Maternity Leave Financial Planning NZ: The Costs Most Women Don't Calculate
Most maternity leave financial planning starts and ends with one question: can we afford the income drop for 26 weeks?
That's the wrong question. Or rather, it's only the first question. The income gap is the visible part, and because it's visible, most women plan for it. What they don't plan for are the costs that don't show up in a bank account until years later.
There are three layers to the financial picture of maternity leave:
Layer One: The Cash Flow Gap (everyone plans this)
Layer Two: The Medium-Term Costs (this surprises people)
Layer Three: The Long-Term Picture (nobody talks about this)
Most planning stops at Layer One.
Layer One: The Cash Flow Gap (The Part Everyone Plans For)
New Zealand's government Parental Leave Payments provide up to 26 weeks of paid leave, capped at $788.66 per week gross (as at 1 July 2025 to 30 June 2026). For many FoundHer readers, that cap sits well below your actual weekly take-home. The government payment replaces a portion of your income, not all of it. How significant that gap is depends entirely on where your salary sits relative to the cap.
What the gap actually looks like
At $70,000 annually ($1,346 per week), the government pays $788.66, leaving a $557 weekly gap — or $14,491 over 26 weeks.
At $95,000 annually ($1,827 per week), the government pays $788.66, leaving a $1,038 weekly gap — or $26,997 over 26 weeks.
At $130,000 annually ($2,500 per week), the government pays $788.66, leaving a $1,711 weekly gap — or $44,495 over 26 weeks.
The numbers above assume no employer top-up. Which brings us to what actually determines whether this is manageable.
What determines whether this is manageable
Employer top-up policy. Some employers supplement government payments to a percentage of your salary for a defined period. This changes everything. Know your policy before you calculate anything else — it's the single biggest variable in your leave cash flow. If your employer provides an 80% top-up for 12 weeks, that $95,000 salary gap drops from $26,997 to approximately $13,000. If they provide full replacement for 16 weeks, the gap compresses further.
Partner income and structure. If you're in a dual-income household, the question isn't "can we afford my income pause" — it's "what does our household cash flow look like on reduced income, and for how long?" That's a different calculation, and it deserves its own spreadsheet.
A personal expenses buffer that's actually personal. Three to six months of your own expenses, not household expenses, gives you decision-making flexibility and something less tangible but equally important: financial autonomy during a period when a lot of other things feel uncertain.
This buffer isn't just for bills. It's for the things that matter to you without requiring a conversation about whether they're justified. Getting your hair done. A gym membership. Coffee with a friend. The things that feel small but quietly signal to you that you haven't disappeared into the role. Financial planning that ignores the human dimension of leave isn't complete planning.
This layer is plannable. Most women with financial sophistication get here. The next two layers are where the gaps appear.
Layer Two: The Medium-Term Costs (The Part That Surprises People)
KiwiSaver during leave
While on paid parental leave, you can pause your own KiwiSaver contributions, and many women do, because cash flow is tight. What's important to understand is that from 1 July 2024, if you choose to have KiwiSaver deductions from your paid parental leave payments, Inland Revenue also contributes 3% as an employer contribution — and this will increase to 3.5% from 1 April 2026, then to 4% from 1 April 2028.
What this means in practice: if you opt to continue your employee contributions during your 26-week parental leave payment period, the government makes both the employee deduction AND the equivalent employer contribution. If you pause your own contributions, neither happens.
Beyond that 26-week window, if you've paused and your leave extends, contributions stop altogether.
The numbers on a pause
Let's say you're earning $95,000 and contributing 3% (rising to 3.5% from 1 April 2026). A 26-week contribution pause at 3% costs $2,738 in missed employee contributions, plus $2,738 in missed employer contributions — a total of $5,476 not entering your KiwiSaver during paid leave.
If the pause extends to a full year (not uncommon when you take unpaid leave beyond the paid 26 weeks), that becomes approximately $10,950 in total missed contributions.
At 5% annual returns over 25 years, that $10,950 pause compounds to approximately $37,100 in foregone retirement savings. Not from the missed contributions alone — from the lost compound growth on contributions you didn't make.
When maintaining your own contributions makes sense
Your cash flow buffer covers the difference, and you're in a growth fund where time in market matters most. You want to keep the government's employer contribution flowing. You're planning to extend leave beyond 26 weeks unpaid and want to maintain the habit.
When pausing makes sense
Cash flow is genuinely constrained, and you have a specific plan to increase contributions in the 12 months post-return to compensate. You're prioritizing building a larger cash buffer for the uncertainty of early parenthood.
The key word there is plan. The pause itself isn't the problem. The pause that becomes permanent by inertia is.
Insurance gaps
Having a baby is one of the clearest triggers for an insurance review, and it's one that often doesn't happen until something goes wrong.
Your income, your dependants, your financial obligations, and your relationship structure have all changed. The cover you had in place before may no longer reflect the life you're now responsible for. There may be gaps. There may also be new cover worth considering that wasn't relevant before.
This isn't a conversation to have with Google. It's a conversation to have with your financial adviser, ideally before you go on leave, not after. A new baby changes the insurance picture in ways that are specific to your situation: your policy terms, your income structure, your partner's cover, and what would actually happen financially if something went wrong during a period when you're already on reduced income.
Book the review. It's one of the highest-value hours you'll spend during this season.
The career re-entry negotiation
It's not unusual to hear, when women return from parental leave: I felt like I was starting again.
Not because the skills weren't there. But because the environment had moved, the relationships had shifted, and somehow the months spent managing sleep deprivation, developmental milestones, and the logistics of keeping a small human alive — skills that would read impressively on any leadership CV — counted for nothing professionally.
That gap between what you actually developed and what the workplace recognises is real, and it has financial consequences. A typical 2-3% annual salary increase over 12-18 months compounds. If you left at $95,000 and colleagues moved to $98,000-$100,000 during your absence, returning at your pre-leave rate means you're already behind — and negotiating from a weaker anchoring point.
A return-to-work conversation is worth preparing for, not just showing up to.
Know what the market rate for your role is before you walk back in. Know whether a salary review at re-entry is something you're going to ask for. Know what flexible working arrangement you want — and get it agreed, not assumed.
Layer Three: The Long-Term Picture (The Part Nobody Talks About)
Relationship property and a new child
A baby changes the legal and financial architecture of a relationship in ways that often aren't considered until much later.
Under the Property (Relationships) Act 1976, a child of the relationship can be a relevant factor in how property is treated, and this may change the picture even for couples who haven't yet reached the three-year relationship threshold typically associated with relationship property rights.
What this means practically: if you and your partner don't have a contracting out agreement, the arrival of a child may bring forward the conversation about whether you need one. Understanding what the default legal position is, and deciding together whether you want different terms, is a conversation that's easier to have when things are good than when they're not.
This isn't a pessimistic framing. It's a clarity framing. Obtain legal advice from a family lawyer who can walk you through what this means for your specific situation.
The Question Worth Asking Now
What would your financial picture look like at 45 if the decisions you make during this leave were deliberate rather than default?
The cash flow question is solvable. The KiwiSaver question is plannable. The insurance review is bookable. The re-entry conversation is preparable. None of them are automatic, but all of them are within reach before you go on leave, not after.
If you're navigating leave planning, KiwiSaver contribution strategy during a career pause, or the insurance and re-entry questions most planning doesn't reach, a Clarity Call can help map what's specific to your timeline and situation.
Frequently Asked Questions
Should I pause my KiwiSaver contributions during parental leave?
It depends on your cash flow and fund type. If you're in a growth fund and your cash flow buffer covers the contribution, maintaining contributions keeps you in the market during growth years. From 1 July 2024, if you opt to have KiwiSaver deducted from your parental leave payments, Inland Revenue also makes the employer contribution (3% currently, rising to 3.5% from 1 April 2026). If cash flow is genuinely constrained, pause but set a specific plan to increase contributions in the 12 months post-return to compensate. The pause itself isn't the problem; the pause that becomes permanent by inertia is.
Does my employer have to keep contributing to my KiwiSaver while I'm on parental leave?
If you receive government-paid parental leave and choose to have KiwiSaver contributions deducted, Inland Revenue makes the employer contribution during your parental leave payment period (up to 26 weeks). Your employer isn't required to contribute during this time — the government steps in. Beyond 26 weeks, if you extend leave unpaid, contributions stop unless you make voluntary contributions directly to your provider.
When should I review my insurance after having a baby?
Before you go on leave, not after. A new baby changes your income, dependants, financial obligations, and relationship structure. The cover you had before may no longer match the life you're responsible for now. Book the review with your financial adviser while the policy terms, income structure, and what would happen if something went wrong are fresh and adjustable.
How do I negotiate salary when returning from parental leave?
Know the market rate for your role before you walk back in. Colleagues may have received incremental increases during your absence. A return-to-work conversation is worth preparing for — know whether you're asking for a salary review at re-entry, and get any flexible working arrangement agreed in writing, not assumed.
Does having a baby change relationship property rights in New Zealand?
Under the Property (Relationships) Act 1976, a child of the relationship can be a relevant factor in how property is treated, potentially changing the picture even before the standard three-year cohabitation threshold for de facto couples. If you don't have a contracting out agreement, the arrival of a child may bring forward that conversation. Legal advice from a family lawyer can clarify what this means for your specific situation.
Disclaimer: This article provides general information only and does not constitute financial advice. Your personal circumstances, goals, and timeline are unique. FoundHer is a licensed Financial Advice Provider (FSP 1007525). For advice specific to your situation, book a Clarity Call.