NZ KiwiSaver Employer FAQ: 3% Contribution and Compliance

KiwiSaver is New Zealand’s voluntary work-based retirement savings scheme, established under the KiwiSaver Act 2006. For employers, KiwiSaver involves enrolment obligations, default 3% employer contribution, ESCT (Employer Superannuation Contribution Tax) deductions, and ongoing compliance through the IRD payday filing system. This FAQ covers the most common employer questions.

What is KiwiSaver?

KiwiSaver is a voluntary, work-based savings initiative designed to help New Zealanders save for retirement. Members contribute a portion of their gross wages, the employer matches with a minimum 3% contribution, and the government adds an annual member tax credit (up to a defined cap).

Members can withdraw funds:

• At age 65 (qualifying age for NZ Superannuation)
• For a first-home purchase (after 3 years’ membership)
• For significant financial hardship (subject to provider approval)
• For serious illness
• On permanent emigration (after 1 year)

KiwiSaver Act 2006: https://www.legislation.govt.nz/act/public/2006/0040/latest/DLM378372.html

IRD KiwiSaver: https://www.ird.govt.nz/kiwisaver

Who must be enrolled?

Automatic enrolment

Under KiwiSaver Act 2006, an employer must automatically enrol new employees who:

• Are aged 18 or over and under 65
• Are NZ citizens or entitled to live in NZ permanently
• Are starting new employment (not just changing roles within the same employer)

Opt-in

Employees who don’t meet automatic enrolment criteria (e.g. existing employees, casuals previously enrolled by a different employer) may opt in voluntarily.

Opt-out

A new employee can opt out between days 14 and 56 of starting (KS10 form via IRD). After day 56, they can stop contributions only via a contributions holiday (now called a “savings suspension”) under s.102, available after 12 months of membership.

What is the minimum employer contribution?

Under KiwiSaver Act 2006 s.101D, the minimum compulsory employer contribution is 3% of the employee’s gross salary or wages, paid into the employee’s KiwiSaver account.

The 3% is calculated on:

• Salary and wages (including overtime, allowances, holiday pay)
• Bonuses and commissions
• Salary-sacrificed amounts (post-2020 changes)

Employers may choose to contribute more than 3% — some employer agreements specify 4–8%. Above-3% contributions are sometimes used as a recruitment incentive.

What is ESCT?

Employer Superannuation Contribution Tax (ESCT) is the tax the employer pays on the employer contribution (not the employee’s contribution). It is calculated based on the employee’s expected annual salary plus the employer’s contribution.

Effectively, ESCT reduces the net amount of the employer contribution that reaches the employee’s KiwiSaver account. For high earners, the 39% ESCT means a 3% gross employer contribution becomes 1.83% net into the account.

ESCT is paid via the IRD payday filing system as part of regular PAYE returns.

What employee deductions apply?

Under KiwiSaver Act 2006 s.78, KiwiSaver contributions are deducted from the employee’s wages before tax. Employees can choose:

• 3% (default)
• 4%
• 6%
• 8%
• 10%

The employee specifies their rate via Form KS2 when starting employment or by submitting a new KS2 to change rate.

The employer deducts the employee’s contribution and remits it to IRD with the next payday filing.

What is the KS3 information pack?

Employers must give new employees the KS3 KiwiSaver Information Pack within 7 days of starting employment. The pack explains:

• How KiwiSaver works
• Contribution rates and choice
• Opt-out window (days 14–56)
• Provider choice
• The KS2 deduction form

The KS3 is freely downloadable from IRD: https://www.ird.govt.nz/kiwisaver/kiwisaver-employers/new-employees-and-kiwisaver

How are contributions paid?

KiwiSaver contributions (both employee and employer) are remitted to IRD as part of the payday filing process. Steps:

1. Calculate the employee’s KiwiSaver deduction (their chosen rate × gross wages)
2. Calculate the employer’s 3% contribution
3. Calculate ESCT
4. Submit payday filing via myIR (typically within 2 days of payday for digital filers)
5. Pay the total to IRD by the 20th of the following month

IRD distributes contributions to the employee’s KiwiSaver provider on the employer’s behalf.

IRD payday filing: https://www.ird.govt.nz/employing-staff/payday-filing

Which provider do contributions go to?

Each KiwiSaver member chooses (or is allocated to) a KiwiSaver provider — a registered fund manager such as ANZ, ASB, AMP, Mercer, Fisher Funds, etc.

If a new member doesn’t choose a provider:

• They may be allocated to the employer’s chosen scheme (if the employer has one)
• Otherwise, they are randomly allocated to a default provider by IRD

The full list of KiwiSaver providers is at https://www.kiwisaver.govt.nz/.

What about contractors?

KiwiSaver applies to employees only, not independent contractors. The KiwiSaver Act 2006 mirrors the ERA 2000 employee/contractor distinction (s.6 ERA test).

A “contractor” who in substance is an employee (under the Uber NZ (2024) test) may have KiwiSaver entitlements that the employer has unlawfully avoided. This is a material risk in misclassified relationships.

Are casuals included?

Yes. Casual employees are employees for KiwiSaver purposes if they meet the automatic-enrolment criteria. Each new casual engagement triggers a new 14-56 day opt-out window — a practical complication for businesses with rotating casual staff.

What about employees on parental leave?

During paid parental leave (under the Parental Leave and Employment Protection Act 1987), employer KiwiSaver contributions are paused. The employee may continue their own contributions voluntarily through the IRD direct-debit system.

On return to work, the standard contribution regime resumes.

What happens if an employee opts out late?

The opt-out window is days 14 to 56 of starting employment. Late opt-out applications can be submitted to IRD with reasons; IRD may grant a late opt-out where:

• The employer didn’t enrol the employee correctly
• The employee did not receive the KS3 information
• Other exceptional circumstances

After day 56, the employee can suspend contributions via the savings suspension (formerly contributions holiday) under s.102. Suspensions last 3 months to 1 year and can be renewed.

Can an employee request a higher employer contribution?

Yes — through negotiation, not statute. Some employment agreements (particularly in higher-paying industries or for senior roles) provide employer contributions above 3%. The agreement specifies the rate, and the higher rate is contractually binding.

The employer must still pay ESCT on the higher contribution.

What records must the employer keep?

Under KiwiSaver Act 2006 s.123 and Tax Administration Act 1994:

• Employee KS2 forms (deduction rate)
• KS10 opt-out forms (where applicable)
• Payday filing records showing contributions
• Receipt of KS3 information pack acknowledged

Records are kept for 7 years under standard tax record-keeping (Tax Administration Act 1994 s.22).

What are the penalties for non-compliance?

Failing to enrol an employee, failing to deduct contributions, or failing to pay employer contributions can attract:

• IRD recovery of unpaid contributions plus interest
• Penalties under Tax Administration Act 1994 (10% to 150% of underpayment, depending on culpability)
• Personal liability for directors of corporate employers under TAA Sch 7

The IRD Compliance team conducts periodic audits, particularly in industries with high incidence of casual misclassification.

How does KiwiSaver compare internationally?

NZ’s 3% baseline is significantly lower than Australia’s 12%. NZ’s first-home withdrawal feature is unique among comparable schemes.

Practical Compliance Checklist

1. Day one of new employment — provide KS3 information pack within 7 days
2. Day one — obtain KS2 (deduction form) and IR330 (tax code)
3. Verify automatic-enrolment criteria — age, residency, new employment
4. Calculate deductions — employee % + 3% employer + ESCT
5. Submit payday filing to IRD via myIR
6. Pay IRD by 20th of the month following payday
7. Track 14–56 day opt-out window for new employees
8. Provide annual statement to employee (typically through KiwiSaver provider)
9. Update on rate changes — KS2 form when employee changes rate
10. Maintain records for 7 years

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Disclaimer

Legal information, not legal advice. MmowW Scrib🐮 is operated by a licensed Gyoseishoshi (行政書士) office in Japan. We are not New Zealand lawyers or licensed immigration advisers.

Sources

• IRD KiwiSaver: https://www.ird.govt.nz/kiwisaver
• IRD KiwiSaver for employers: https://www.ird.govt.nz/kiwisaver/kiwisaver-employers
• KiwiSaver Act 2006: https://www.legislation.govt.nz/act/public/2006/0040/latest/DLM378372.html
• KiwiSaver hub: https://www.kiwisaver.govt.nz/