"Does it even make sense for me to work?" is one of the most common questions new parents ask, and the usual back-of-the-napkin math gets it wrong in both directions. Comparing a salary straight against a daycare bill ignores taxes, the other costs of working, and the long shadow that stepping away casts over retirement and future earnings. This calculator does the honest version.
Why the second income is smaller than it looks
The single biggest surprise is taxes. A second earner's pay isn't taxed from the bottom brackets up; it stacks on top of the household's first income, so every dollar is taxed at your highest marginal rate. Add federal, state, and 7.65% payroll tax and a second income commonly loses 30% to 40% before it reaches your account. Only then do you subtract childcare, and childcare for an infant runs well over $1,000 a month in most of the country, more for multiple children.
The costs beyond daycare
Working isn't free even after childcare. Commuting, work meals, a professional wardrobe, and the takeout and paid help that a two-job household leans on all come out of that same paycheck. For many families these add several hundred dollars a month. Subtract everything and you get your effective hourly wage, the number that actually tells you what your time at work is buying. Seeing it in dollars per hour is often what makes the decision click.
The part the monthly math hides
Even when a job nets close to nothing month to month, leaving still carries a long-term price. You stop contributing to your 401k and forfeit the employer match, which is free money, and those contributions would have compounded for decades. There's also a well-documented career penalty: people who step away tend to return at lower pay and miss years of raises. A job that barely breaks even today can still be the stronger financial move once you count what continues to grow in the background.
Money is only part of it
This is a financial tool, and the financial picture is only one input to a deeply personal decision. The value of a parent at home, your own fulfillment, family stress, and what you want your days to look like all matter and none of them fit in a spreadsheet. The goal here is simply to remove the money guesswork so you can weigh the rest clearly. Run your real numbers above.
Common Questions
How do I decide if it's worth working after paying for daycare?
Compare your take-home pay after taxes against the full cost of working: childcare, commuting, work meals, wardrobe, and convenience spending. What's left is your real net from the job. Most people only compare salary to daycare and forget that a second income is taxed at the household's top marginal rate and that working carries costs beyond childcare. This calculator does the full comparison and also shows the effective hourly wage you're really earning.
Why is my second income taxed so heavily?
A second earner's income stacks on top of the household's first income, so every dollar is taxed at your highest marginal rate, not the low starting brackets. Add federal, state, and 7.65% payroll taxes, and a second income is often taxed at an effective 30% to 40%. That's why the take-home from a second job is smaller than people expect before childcare is even subtracted.
Should I include retirement contributions in the decision?
Yes, and it's the piece most people miss. When you leave the workforce you stop contributing to a 401k and you give up any employer match, which is free money. Those forgone contributions would have compounded for decades. Even if your job nets close to zero in monthly cash after childcare, staying employed can be worth tens of thousands of dollars in retirement savings by the time you reach 65.
What is the career penalty for staying home?
Research consistently finds that a gap in employment lowers future earnings. When people return to work after time out, they often re-enter at a lower salary than if they had stayed, and they miss years of raises and promotions that compound over a career. The monthly cash comparison doesn't capture this, so a job that barely breaks even today can still be the better long-term financial choice.
Is staying home ever the better financial choice?
Sometimes, especially with multiple children in care at once, a long expensive commute, or a modest salary taxed at a high household rate. In those cases a job can net very little or even lose money month to month. But money is only part of the decision. Career continuity, personal fulfillment, and the value of a parent at home are all real and personal. This tool gives you the clearest possible financial picture so the non-financial choice is made with open eyes.
What costs of working should I include?
Beyond childcare, include commuting (gas, parking, tolls, or transit), work meals and coffee, a work wardrobe and dry cleaning, and the convenience spending that a busy dual-income schedule tends to create, like takeout and paid help. These add up to hundreds of dollars a month for many families and meaningfully change the real value of a second income.