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Business income tax: Filing business income tax returns
- Your business balance date
- Due dates for business tax returns
- Filing your income tax return
- If you need more time to file your return
- Filing your returns without paying
- If you don't file your tax return on time
The due date for filing your business income tax return depends on the balance date of your business.
Your business balance date is the end of the accounting year. When you apply for an IRD number, your balance date is 31 March. If you want a different balance date, you need to apply to us in writing, stating the reason for the change.
You cannot use a different balance date until you have received written approval from us.
The due date for filing an income tax return is 7 July, unless you have a tax agent with a valid extension of time. If you do have a tax agent then your income tax return is due 31 March of the following year.
The due date for filing your income tax return depends on the balance date of your business.
|If your balance date is between ...||then the due date for filing your income tax return is ...|
|1 October and 31 March (inclusive)||7 July.|
|1 April and 30 September (inclusive)||the 7th day of the 4th month after your balance date.|
If you're in business, you'll need to complete and send us an income tax return, and attach either a copy of your financial records or a form that summarises your income and expenses.
You can either file your income tax return online or download and complete the PDF and post it to us. You can find the appropriate return by going to the right hand site of this page under "Get it done online" or "Forms and guides" or by using the links below:
The information you will need to file your return is outlined on the coverpage to the online service or PDF.
If you can't file your tax return by the due date you can contact us to apply for an extension of time (EOT) to file it. Returns due by 7 July (for customers with a 31 March balance date) can have an EOT granted up to 31 March the following year.
An EOT arrangement can be granted if:
- a customer is linked to a tax agent and the tax agent has an EOT for all their clients
- a customer without a tax agent applies to us for an individual EOT.
Requests for an EOT should be made before the due date or before the expiry of an existing EOT (if you already have one). If you don't file your tax return on time and haven't contacted us, you may be charged a late filing penalty.
When you apply for an EOT, you will need to tell us:
- the return period concerned, and
- your reasons for requesting it.
In deciding whether to grant an EOT, we will take into account:
- the reasons for requesting an extension of time
- the taxpayer's filing history, and
- whether previous extension of time arrangements have been adhered to.
Payment is not required at the time of filing, but you must still file on time.
Usually you aren't required to make any income tax payments to us during your first tax year in business. However, during your second year of business you:
- must pay tax on the profit you made in the first year, and
- may also need to pay provisional tax for your second year (depending on the amount of profit you made in the first year).
If you are unable to pay the amount you owe on time, either complete our online Instalment arrangement proposal or phone us on 0800 377 771.
If you don't file your income tax return by the due date, you may have to pay a late filing penalty.
We may also make our own assessment of the tax you should pay, and take action to collect the assessed amount. This is called a "default assessment". A default assessment will remain in place until your return is filed. Once you file your return, the default assessment will be replaced by the actual assessment.
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