirm the final figures before you file. Used that way, it turns tax time from a July scramble into a five-minute export.
For what it is worth, this is how I run my own four rentals: I do my tax myself, in RentManager, and it works for me as a small landlord. If your situation is more complex, you do not have to. Tell your accountant to check RentManager, or share your account so they can see all the financial detail and pull the numbers themselves. If you are weighing software against an accountant-only setup, I wrote a separate piece on landlord accounting software in NZ.
If you want to see it on real data without setting anything up, open the live demo - it lands on a fully populated IR3R - or start a free trial and bring in your own.