Free ESCT Calculator for New Zealanders
ESCT is the tax employers pay on KiwiSaver employer contributions. The rate is set by the employee’s annualised income plus the prior-year employer contribution, in five bands.
Your ESCT
Based on a $2,400 employer contribution and $80,000 salary.
About our ESCT Calculator
ESCTESCTEmployer Superannuation Contribution Tax; tax on the employer's KiwiSaver contribution.View in glossary → taxes the employer’s KiwiSaver contribution at a rate matching the employee’s combined income. The bands sit at $16,800, $57,600, $84,000, and $216,000, with rates of 10.5%, 17.5%, 30%, 33%, and 39%. The employer pays ESCT directly to IRD; the employee never sees it on their pay slip.
For most NZ employees in the $50,000-$80,000 salary band, ESCT lands at 30% of the employer KiwiSaver match. On a $74,000 salary with 3.5% employer match, ESCT is around $777 a year per employee, on top of the $2,590 KiwiSaver match itself.
How to use it
Enter the employee’s annual salary and the employer KiwiSaver contribution rate (3.5% is the 1 April 2026 minimum). The calculator returns the ESCT band, the per-pay ESCT, and the annualised total.
Why use it
For payroll teams setting up a new KiwiSaver-member employee, picking the right ESCT rate at the start of the year saves square-up adjustments later. The rate is locked for the full tax year, so getting it right at the 1 April reset is worth a few minutes of work.
The maths behind it
ESCT = Employer KiwiSaver contribution × ESCT rate band ESCT applies to the employer’s KiwiSaver contribution at a rate matching the employee’s annualised income plus prior-year employer contribution. ESCT bands: 10.5% on income to $16,800, 17.5% to $57,600, 30% to $84,000, 33% to $216,000, and 39% above. The rate the employer applies is set at the start of each tax year and stays for the year. The bands are slightly different from the regular PAYE brackets.
Worked example
Sumi runs a marketing agency in Cromwell, paying her account manager $74,000 with a 3.5% KiwiSaver match.
Annual employer KiwiSaver contribution: $74,000 × 3.5% = $2,590. Annualised employee income plus the employer KS contribution: $76,590, which sits in the $57,601-$84,000 ESCT band at 30%.
ESCT for the year: $2,590 × 30% = $777. The employer pays ESCT alongside PAYE through the payday filing system; the employee never sees ESCT on their pay slip.
If the employee’s salary was $90,000 instead, the annualised income-plus-employer-KS would push into the $84,001-$216,000 band at 33%. Same $3,150 employer contribution, but ESCT lifts to $1,040.
Things to keep in mind
- ESCT is the employer’s tax. The employee never sees ESCT on their pay slip; it sits in the employer’s payroll obligation alongside PAYE. The employer KiwiSaver contribution is added to the employee’s KiwiSaver fund (not net of ESCT); ESCT is paid separately to IRD.
- Rate set at year start. Employers set the ESCT rate for each employee at the start of each tax year (1 April), based on the prior year’s annualised income plus the employer contribution. Mid-year salary changes do not change the ESCT rate until the following 1 April.
- New employees. For employees who started in the current year, ESCT is calculated on the annualised current-year income plus the expected employer contribution. The same rate then applies for the rest of the year.
- ESCT is a deductible business expense. For company income tax purposes, ESCT is an allowable business expense, like PAYE and ACC employer levies. It reduces taxable profit and therefore the company tax bill.
NZ-specific notes
FAQs
Why does ESCT exist?
ESCT taxes the employer-provided KiwiSaver contribution at the same rate the employee would pay if the same money were paid as ordinary salary. Without ESCT, employer contributions would be a tax-free benefit, which would advantage employer-paid retirement contributions over employee-paid ones.
Does the employee pay ESCT?
No. ESCT is paid by the employer to IRD. The employer’s KiwiSaver contribution still reaches the employee’s KiwiSaver fund in full; ESCT is paid by the employer on top of the contribution.
How do the ESCT bands compare to PAYE brackets?
The ESCT bands are similar but not identical. ESCT bands sit at $16,800 / $57,600 / $84,000 / $216,000, where PAYE brackets sit at $15,600 / $53,500 / $78,100 / $180,000. The ESCT bands are slightly wider, so an employee can be in the 30% PAYE bracket but the 17.5% ESCT band.
When does the ESCT rate change?
On 1 April each year, the employer reviews the rate for each employee based on the prior year’s income plus employer contribution. Mid-year promotions or pay rises do not change the rate until the following 1 April.
Is ESCT deductible for tax purposes?
Yes, ESCT is an allowable business expense, reducing the employer’s taxable profit. The same applies to the underlying employer KiwiSaver contribution and any employer ACC levy.
References & sources
- Inland Revenue, "Employer Superannuation Contribution Tax (ESCT)". ird.govt.nz
- Inland Revenue, "Payday filing". ird.govt.nz
- Inland Revenue, "KiwiSaver changes (April 2026 contribution rates)". ird.govt.nz
- Inland Revenue, "Employer contributions to KiwiSaver". ird.govt.nz