Skip to the calculator
Back to Work Calculator

2026-27 estimate

Is 5 days a week worth it with childcare?

A calculator can make 5 days look "best" because the total rises from 4 days. That can still be the wrong question. What matters is what the fifth day adds on its own, next to the four you're already working. For plenty of families the honest answer is less than you'd think. Sometimes it's nothing. Sometimes, like here, it's a genuine loss.

For Aiden and Sienna, no: day 5 costs their household $72 a week after tax, HELP, the levy surcharge and childcare. Many families will see a different result, so compare your own day 4 and day 5 positions in the calculator.

Aiden and Sienna, Sydney: day 4 against day 5

Aiden and Sienna live in Sydney with three kids: two still at daycare, and an eldest who started school this year. Aiden earns $130,000 full-time equivalent and carries a HELP debt. Sienna earns $170,000 over five days, debt-free. All three kids need care on the days Aiden works, at NSW's average fee of $158 a day each, and the family doesn't have private hospital cover.

Aiden and Sienna's fifth day doesn't just pay less than the fourth; it costs the household $313. Here's the month either side of it: at 4 days, Aiden's pay lands ($6,683), Sienna's pay lands ($10,219), his HELP repayment, the Medicare Levy Surcharge and $3,421 of childcare for three kids come out, and the household keeps $12,419. Add the fifth day and his pay lands $1,473 more, but his HELP repayment and the surcharge both grow, and childcare takes $1,347 more, enough to wipe out the gain and then some. That's a real loss of about $72 a week for a full extra day's work; yours to judge.

Here's the same story for every day of Aiden's week:

Aiden's family, day by day

Gross pay, CCS rate, childcare paid after subsidy and what each day adds for Aiden's family, computed by the same engine as the calculator, from the 2026-27 rules.
DaysGross payCCS rateChildcare you pay (after subsidy)That day adds$/hr
0 (baseline)$073.7%$0n/an/a
1$26,00068.5%$6,995+$17,495$44.27
2$52,00063.3%$15,799+$7,466$18.89
3$78,00058.1%$27,243+$3,446$8.72
4$104,00052.9%$41,048-$2,010-$5.09
5$130,00047.7%$57,215-$3,758-$9.51

Open this exact scenario in the calculator to swap in your own salaries, kids and state and see your own day 4 vs day 5.

Why the fifth day loses money, not just less of it

That's not a fluke of Aiden and Sienna's particular numbers: it's how the maths works for anyone once enough is stacked on top of it. In Aiden and Sienna's example, total pay is higher at 5 days than at 4. But the fifth day's own contribution is a different question. That day's gross pay pushes more of your income into a higher tax bracket, and if you have a debt, your compulsory HELP repayment grows with it. Family income rises too, which shrinks the Child Care Subsidy on every day of care you already use, not just the new one. Then there's one more day of childcare fees for every child. Stack all of that on an already-full week, and the fifth day can cost more than it earns.

The verdict on day 5 for this family

Look at the family net column, not just the hourly rate: it peaks at day 3, barely ahead of day 2 since day 3 itself adds so little, then falls for both day 4 and day 5. Working the full five days leaves this family $5,768 worse off across the year than stopping at day 3. Day 2 is the last day that clearly earns a worthwhile rate, at $18.89 an hour; day 3 already falls to just $8.72. It's the same "often 3 days" pattern showing up across this site: for Aiden and Sienna it just arrives earlier, and bites harder, than it does for other families.

Three things are driving it here. Aiden's HELP repayment lands on top of income tax. The family has no private hospital cover, so the Medicare Levy Surcharge applies once their combined income clears its threshold. And with three kids in care, every extra day carries three childcare payments instead of one, all while the subsidy rate keeps tapering down on every one of those fees as family income rises. Change any one of those (private cover, no HELP debt, fewer kids) and the fifth day looks different. That's exactly why the calculator above uses your own numbers, not a generic table.

For a family whose next step is still positive but needs a closer look, read our is 4 days worth it guide. If a HELP debt is part of your picture, the HELP and CCS guide shows how that separate repayment can change an extra day.

For the mechanics behind every column in that table (the tax brackets, the HELP bands, the CCS taper), see the methodology page, linked through to the ATO and Services Australia pages behind each rate.

Questions about day 5

How can an extra day of work actually lose money?

It's not that the employer pays you less for day 5: your payslip rate never changes. It's that the same extra gross pay is taxed at your top marginal rate, can trigger a HELP repayment and the Medicare Levy Surcharge, and lowers your Child Care Subsidy rate across every day of care you already use, all at once. Add a full day's childcare payment for every child on top of that stack, and the total can exceed the extra pay.

Source: Services Australia: how income affects CCS

Does more kids in care make day 5 worse?

Yes, directly. Every additional child in care on your workdays adds its own childcare payment to that day's tally, and the subsidy rate for all of them falls together as family income rises with the extra day's pay. Two or three kids in care makes it far more likely that an extra day turns negative than one child does.

Source: Services Australia: CCS rates and caps

What if we don't have a HELP debt or we have private health cover?

Removing either one usually helps day 5's number: a HELP repayment and the Medicare Levy Surcharge are both extra deductions stacked on top of income tax, not the main driver on their own. Try toggling them off for Aiden and Sienna in the calculator above to see how much of that cost each one explains for this family, then do the same with your own numbers.

Source: ATO: Medicare Levy Surcharge

Sources