Taxes power the everyday things we rely on, from hospitals to highways. Inland Revenue is the government department that collects those taxes and runs key services like student loans, child support, and Working for Families. If you earn, spend, or run a business in Aotearoa, you deal with Inland Revenue—often without even noticing. This guide explains what it does, how it works, and what to do to stay on top of your obligations with less stress.

What is

Inland Revenue (often called IR or IRD) is New Zealand’s tax authority. It administers and enforces tax laws, collects revenue, and delivers related services. That includes income tax for individuals and businesses, Goods and Services Tax (GST), PAYE for employees, student loan repayments, child support, KiwiSaver contributions, and Working for Families tax credits.

It operates under laws like the Income Tax Act, the Tax Administration Act, and the GST Act. Inland Revenue’s job is to make sure people pay the right amount at the right time, help taxpayers meet their obligations, and protect the integrity of the system so funding for public services is steady and fair.

How it works

Identification and registration

Everything starts with an IRD number. You need one to work, pay tax, open a KiwiSaver account, or run a business. Once you have an IRD number, you can create a myIR account to see your tax records, messages, assessments, and balances online.

Earning and reporting

• Employees: Your employer withholds PAYE from your wages or salary and sends it to Inland Revenue. They also file “payday” information within two working days of each payday, so Inland Revenue stays up to date.
• Contractors and self‑employed: You usually pay tax directly. Some contractors have schedular payments withheld by payers; others handle provisional tax themselves.
• Investors: Banks and fund managers deduct resident withholding tax (RWT) or use your prescribed investor rate (PIR) for PIE funds.

Filing and assessment

• Most salary and wage earners don’t file a return. Inland Revenue often issues an automatic assessment using employer and bank data.
• If you have untaxed income (like self‑employed, rental, overseas income), you generally file an IR3 individual tax return for the tax year 1 April to 31 March.
• Businesses file income tax returns and, if registered, GST returns (monthly, two‑monthly, or six‑monthly).

Paying and refunds

• Pay via myIR direct debit, internet banking, or debit/credit card. Use the right tax type and period so payments match your account.
• If your tax was overpaid, Inland Revenue usually issues a refund or credits the amount to another balance you owe.

Deadlines, penalties, and interest

• Missed filings or payments can attract penalties and use‑of‑money interest. The sooner you fix it, the less it costs.
• You can often set up an instalment plan if cash flow is tight—best done before a due date.

Digital services

myIR is the hub for messages, statements, returns, and payments. It reduces paperwork and helps Inland Revenue calculate tax more accurately with real‑time data, such as payday filing from employers and investment income from banks.

Types / examples

Common taxes and obligations

• Income tax for individuals: Paid through PAYE if you’re an employee, or via returns and provisional tax if you’re self‑employed.
• Income tax for businesses: Companies and sole traders file annual returns; companies pay tax on profits and may have imputation credits for dividends.
• GST (15%): Charged on most goods and services. Register if your taxable supplies are over $60,000 in a 12‑month period (or voluntarily earlier).
• Provisional tax: Prepayments towards your year‑end income tax if your residual income tax is over a threshold.
• Fringe benefit tax (FBT): Paid by employers on certain non‑cash benefits to employees, like personal use of a company car.
• Resident withholding tax (RWT): Deducted by banks and companies from interest and dividends.
• ACC earners’ levy: Collected with PAYE or via your return; funds injury cover, separate from income tax.
• Student loan repayments: Deducted from wages or paid directly if self‑employed or overseas, based on a threshold.
• KiwiSaver: Employee contributions and employer contributions flow through payroll. Inland Revenue passes them to your scheme.
• Working for Families and child support: Inland Revenue assesses and pays or collects based on your income and family situation.

Typical scenarios

• New employee: Give your IRD number and a tax code to your employer. PAYE and student loan repayments (if any) are deducted automatically. Inland Revenue may auto‑assess your year‑end position.
• Freelancer/contractor: Keep records of income and expenses. Consider provisional tax. You’ll likely file an IR3 and pay any terminal tax due after 31 March.
• Small retailer: Register for GST once you cross $60,000 in sales. File returns regularly, claim input tax on business expenses, and pay the net GST.
• Landlord: Include rental income and deductible expenses in your IR3. Residential property rules can affect what you can claim and when—check the latest guidance.
• Investor: Ensure your RWT rate and PIR are correct with your bank or fund to avoid under‑ or over‑taxing.

Comparison of key tax types

Pros and cons

Pros

• Automatic assessments: Most employees don’t need to file, reducing admin.
• Real‑time payroll reporting: Payday filing improves accuracy and reduces end‑of‑year surprises.
• myIR convenience: Secure, 24/7 access to balances, returns, messages, and payments.
• Integrated services: Student loans, child support, KiwiSaver, and Working for Families are all connected through Inland Revenue.
• Payment options: Direct debit and instalment plans help manage cash flow.

Cons

• Complexity for small businesses: GST choices, provisional tax, and FBT rules take time to learn.
• Penalties and interest: Missed due dates can get expensive quickly.
• Cash flow pressure: Provisional tax requires paying before final profits are known.
• Record‑keeping burden: Good records are essential to claim deductions and stay compliant.

How to use or choose

Step‑by‑step: Get set up and stay compliant

1. Get an IRD number: Essential for working, banking, and starting a business.
2. Create a myIR account: Link your IRD number and turn on notifications.
3. Pick the right tax code: Employees use the code that matches their situation; update it when things change.
4. Confirm your RWT/PIR: Ask your bank and fund providers to set the correct rates.
5. Decide on GST: Register if you expect over $60,000 in sales in 12 months. Consider voluntary registration for credibility or input claims.
6. Choose GST accounting: Payments basis for cash flow simplicity, invoice basis for accrual accuracy, or hybrid if it fits.
7. Track income and expenses: Use software or a spreadsheet. Keep invoices and receipts.
8. Plan for provisional tax: If you’re moving beyond PAYE income, set calendar reminders and put money aside regularly.
9. Use myIR payments: Set up direct debit for due dates and avoid late payment mistakes.
10. Ask early if unsure: Inland Revenue guidance and tax agents can save you from penalties.

Choosing methods and settings

• GST registration timing: Register when you’re close to the $60,000 threshold or earlier if you make large input‑taxed purchases.
• GST accounting basis:
  • Payments basis: Taxed on money received/paid. Favoured by many small businesses.
  • Invoice basis: Taxed on invoices issued/received. Better if you offer credit terms.
  • Hybrid: Mixes both; suits some industries with specific flows.
• Provisional tax method:
  • Standard uplift: Predictable instalments based on previous years.
  • Estimation: If income is dropping, but be careful—underestimates can mean interest.
  • Ratio method: Links payments to GST‑reported sales, smoothing seasonal cash flows.
• Payroll choices: If you hire staff, use payroll software that supports payday filing and auto‑calculates PAYE, student loans, ACC levies, and KiwiSaver.

FAQ

When is New Zealand’s tax year?

It runs from 1 April to 31 March. Many returns and assessments relate to that period, with payments due in the following months.

Do I need to file a tax return?

If you earn only salary or wages and your information is up to date, Inland Revenue often auto‑assesses you. You usually must file an IR3 if you have self‑employed, rental, or overseas income, or other untaxed income.

How do I get an IRD number?

Apply online or through approved channels with identity documents. Once issued, keep it safe and use it for jobs, banking, and tax.

What is payday filing?

Employers report employee pay and deductions to Inland Revenue every payday, usually within two working days. It keeps tax records current and improves accuracy.

Should I register for GST?

Yes if your taxable supplies are over $60,000 in any 12‑month period. You can register earlier if it suits your business model and cash flow.

What are common GST due dates?

For monthly and two‑monthly filers, returns and payments are generally due on the 28th of the following month, with a 15 January date covering the November/December period.

What is provisional tax?

It’s paying income tax in instalments during the year instead of a large amount after year‑end. It applies if your residual income tax is over a set threshold.

How do refunds and bills work?

After an assessment, Inland Revenue either issues a refund or shows a bill in myIR. You can apply refunds to future taxes or request payment to your bank account.

How do I avoid penalties?

File and pay on time, keep contact details current, and set up direct debits or reminders. If you’re going to be late, contact Inland Revenue early to discuss options.

How does Inland Revenue handle student loans, child support, and KiwiSaver?

It collects student loan repayments through PAYE or via your return, manages child support assessments and payments, and channels KiwiSaver contributions from payroll to your chosen provider.

What if I have overseas income?

You generally need to declare worldwide income if you’re a New Zealand tax resident. Double tax agreements may reduce or eliminate double taxation—get advice if this applies to you.

How do I contact Inland Revenue?

Log in to myIR to send secure messages or check balances. You can also call, but online services are usually faster for routine tasks.

Final thoughts

Inland Revenue is built to collect tax fairly and keep New Zealand running. With an IRD number, a myIR login, and a simple system for records and reminders, most people can manage their obligations without drama. If you outgrow DIY, a payroll tool or tax agent can save time and reduce risk. The rules do change, so check current guidance on the Inland Revenue website whenever your situation shifts.