ESCT vs PAYE in NZ: What’s the Difference?

PAYE taxes your wages — deducted from your pay before it reaches you. ESCT taxes your employer’s KiwiSaver contribution — deducted from their contribution before it reaches your KiwiSaver account. They’re both deductions that happen “around” your pay, but they tax two entirely different amounts of money, use two entirely different rate tables, and neither one appears where most people expect on a payslip.

See both calculated together for your exact salary with our free PAYE Calculator and ESCT Calculator.

The One-Sentence Version

If it comes out of your pay, it’s PAYE (or a related deduction like KiwiSaver or student loan). If it comes out of your employer’s contribution to your KiwiSaver, before that money ever reaches you, it’s ESCT. Confusing the two is extremely common, because both sound like generic “payroll tax” and both ultimately relate to your KiwiSaver balance — but they tax different pools of money, paid by different parties.

Side-by-Side Comparison – ESCT vs PAYE

	PAYE	ESCT
Full name	Pay As You Earn	Employer Superannuation Contribution Tax
What it taxes	Your salary/wages	Your employer’s KiwiSaver (or complying fund) contribution
Who effectively pays it	You (deducted from your pay)	Your employer (deducted from their contribution, before it reaches you)
Rate structure	10.5% / 17.5% / 30% / 33% / 39%, based on your annual income	10.5% / 17.5% / 30% / 33% / 39%, based on your salary + employer super contributions, at different dollar thresholds than PAYE
Calculated using	Your tax code (M, ME, S, SH, etc.)	An “ESCT rate threshold amount” set annually, based on prior-year earnings
Visible on your payslip?	Yes, usually as a combined “PAYE” line (income tax + ACC levy)	Rarely — most employees never see it, since it’s deducted before the contribution reaches them
Remitted to IRD by	Employer, on your behalf	Employer, on their own behalf
Also covers ACC levy?	Yes, blended into the PAYE deduction table	No — ESCT is a separate, standalone calculation

Why the Rate Tables Look Similar But Aren’t the Same

This is where genuine confusion happens — both PAYE and ESCT use the same five percentages (10.5%, 17.5%, 30%, 33%, 39%), which makes people assume they’re interchangeable. They’re not, for two reasons:

1. Different thresholds. PAYE’s brackets sit at $15,600 / $53,500 / $78,100 / $180,000. ESCT’s thresholds sit at $18,720 / $64,200 / $93,720 / $216,000 — roughly 20% higher across the board, reset from 1 April 2025.
2. Different income base. PAYE is based on your actual current income this year. ESCT is based on your prior year’s total earnings (salary plus employer super contributions) — a fundamentally different measurement.

Practical result: someone squarely in the 30% PAYE bracket could easily be in the 33% ESCT bracket, or vice versa, purely because the two systems measure different things over different periods.

Two Full Worked Examples, Side by Side

Here’s exactly how PAYE and ESCT apply to the same person, on the same salary, at the same time — showing how separately each deduction actually operates.

Meet Aiden: $85,000/year salary, 3.5% employer KiwiSaver contribution, no student loan.

PAYE (on Aiden’s own wages):

Band	Calculation	Tax
10.5%	$15,600 × 10.5%	$1,638.00
17.5%	$37,900 × 17.5%	$6,632.50
30%	$24,600 × 30%	$7,380.00
33%	($85,000 − $78,100) × 33%	$2,277.00
Total PAYE		$17,927.50

ESCT (on Aiden’s employer’s $2,975 contribution — 3.5% of $85,000):

Aiden’s ESCT rate threshold amount (prior year salary + employer contributions)	ESCT rate applied
Falls in the $64,201–$93,720 band	30%

Step	Calculation	Amount
Employer’s gross contribution	3.5% × $85,000	$2,975.00
ESCT deducted	$2,975 × 30%	−$892.50
Net amount reaching Aiden’s KiwiSaver from his employer		$2,082.50

Two completely separate calculations, two completely separate tax amounts ($17,927.50 in PAYE vs. $892.50 in ESCT), on two completely separate pools of money — Aiden’s own $85,000 salary, and his employer’s $2,975 contribution.

Where Each One Physically Shows Up

This is the part that trips people up in practice:

• PAYE appears as a clear deduction line on your payslip, directly reducing your net pay each payday.
• ESCT almost never appears on a standard employee payslip at all — it’s handled entirely on the employer’s side, deducted from their contribution before it’s even reported as going into your KiwiSaver account. You’d typically only encounter the term “ESCT” if you specifically asked your employer or accountant why the employer contribution figure looked smaller than a simple percentage calculation would suggest.

(For the full breakdown of every payslip line, see our How to Read Your NZ Payslip guide.)

Do PAYE and ESCT Ever Interact With Each Other?

Not directly — they’re calculated completely independently, and one doesn’t feed into the other. However, they’re related in one meaningful way: your PAYE tax code and your income level both influence how much money moves through the system in the first place, and your prior year’s combined salary and employer contributions (which PAYE partly determines, since it’s based on your salary) is exactly what sets your ESCT rate threshold amount for the following year.

In other words: a pay rise this year doesn’t just affect this year’s PAYE — it likely bumps your ESCT rate next year too, since ESCT looks backward at what you actually earned.

A Common Myth: “ESCT Is Just Extra PAYE on My KiwiSaver”

This is inaccurate in an important way. Your own KiwiSaver contribution (deducted from your wages) is never subject to ESCT — it’s simply part of your normal PAYE-taxed salary that you’re choosing to direct into KiwiSaver. ESCT applies exclusively to the employer’s side of the contribution. If someone tells you “ESCT is being deducted from your KiwiSaver contribution,” that’s incorrect — it’s deducted only from what your employer adds, never from what you personally contribute.

Frequently Asked Questions

This guide provides general information only, not tax advice. Employers calculating exact ESCT rates for specific employees should confirm with Inland Revenue or a payroll specialist.