What is the break-even salary for a second income with one child in daycare?

At the national-average full-time center cost of $13,128 a year, the break-even second income is $20,750 a year after marginal-rate tax and $5,000 of work costs. The median across all modeled scenarios is $28,750.

How often does the second job genuinely lose money?

In 7.1% of the 10,000 modeled scenarios, concentrated where low second incomes meet high childcare bills. In 2.9% of scenarios, the childcare bill alone exceeds the second income before tax.

Can I reproduce this study?

Yes. The methodology states every input: the draw ranges, the tax tiers, the $5,000 work-cost assumption, the break-even scan, and the fixed seed (20261012).

Original research · Oct 12, 20268 min read

The second-income break-even study

At what salary does the second job stop paying for itself? We ran 10,000 family scenarios through our own calculator engine — varying the second income, the childcare bill, and the tax bite — and priced the exact point where working breaks even. Median answer: $28,750 a year.

7.1%

Share of 10,000 modeled scenarios in which the second income loses money in a single year — after childcare, marginal-rate tax, and $5,000 of work costs. The other 92.9% clear the bar.

Why we ran this

“Does the second job even pay?” is one of the most asked and worst answered questions in family finance. The usual answers are anecdotes: a friend who quit because daycare ate the paycheck, a coworker who insists it always pays. Anecdotes are just scenarios with a sample size of one. So we built the sample size to 10,000 — not by surveying families, but by running the break-even formula across the full realistic range of its inputs, using the same arithmetic our Cost of Raising a Child Calculator applies. The result is a distribution, not an anecdote: where the break-even point sits, how wide the band is, and how often the answer is genuinely “quit.”

Methodology

Each of the 10,000 scenarios draws two numbers independently from uniform ranges chosen to cover the realistic American middle:

Second income: $20,000 to $150,000 a year.
Annual childcare cost (one child): $5,000 to $35,000 a year — from part-time family care at the low end to full-time center care in an expensive metro at the high end. The national average ($13,128, Child Care Aware of America 2024) sits near the lower third of the range.

For each scenario we compute the net annual gain from working:

net = income × (1 − marginal tax rate) − childcare − $5,000

Marginal tax rate is tiered by the second income itself: 12% under $50,000, 22% from $50,000 to $100,000, 24% above — a stated simplification of the federal brackets, since the second income stacks on top of the first.
$5,000 of work costs is a stated assumption: roughly $3,000 of commuting plus $2,000 of work clothes, convenience spending, and the takeout that replaces home cooking.

The break-even income for a scenario is the lowest income at which net reaches zero, found by scanning upward from $1,000 in $250 steps. The simulation uses a fixed random seed, so every figure on this page is reproducible: same seed, same 10,000 draws, same results. Anything a reader can vary — the tax tiers, the $5,000 work cost, the draw ranges — is stated above, which is what makes the study checkable rather than oracular.

What we found

Result	Figure
Scenarios where working loses money (one year)	7.1%
Scenarios where childcare alone exceeds the second income	2.9%
Break-even second income, 25th percentile	$20,250
Break-even second income, median	$28,750
Break-even second income, 75th percentile	$37,000
Scenarios needing more than $50,000 to break even	0.0%

Read the table as a band, not a point. Half of all scenarios break even between $20,250 and $37,000 a year. The median family — median childcare draw, median income draw — needs a $28,750 second income for the job to pay for itself in a single year. And within the modeled ranges, no scenario needs more than $50,000: the break-even ceiling is lower than the discourse suggests.

Two anchor points make the band concrete. At the national-average full-time center cost ($13,128 a year), the break-even second income is $20,750 — barely above a full-time minimum-wage job in most states. At two children in full-time care ($26,256 a year), it rises to $35,750. The second child is what moves the line: one child in care is clearable by almost any full-time job; two children in care is where the subtraction gets serious.

The new insight

The distribution has a shape the anecdotes miss: the break-even band is narrow, but the career-cost tail is wide. In a single year, 92.9% of second incomes clear the bar — the “daycare ate my paycheck” story is real but uncommon, concentrated where low second incomes meet high childcare bills. Yet the families near the line are precisely the ones for whom the invisible cost is largest: a $30,000 earner who quits for five years does not just lose $30,000 a year; they lose the compounding of raises, retirement matches, and promotions off a $30,000 base that never gets to grow. The study’s one-year math says the line is $28,750. The honest reading is that the line is lower than that — because the year you price is never the only year you pay.

Where the model is conservative — and where it is not

Every model leans; here is ours, stated plainly. The $5,000 work cost is a round assumption — remote workers pay far less, long commuters more. The tax tiers ignore state income tax, which pushes break-evens up in high-tax states, and ignore the Child and Dependent Care Credit, which pushes them down. The childcare range tops out at $35,000, so the priciest metros’ nanny market is underrepresented. And the biggest conservatism: the study prices one year, while the real decision spans the six childcare years and the career arc beyond them — the ten-year math in the stay-home analysis is the necessary companion to these figures.

What the model does not do is flatter either side. It does not count the employer health plan, the 401(k) match, or the Social Security credits on the working side; it does not count the value of parental care or household production on the staying-home side. Both omissions are real, both are large, and they roughly rhyme — which is why the break-even band is a starting point for the decision, not the decision.

How to use this

Find your childcare number — your actual quote, not the national average — and locate it in the band: under ~$13,000 a year, almost any full-time second income clears; near $26,000 (two in full-time care), the line sits around $35,750; above that, run your own subtraction with your marginal rate. Then, before deciding, price the gap and not just the year: five years out of the workforce costs more than five years of daycare in nearly every scenario we can construct. The calculator prices your eighteen-year baseline; this study prices the decision inside it.

Reproduce it

All 10,000 scenarios were generated with a fixed seed (20261012), uniform draws over the ranges above, and the formula stated in Methodology. Reimplement the three inputs — income range, childcare range, tiered tax — and the break-even scan, and you will recover the table within rounding. If you find a material error in the method, tell us: the study gets corrected and re-run, and the correction gets logged on this page.

Sources

Child Care Aware of America, “Child Care in America: 2024 Affordability Analysis” — $13,128/yr national average anchoring the childcare draw range.
Care.com 2024 Cost of Care Survey — weekly rate tables informing the $35,000 top of the childcare range.
IRS 2026 federal income tax brackets — informing the 12%/22%/24% marginal-rate tiers (stated simplification).
Daily Micro Tools simulation, seed 20261012 — all figures on this page.

Posted at the bottom of the page

What is the break-even salary for a second income with one child in daycare?: At the national-average full-time center cost ($13,128/year), the break-even second income is $20,750 a year after marginal-rate tax and $5,000 of work costs. Across all modeled scenarios the median break-even is $28,750.
How often does the second job genuinely lose money?: In 7.1% of the 10,000 modeled scenarios — concentrated where low second incomes meet high childcare bills. In 2.9% of scenarios, the childcare bill alone exceeds the second income before tax.
Can I reproduce this study?: Yes. The methodology section states every input: the draw ranges, the tax tiers, the $5,000 work-cost assumption, the break-even scan, and the fixed seed (20261012). Reimplement it and you recover the table.