NZ Budget 2026: 12 Tax and Benefit Measures to Watch on 28 May

The 2026 NZ Budget is delivered at 2:00 pm on Thursday 28 May. This is the Coalition government’s second Budget. Here are the 12 personal-finance tax and benefit measures we’re watching, what they’re at today, and what might shift.

For the live dashboard with confirmed values, see the Budget 2026 hub.

What’s already locked for 1 April 2026

Some 2026-27 changes take effect regardless of Budget night:

• KiwiSaver employer minimum match steps up from 3% to 3.5% on 1 April 2026, and again to 4% on 1 April 2027.
• KiwiSaver default employee rate steps up from 3% to 4% on 1 April 2026 for new auto-enrolments. Existing 3% contributors auto-move unless they apply for a temporary rate reduction.
• PAYE thresholds remain as set by Budget 2024 (effective 31 July 2024): 10.5% / 17.5% / 30% / 33% / 39% with brackets at $15,600 / $53,500 / $78,100 / $180,000.
• BrightLine remains 2 years (down from 10 years since 1 July 2024).
• Student loan repayment threshold stays at $24,128 unless announced otherwise.

You can run any of our calculators with the 2026-27 toggle today and see the baseline impact of these locked changes.

12 measures to watch on Budget night

1. PAYE thresholds

Today: $0-$15,600 at 10.5%, $15,601-$53,500 at 17.5%, $53,501-$78,100 at 30%, $78,101-$180,000 at 33%, $180,001+ at 39%.

What to watch: No major bracket reform telegraphed. Watch for any inflation-indexation announcement, especially on the bottom $15,600 threshold (last adjusted by Budget 2024).

Impact tools: PAYE calculator, take-home pay calculator, reverse salary calculator.

2. IETC abatement thresholds

Today: IETC abates between $48,000 and $66,667 of income, 13c per dollar.

What to watch: Possible lift in the abatement floor to widen eligibility, or a rate reduction.

3. KiwiSaver employer minimum match

Today: 3% (2025-26) → 3.5% (2026-27 legislated) → 4% (2027-28 legislated).

What to watch: Confirmation the 3.5% step still applies on 1 April 2026. Any further step-up in this Budget would push the date forward.

Impact tool: KiwiSaver calculator.

4. KiwiSaver default employee rate

Today: 3% (2025-26) → 4% (2026-27 legislated) for auto-enrolments. Existing 3% contributors auto-step unless they apply for a temporary reduction.

What to watch: Confirmation the 4% default still applies on 1 April 2026.

5. Government KiwiSaver member contribution

Today: $260.72 per year, halved from $521.43 by Budget 2024 cost-saving.

What to watch: Political pressure to restore the full $521.43. Could move either direction depending on fiscal position. Among the most volatile items on the watch-list.

6. Working for Families weekly amounts

Today: FTC $144 first child, $117 subsequent; IWTC $97.50 base + $15/wk per child above 3; Best Start $73/wk for years 1-3; MFTC $679/wk net.

What to watch: Annual inflation-adjustment to FTC/IWTC/Best Start amounts. Most likely a modest CPI-tracking lift; watch for above-CPI announcements as cost-of-living signal.

Impact tool: Working for Families calculator.

7. WfF abatement threshold and rate

Today: $44,900 family income / 27% abatement rate (one of the steepest tapers in developed-world family-payment systems).

What to watch: The abatement threshold typically lifts most years. Watch for rate cuts — political signals through 2026 hinted at simplification but nothing concrete.

8. Student loan repayment threshold

Today: $24,128 income threshold, 12% repayment rate on income above.

What to watch: Historically flat year-on-year but ripe for CPI adjustment after three years’ inflation. NZ-based borrowers — every $1,000 the threshold rises, you save $120/year. Overseas-based country bands typically update with Budget.

Impact tool: Student loan calculator.

9. ACC earner levy

Today: 2026-27 rate 1.75% on earnings up to $156,641, producing a max levy of $2,741.22. ACC sets levies on a separate annual cycle but Budget Estimates reference them.

What to watch: Confirmation the published 2026-27 cap and rate are accurate. ACC’s funding position has been criticised — a higher rate or cap is possible.

Impact tool: Take-home pay calculator (auto-includes ACC).

10. BrightLine test period

Today: 2 years (reverted from 10 years on 1 July 2024).

What to watch: Probably no change. Any restoration to 10 years would be a major housing-policy signal — unlikely under the current Coalition but worth watching for political compromises.

11. FIF $50,000 de-minimis threshold

Today: Foreign shares held with cost basis under $50,000 are exempt from FIF tax (taxed only on cash distributions). Above that, FIF tax applies via FDR (5%), CV (gain), or Comparative Value methods.

What to watch: Possible lift to broaden the simplified-investor exemption. NZ-resident investors holding US ETFs have lobbied for this for years.

Impact tools: FIF calculator, ASX shares FIF exemption checker.

12. GST rate

Today: 15% since 1 October 2010.

What to watch: Untouched for 16 years. Very unlikely to move. Any change would be a major announcement.

Impact tool: GST calculator.

Timing — what happens at 2 pm on 28 May

• 2:00 pm NZST — Minister of Finance delivers Budget speech in Parliament.
• 2:00 pm — Budget papers go live at budget.govt.nz simultaneously.
• 3:00 pm-ish — IRD post-Budget tax policy summary published at taxpolicy.ird.govt.nz with personal-tax numeric changes.
• 4:00 pm-ish — News coverage and political reaction. Treasury Budget Policy Statement releases.

At nztax.tools, the Budget 2026 hub updates with confirmed values from 4 pm onward, and calculators reflect the new 2026-27 settings within 2-3 hours of Budget speech.

Will Budget 2026 affect my 2025-26 tax return?

Almost no. The 2025-26 NZ tax year ended 31 March 2026 — eight weeks before Budget night. Almost all Budget measures start from 1 April 2026 (the 2026-27 year already in progress) or 1 April 2027 (next year). Run your IR3 tax refund estimator against the 2025-26 settings even after Budget night — those values are locked.

What we’re not changing

To keep this preview honest, here’s what’s off the watch-list because it’s just not realistic for Budget 2026:

• GST hike to 17.5% or 20% — politically toxic, no party advocating.
• Capital gains tax — current Coalition position is no CGT. Unchanged from 2023 election manifesto.
• Wealth tax — same as above.
• Income tax cuts beyond Budget 2024 — fiscally constrained; second-phase cuts not signalled.

If any of these appear on Budget night, the Budget 2026 hub will be the fastest way to see calculator impact.

Calculators that update automatically

These tools use the central getTaxYearConfig(year) data layer, so once we confirm 2026-27 values on Budget night, they update everywhere within a single deploy:

• PAYE calculator — full bracket breakdown
• Take-home pay calculator — PAYE + ACC + KiwiSaver + student loan
• KiwiSaver calculator — employer + employee + government
• Working for Families calculator — FTC / IWTC / Best Start / MFTC
• Student loan calculator — NZ + overseas-based
• IR3 tax refund estimator — full year reconciliation
• Tax rates table 2026-27 — quick reference

Bookmark the Budget 2026 hub and check back at 4 pm NZST on 28 May for confirmed figures.