Cost of a Baby Calculator

This New Zealand calculator helps expecting parents prepare financially for a new baby, covering both the upfront costs and the change in household income while on parental leave. It estimates the one-off setup costs like a cot, car seat, and pram, the ongoing monthly costs of nappies, food, and childcare, and the income drop during leave, while prompting you to factor in entitlements such as paid parental leave and Best Start. The breakdown separates the upfront and ongoing costs and shows the income gap to plan for, giving parents a realistic picture so they can build a buffer before the baby arrives rather than being caught out by the real cost of the first year.

One-off setup costs

$
$

Ongoing

$

Income on leave

$
$
$0
estimated net cost of the first year
Upfront and ongoing$0
Income drop on leave$0
Less support received$0

The income drop while on leave is often the largest part. Paid parental leave and Best Start reduce the net cost, so include the support you expect to receive. Childcare costs may begin if you return to work. Estimate only, to help you plan and build a buffer.

How it works

The calculator adds your one-off setup costs, your ongoing monthly costs across the year, and the income you lose while on leave, which is your weekly drop times the weeks of reduced income. It then subtracts any support you expect, such as paid parental leave and Best Start, to give a realistic net cost of the first year. Seeing the income drop spelled out usually shows that building a buffer beforehand is the most important step.

Worked example

With $3,000 of gear, $800 of other setup, $400 a month ongoing ($4,800), and a $500 weekly income drop over 26 weeks ($13,000), the gross first-year cost is about $21,600. Subtracting support such as paid parental leave reduces the net figure, but the income gap is clearly the biggest piece to plan for.

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