Employer KiwiSaver Costs in 2026: Budgeting for 3.5%

If you're an employer in New Zealand, you've likely already marked 1 April 2026 on your financial calendar. That's when the mandatory employer KiwiSaver contribution rate increases from 3% to 3.5% of gross earnings. It's the first increase to the employer match rate since KiwiSaver's minimum contribution requirements were standardized, and it affects every employer with KiwiSaver members on their payroll.

The change might seem incremental at first glance. But when you multiply that 0.5% across your entire workforce, across 12 months, the impact on your operating costs becomes clear. For a business with ten employees earning the median wage, we're talking about an additional $3,000+ annually. For larger employers, the figure scales considerably.

This article breaks down exactly what the 3.5% employer contribution will cost your business in 2026, including some scenarios you might not have considered, like the treatment of 16 and 17-year-old employees.

Let's start with a straightforward example. According to Stats NZ, the median annual income for full-time employees sits around $70,000 as of mid-2025. For an employee earning that amount who is enrolled in KiwiSaver, here's the calculation:

• Current cost (3% employer match): $70,000 × 3% = $2,100 per year
• New cost from April 2026 (3.5% employer match): $70,000 × 3.5% = $2,450 per year
• Annual increase per employee: $350

That $350 works out to roughly $29 per month, or about $13.50 per pay period if you're on a fortnightly payroll cycle. For a single employee, it's a manageable adjustment. But few businesses employ just one person.

If you have 10 employees at that median income level, your total employer KiwiSaver cost jumps from $21,000 to $24,500 annually. That's an extra $3,500 hitting your payroll budget. For a team of 50, the increase is $17,500. For 100 employees, it's $35,000.

The key takeaway: this isn't about one employee or one pay period. It's a recurring annual cost increase that compounds with every person on your team who is enrolled in KiwiSaver.

One area that trips up many employers, particularly in retail, hospitality, and seasonal industries, is the treatment of younger employees. Here's the rule that matters for budgeting purposes:

16 and 17-year-olds are not automatically enrolled in KiwiSaver. However, they can opt in. And if they do opt in, you as the employer are required to make the employer contribution just like you would for any other KiwiSaver member.

This creates a variable cost that depends on employee choice. Let's say you employ five 17-year-olds over the summer, each earning $30,000 annualized (part-time or seasonal). If three of them opt into KiwiSaver:

• KiwiSaver employer contributions for those three (at 3.5%): 3 × ($30,000 × 3.5%) = $3,150 annually
• No contributions required for the two who didn't opt in

The wrinkle: you won't always know ahead of time which younger employees will opt in. Some may opt in mid-year. Others might not opt in at all. This makes budgeting slightly more complex if you have high turnover or seasonal youth employment. A conservative approach is to budget as if all eligible employees under 18 will opt in, then treat any who don't as a minor cost saving rather than a budget surprise in the other direction.

For more detail on how KiwiSaver works for this age group, take a look at our post on KiwiSaver for 16- and 17-year-olds, which covers the opt-in mechanics and what it means for families and young workers.

Let's walk through a more detailed scenario with some realistic variation in income levels. Imagine a small business with 25 employees:

• 10 full-time employees earning $65,000 each
• 8 full-time employees earning $50,000 each
• 5 part-time employees earning $25,000 each
• 2 employees aged 17 earning $20,000 each (one opted into KiwiSaver, one has not)

Total gross payroll: (10 × $65,000) + (8 × $50,000) + (5 × $25,000) + (2 × $20,000) = $1,215,000

Not all of that payroll attracts employer contributions. The one 17-year-old who hasn't opted in does not require an employer contribution. So the KiwiSaver-eligible payroll is $1,195,000.

Employer contributions at 3% (current, through March 2026): $1,195,000 × 3% = $35,850

Employer contributions at 3.5% (from April 2026 onward): $1,195,000 × 3.5% = $41,825

Annual cost increase: $5,975

That's nearly $6,000 more per year, or roughly $500 per month, that this business will pay in employer KiwiSaver contributions starting in April 2026. For context, that's equivalent to about one month's rent for a small office space in many regional centers, or the cost of a part-time administrative role for a few weeks.

Here's some good news: employer KiwiSaver contributions are fully tax-deductible as a business expense. According to Inland Revenue, these contributions are treated the same way as wages for tax purposes, meaning they reduce your taxable income.

If your business operates at the standard 28% company tax rate, that $5,975 annual increase in the 25-employee scenario above effectively costs you:

$5,975 × (1 - 0.28) = $4,302 after tax

That's still a real cost, but it's about 28% lower than the gross figure due to the tax deduction. For sole traders and partnerships taxed at personal rates, the offset varies depending on your marginal tax rate (10.5%, 17.5%, 30%, 33%, or 39%).

This doesn't make the cost disappear, but it does mean the net impact on your bottom line is somewhat less than the raw payroll increase. When budgeting and forecasting, factor in your effective tax rate to understand the true after-tax cost increase.

The April 2026 timing creates a fiscal year split for most New Zealand businesses (which operate on a 1 April to 31 March financial year). Here are some practical steps to prepare:

1. Calculate Your Exact Increase Now

Pull your current payroll data and identify all employees enrolled in KiwiSaver. Multiply their combined gross earnings by 0.5% to get your annual cost increase. Don't forget to include any 16 or 17-year-olds who have opted in.

2. Adjust Your FY2026 Budget

If your financial year runs April to March (standard in NZ), the 3.5% rate applies to the entire FY2026. If your business uses a different fiscal year (e.g., July to June), you'll need to account for a partial-year impact. For an April start, budget the full 3.5% employer contribution from day one of the new fiscal year.

3. Update Payroll Software and Processes

Work with your payroll provider or software platform to ensure the new 3.5% rate is automatically applied from 1 April 2026. Most major payroll systems in New Zealand (Xero, MYOB, PayHero, etc.) will push updates, but it's worth confirming this with your provider in March 2026.

4. Communicate With Your Team

Employees won't see a change to their own KiwiSaver contributions (which remain at their chosen rate: 3%, 4%, 6%, 8%, or 10%). But it's good practice to communicate openly about the change, particularly if you're a smaller business where staff understand the financials. Transparency builds trust.

5. Review Employee Contribution Rates (Optional)

Some employers take this opportunity to encourage employees to review their own contribution rates. While employees' rates don't automatically change, the context of increased retirement saving can be a useful moment to prompt engagement with KiwiSaver settings. Just remember, as an employer, you can't require employees to change their personal contribution rates.

Employer contributions to KiwiSaver are subject to Employer Superannuation Contribution Tax (ESCT). The rate varies depending on each employee's income and is calculated by Inland Revenue based on their salary or wages. As of 2025, ESCT rates range from 10.5% to 39%, mirroring personal income tax brackets.

The 0.5% increase in employer contributions also means a proportional increase in ESCT liability. Using our earlier example of an employee earning $70,000:

• Old employer contribution (3%): $2,100
• ESCT on $2,100 (assuming a 30% rate): $630
• New employer contribution (3.5%): $2,450
• ESCT on $2,450 (at 30%): $735
• Increase in ESCT: $105

This ESCT increase is in addition to the direct contribution increase. So your total cost for that employee rises by $350 in contributions plus $105 in ESCT, totaling $455 annually. Across a larger workforce, these ESCT costs add up and must be included in your budgeting.

Short answer: not legally, and not ethically. Employer KiwiSaver contributions are a legal obligation under the KiwiSaver Act 2006. You cannot:

• Require employees to opt out of KiwiSaver to reduce your costs
• Reduce wages to offset the employer contribution increase
• Refuse to hire employees because they are KiwiSaver members
• Pressure younger employees not to opt in

Attempting any of the above would expose your business to serious employment law and regulatory risk. The employer contribution is a cost of doing business in New Zealand, much like ACC levies or holiday pay entitlements.

What you can do is plan efficiently, ensure you're claiming the tax deduction correctly, and build these costs into your pricing and business model as appropriate. If your business operates on tight margins, the increase might be a catalyst to review operational efficiency, pricing strategies, or service delivery models, but it should never come at the expense of employee entitlements.

It's easy to focus on the cost increase in isolation, but it's worth stepping back to consider the broader context. KiwiSaver has been a significant success story in helping New Zealanders save for retirement. As of 2025, the scheme has over 3 million members and more than $100 billion in funds under management.

The employer contribution is a critical part of that equation. For many employees, particularly those on modest incomes, the employer match represents a substantial boost to their retirement savings. Over a 40-year career, even a 0.5% increase in the employer contribution rate can translate to tens of thousands of dollars more in retirement savings when compounded over time.

From a business perspective, offering KiwiSaver (which is now effectively mandatory for most employers) also serves as a baseline employee benefit. In competitive labor markets, employer contributions to retirement savings are increasingly seen not as an optional perk, but as a standard expectation. The increase to 3.5% simply lifts that baseline slightly higher across the board.

If you're looking for additional resources to help with payroll planning and KiwiSaver compliance, here are some trusted starting points:

• Inland Revenue (IRD): The IRD website has detailed guidance on employer obligations, ESCT, and KiwiSaver compliance.
• Sorted.org.nz: While primarily aimed at individuals, Sorted has tools and calculators that can help you understand KiwiSaver from an employee perspective, which is useful context.
• Your Payroll Provider: Most payroll software companies will provide webinars, guides, or direct support ahead of the April 2026 change. Engage with them early.
• Business Advisors: If your business has an accountant or financial advisor, loop them into your budgeting conversations for FY2026 to ensure the KiwiSaver cost increase is properly integrated into your financial projections.

And if your employees are asking about their own retirement planning in light of the changes, our post on calculating a personal retirement number might be a useful resource to share.

This article is general information only and does not constitute personalized financial advice. For advice tailored to your situation, speak with a licensed Financial Advice Provider. You can find a registered adviser at fma.govt.nz.