IR330 Form: Fill Out Your Tax Code Declaration Online
Upload the IR330 your employer or payer handed you, type your details in, sign it, and download the copy to give back. Contractors: it's the IR330C you want, and it uploads the same way.
IR330 or IR330C? Sort this out first
They look alike and they get mixed up constantly, usually by someone who's just moved from a salaried job to contracting.
| IR330 | IR330C | |
|---|---|---|
| Full name | Tax code declaration | Tax rate notification for contractors |
| Who uses it | Employees on salary or wages, and several other PAYE income types | Contractors receiving schedular payments |
| What you declare | A tax code | A withholding rate |
| Where it goes | To your employer or payer, either way. Not to Inland Revenue. | |
If you've been given the wrong one, ask for the right one before filling anything in. A tax code entered on a contractor form doesn't translate.
What happens if you don't hand one in
This is the part most guides skip, and it's the reason the form is worth doing on day one rather than day thirty. The IR330 itself warns that if you don't complete its numbered sections, your employer has to deduct tax at the no-notification rate, currently 45%.
That's not a penalty in the punitive sense. It's the default the payer must apply when nobody has told them what code to use. Any over-withholding at that rate is reconciled through the end-of-year process, but in the meantime it lands on every pay. Confirm the current rate on the Inland Revenue page, since rates are set by legislation and do change.
What the form asks for
The IR330 is a short declaration followed by notes explaining the tax codes, and the declaration itself is built in three numbered blocks.
Your details. Your name and your IRD number. The IRD number box is the one people fumble: an 8-digit number starts in the second box, not the first, and a scanned copy filled in by hand is exactly where that goes wrong.
Your tax code. One code, ticked from the list, with the student loan options sitting alongside it. The notes page walks through the criteria for each code.
Your declaration. Signature and date. Unsigned forms get sent back.
There's also a block for the employer or payer's own use. That one isn't yours to complete.
The current edition is the October 2025 IR330. If the copy you were given looks older, download a fresh one from Inland Revenue rather than filling in a stale version.
Where the completed form ends up
With your employer or payer, and it stops there. They keep the completed IR330 with their business records for seven years after the last payment they make to you, and they don't forward it to Inland Revenue.
Two practical consequences. If your tax code changes, give your employer or payer a new IR330. And because the form lives in an HR file rather than a government system, a clean typed copy is worth more than a phone photo of a biro scrawl.
The KS2 that came in the same envelope
New-starter packs in New Zealand usually contain more than the IR330. The KS2, the KiwiSaver deduction form, is the common companion, because it's the other form you complete and hand straight back to your employer rather than sending anywhere. It's a different form with a different purpose, so it needs filling in separately. Upload it here the same way when you get to it.
Filling the Inland Revenue PDF here
Inland Revenue publishes the IR330 as a downloadable PDF and expects you to complete it and give it to your employer, which is the workflow this page is built around. Upload the file above and type into it.
If the copy you were given is the original IRD PDF, its form fields are used directly. If it's been flattened into a plain digital PDF by whatever emailed it to you (the interactive fields are gone, but the text is still real and selectable), field detection rebuilds the typing spots, the tick boxes for the tax code, and the signature line. It doesn't work on a scanned image or a photo of a paper form, since there's no text layer to read.
What the tool won't do is pick your tax code. It puts the code you've decided on into the right box legibly. Working out which code applies is Inland Revenue's guidance, not a PDF editor's.
Privacy: your IRD number is on this form
A completed IR330 carries your name and IRD number. It's uploaded to our server so the fields can be detected and filled, it is never saved to an account, database, or document library, and it's automatically deleted from the server within an hour of your last activity. We keep no permanent copy.
Related pages
The tax and payroll forms hub lists the other form pages, including Canada's TD1 if you're comparing new-starter paperwork across countries. For signing anything else, fill and sign PDF online covers that workflow.
This page explains the form; it isn't tax advice, and it deliberately doesn't recommend a tax code. See the official Inland Revenue guidance or ask a tax professional about your situation.
Frequently asked questions
What is the IR330 used for?
It's the Tax code declaration. You tell your employer or payer which tax code applies to this job, and they use it to work out the PAYE deducted from each pay. The completed form stays with them.
IR330 or IR330C: which one do I need?
The IR330 is for salary and wages, where a tax code drives the deduction. The IR330C is the contractor version, the Tax rate notification for contractors, used for schedular payments where you notify a withholding rate instead of a tax code. If you're unsure which applies, Inland Revenue's guidance covers it.
What happens if I don't give my employer an IR330?
The form states that if you don't complete its numbered sections, your employer has to deduct tax at the no-notification rate, currently 45%. Handing in a completed form is what stops that rate applying. Confirm the current rate on the Inland Revenue website.
Do I send the IR330 to Inland Revenue?
No. It goes to your employer or payer. They keep the completed form with their business records for seven years after the last payment they make to you, and they don't forward it to Inland Revenue.
What is the KS2 form that came with it?
The KS2 is the KiwiSaver deduction form. It's a separate form and it often arrives in the same new-starter pack as the IR330, because both are completed and handed back to the employer. Upload it here the same way if you need to fill it in.
Which tax code should I use?
We don't choose one for you, and no PDF tool should. Inland Revenue publishes the tax code criteria and a tool for working out which code fits your situation. Once you know the code, this page is for getting it cleanly onto the form.
Is my IR330 stored on your servers?
Not permanently. Your file is used only to detect and fill the fields. It is never saved to an account, database, or document library, and it is automatically deleted from our server within an hour of your last activity.
Get it back to payroll today
Upload the IR330 or IR330C, complete it, sign it, and download the copy your employer or payer needs.
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