How NZ Income Tax Brackets Work

New Zealand’s income tax system is progressive: you pay a higher rate only on the portion of income that falls within each bracket, not on your entire income. This is one of the most commonly misunderstood aspects of the tax system, so this guide walks through exactly how the brackets work for the 2025-26 tax year.

The Five Tax Brackets (2025-26)

New Zealand has five income tax rates, each applying to a specific band of income:

Income Range	Tax Rate
$0 – $15,600	10.5%
$15,601 – $53,500	17.5%
$53,501 – $78,100	30%
$78,101 – $180,000	33%
Over $180,000	39%

The five rates are unchanged from 2024-25, but the bracket thresholds have been widened for 2025-26 (up from $14,000/$48,000/$70,000 to $15,600/$53,500/$78,100).

No Tax-Free Threshold

Unlike Australia (which has an $18,200 tax-free threshold) or the UK (which has a £12,570 personal allowance), New Zealand taxes income from the very first dollar. There is no tax-free amount. Even if you earn just $10,000 in a year, you will pay 10.5% on all of it.

This is an important point for people moving to New Zealand from other countries — you cannot assume a threshold exists. The closest equivalent is the Independent Earner Tax Credit (IETC), which provides up to $520 per year for earners between $24,000 and $70,000, but this is a credit applied after calculating your tax, not a reduction in taxable income.

How Marginal Rates Work

The critical concept is marginal taxation: each rate applies only to the slice of income within that bracket.

Think of it like filling containers. The first $15,600 of income fills the 10.5% bucket. Once that’s full, the next dollars go into the 17.5% bucket, and so on up through the brackets. A higher rate never applies retroactively to income already taxed at a lower rate.

Worked Example: $65,000 Salary

Let’s calculate the income tax for someone earning $65,000 per year in 2025-26.

Step 1: First bracket — $0 to $15,600

$15,600 × 10.5% = $1,638

Step 2: Second bracket — $15,601 to $53,500

$37,900 × 17.5% = $6,632.50

Step 3: Third bracket — $53,501 to $65,000

$11,500 × 30% = $3,450

Total income tax: $1,638 + $6,632.50 + $3,450 = $11,720.50

So on a $65,000 salary, you pay $11,720.50 in income tax.

Effective tax rate: $11,720.50 ÷ $65,000 = 18.03%

Even though the top rate on the last dollar earned is 30%, the effective (average) rate is only 18.03% — because most of the income was taxed at lower rates.

Marginal vs Effective Rate

This distinction matters in practice:

• Marginal rate is the rate on your next dollar of income. At $65,000, your marginal rate is 30%.
• Effective rate is your total tax divided by your total income — in this case, 18.03%.

When people say “I’m in the 30% tax bracket,” they mean their marginal rate is 30%. They do not pay 30% on all their income.

Understanding this prevents a common misconception: getting a pay rise that pushes you into a higher bracket does not mean you’ll take home less money. Only the income above the bracket threshold is taxed at the higher rate.

What About Other Deductions?

Income tax is just one component of what’s deducted from your pay. Most NZ employees also have:

• ACC Earner’s Levy: 1.67% of gross earnings (up to an annual cap of $152,790 in 2025-26)
• KiwiSaver: typically 3%–10% of gross earnings contributed to your retirement savings
• Student loan repayments: 12% of income above $24,128 if you have an outstanding student loan

These are separate from income tax. Your take-home pay depends on all of these combined.

For a $65,000 salary with the default KiwiSaver rate of 3% and no student loan, the total deductions would be approximately:

• Income tax: $11,720.50
• ACC levy: $65,000 × 1.67% = $1,086
• KiwiSaver: $65,000 × 3% = $1,950
• Total deductions: $14,756.50
• Take-home pay: $50,243.50 (approx. $966 per week)

PAYE: How Tax Is Collected

For most employees, income tax is deducted automatically by employers through the Pay As You Earn (PAYE) system. You provide your employer with a tax code (typically “M” for primary employment), and they calculate and remit the correct tax to IRD on your behalf.

At the end of the tax year (31 March), IRD may send you a tax assessment. If your employer deducted slightly too much or too little — due to variable income, changing jobs, or multiple employers — you’ll either receive a refund or owe a small top-up.

Self-Employed and Provisional Tax

If you’re self-employed, income tax is not automatically deducted. Instead, you pay provisional tax in instalments throughout the year based on your estimated annual income. At year end, you file an income tax return and reconcile the difference. This is more complex and is covered in detail in our guide to provisional tax for the self-employed.

Tax Codes and Multiple Jobs

If you have more than one job or income source, the PAYE system needs to know which employer should apply the standard brackets. Your primary job uses the “M” tax code, which applies the full bracket structure from $0. Secondary jobs use codes like “S”, “SH”, or “ST” — these apply a flat rate without the lower bracket benefit, which can lead to overpayment that you claim back at year end.

Summary

• NZ has five income tax brackets ranging from 10.5% to 39%
• Tax applies from the first dollar — there is no tax-free threshold
• Each bracket rate applies only to income within that band, not your entire income
• At $65,000, you pay $11,720.50 in income tax — an effective rate of 18.03%
• PAYE handles deduction automatically for employees; self-employed pay provisional tax

Use the NZ Income Tax Calculator to see an exact breakdown for your specific income level.