Cost of Being a Stay-at-Home Parent Calculator
Thirty years of lost wages, lost raises, and lost retirement, minus the childcare you never pay for.
By Jessica Winkler · Published by Digital Simplicity LLC · Last updated September 16, 2026
Method
How this is calculated
Every figure is in today's dollars. Inflation is stripped out of both sides, so a number thirty years out means what it means now.
The calculation runs two salary paths and subtracts one from the other.
Path one: you don't leave. Your salary grows at 1.14% a year above inflation. That rate is the Social Security Trustees' long-range assumption for real growth in average U.S. wages, alternative II, 2026 report.
Path two: you leave. You earn nothing during the break. When you return, you come back at a permanent discount to where the first path would have put you — 4% for each year out, capped at 20%. From there your salary resumes growing at the same 1.14%. The discount never comes back.
The difference between those two paths, across every remaining working year to 65, is the number.
Lost wages is your current salary times the years you're out. That's the number most people already have in their head, and it's the smallest of the three.
Lost wage growth is everything the second path never earns after you return — the permanent discount, compounding against a salary that would otherwise have kept climbing. On most inputs this line is larger than lost wages.
Lost retirement is 12.1% of every dollar in the first two lines, invested at 4% a year above inflation until 65. The 12.1% is the average combined employee and employer contribution rate in Vanguard's 2026 How America Saves, covering roughly five million 401(k) participants. The 4% real return is deliberately below the long-run historical average for a stock-heavy portfolio, and Vanguard's own December 2025 capital markets model puts expected 10-year U.S. equity returns at 3.9% to 5.9% nominal.
Childcare avoided is your input, held flat in today's dollars, times the length of the break. It's subtracted from the total to produce the net line.
Sources
- Real wage growth: Social Security Administration, The Long-Range Economic Assumptions for the 2026 Trustees Report, June 9 2026. Alternative II ultimate real growth in the average OASDI covered wage: 1.14%.
- Re-entry wage penalty: Institute for Fiscal Studies, The Gender Wage Gap (2016) — roughly 2% lower hourly wages per year out, rising to about 4% for women with A-level-equivalent or higher qualifications. The higher figure is used. Corroborating U.S. evidence: Rose and Hartmann, Still a Man's Labor Market (Institute for Women's Policy Research, 2018), which found women who took a single year out earned 39% less annually across a fifteen-year window than women who worked all fifteen.
- Retirement contribution rate: Vanguard, How America Saves 2026, June 2026. Average employee deferral 7.6%, average employer contribution 4.7%, combined 12.1%.
- Return assumption: Vanguard Capital Markets Model, December 31 2025 running.
- Structural approach adapted from Madowitz, Rowell and Hamm, Calculating the Hidden Cost of Interrupting a Career for Child Care (Center for American Progress, 2016). The three-part breakdown is theirs. The assumptions above are not — CAP's wage model is fitted to NLSY79 data running through 2012.
The total
How much money do you lose staying home with kids?
Two to four times your annual salary, for every year you're out.
Three separate losses make up that range, and only one of them is the paycheck. On a $60,000 salary with a three-year break starting at 30, the tool returns $619,251. Lost wages account for $180,000.
The other $439,251 is the part nobody subtracts.
Lost wage growth is the largest single line at $287,775. You come back below the salary path you were on and you stay below it for the rest of your career. Lost retirement adds $151,476 — contributions and employer match that never happened, and the thirty-five years of compounding they never got.
The arithmetic people run in their heads catches the first number. It misses 71% of the total.
Re-entry
What a career break costs when you go back
Re-entry is where the loss gets locked in.
The calculator applies a permanent 4% pay reduction for every year out, capped at 20% after five years. Three years out means coming back 12% below where you'd have been, and staying 12% below. The gap doesn't close as you build experience again, because everyone who stayed built the same years.
Age at return moves the total more than anything else you can enter. The same $60,000 salary and the same three-year break costs $619,251 at 30 and $330,351 at 50. Nothing about the break changed. There were twenty fewer years left for the penalty to run against.
That 4% is an average across occupations, not a forecast for your job. A lapsed nursing license or a software stack that turned over twice while you were out will cost more than the average says.
The net line
Is it cheaper to stay home or pay for childcare?
Almost never, and it isn't close.
The net line subtracts the childcare you skip from the total cost of leaving. In the default example, three years at $2,500 a month comes to $90,000 against $619,251. For those two to cancel out, childcare would have to run $17,201 a month.
The math does flip. It just doesn't flip where people expect. Expensive childcare isn't what does it — a low salary and a late break together are. Someone earning $20,000 who takes a year off at 50 breaks even at $3,213 a month, which is an ordinary price for one infant slot. At 45 on $25,000, it's $4,734. Fewer working years left leaves less room for the penalty to compound, and a smaller salary leaves less to lose in the first place.
Before 40, on any salary above $40,000, breakeven childcare starts around $8,500 a month and climbs from there.
Compounding
How a career break affects your retirement
$151,476 on the default inputs. About a quarter of the total.
That isn't the contributions you skipped while you were out. It's those, plus the contributions on every raise you didn't get afterward, all of it sitting outside the market until 65 instead of compounding inside it.
The calculator uses 12.1% of salary — 7.6% from you and 4.7% from an employer — the combined average across roughly five million 401(k) participants in Vanguard's 2026 data. It grows at 4% a year above inflation, a rate set below the long-run historical average rather than at it.
Social Security is a second retirement loss and this tool doesn't model it. Benefits are calculated on your highest 35 years of earnings, and a year out enters that average as a zero. The real number is higher than the screen shows.
Limits
What this calculator doesn't include
- Social Security. Benefits are calculated on your highest 35 years of earnings. Years out enter that average as zeros, and for lower earners the formula replaces a larger share of income, which makes the loss proportionally bigger. Modeling it properly requires a full earnings history. This tool doesn't attempt it, so the real lifetime number is higher than what you see here.
- Your field. A three-year gap costs a nurse and a software engineer different amounts. The 4% figure is an average across occupations. If your field moves fast or requires current licensure, it's low.
- Part-time and phased returns. The tool models a full stop and a full return. Going back at 20 hours, or stepping back without leaving, produces a different and usually smaller number that this doesn't estimate.
- Employer health coverage. Not counted on either side. If the leaving parent carries the family's insurance, the cost of the break is meaningfully higher than shown.
- Everything that isn't money. The calculation has nothing to say about what the years are worth. That part isn't arithmetic.
Questions
Frequently asked questions
Do stay-at-home moms get Social Security?
Not on your own record unless you've already earned 40 work credits, which takes about ten years of employment. A spousal benefit is separate and doesn't require them: up to 50% of your spouse's benefit at their full retirement age, and up to 100% as a survivor. A divorce doesn't end it if the marriage lasted ten years. Years at home still enter the 35-year average behind your own benefit as zeros, which is the loss this calculator leaves out.
How hard is it to get back to work after a long career break?
Expect a permanent pay cut around 4% for each year out, capped near 20% at five years. How recent your last role is matters more to a hiring manager than how long the gap ran. That's why a contract project, a few part-time months, or anything that puts a current date on a résumé changes the conversation more than the calendar does. The penalty is permanent either way: your salary resumes growing at the normal rate, from a lower starting point.
Do dads lose more money taking time off to care for a child?
Usually yes, in dollars — higher average male salaries make an identical break more expensive, and the wage penalty for stepping out isn't smaller for fathers. Employers tend to read a caregiving gap as less expected from a man, which surfaces as slower promotion rather than a visible pay cut. This calculator applies the same 4% to both parents because no reliable separate figure exists to split them. If you're a father, the output is not being generous with you.
Should I go back part time after maternity leave?
Yes, in almost every case part-time beats a full stop, because childcare hours fall faster than income does. The thresholds decide how much better. Employer health coverage generally attaches at 30 hours a week. Since 2025, working 500 hours a year for two straight years earns you the right to contribute to a 401(k), but not to receive the employer match — that usually still takes 1,000 hours. Twenty hours a week clears both. Ten clears neither.
Is it better to be a stay-at-home mom or work?
Financially, working wins on nearly every input here — a break costs two to four times annual salary per year out. The honest answer is often neither one. What we ran for a few years was a part-time nanny plus grandparents, which was real help and also temporary, the way family help always turns out to be. Neither of us stopping work entirely was ever financially on the table. Shared nannies, offset schedules, and one parent stepping back partway are all third structures, and finding one requires knowing the numbers first.
How long can you be a stay-at-home mom and still go back to work?
There's no cutoff, and the penalty stops growing at five years — this model caps it at 20%. Length isn't the expensive variable. Age at return is. A three-year break on a $60,000 salary costs $619,251 starting at 30 and $330,351 starting at 50, because the later break has twenty fewer years to compound against. A longer break taken later can cost less than a shorter one taken early.
What is a stay-at-home mom worth in salary?
No — that's a replacement-value question, not this page's. This calculator measures what a career break costs you, not what your work would cost to replace. Run your own numbers on the Stay-at-Home Mom Replacement Value Calculator, personalized to your hours, your kids' ages, and your area's wages.
Does being a stay-at-home parent save money?
No, for most families — the childcare you skip is smaller than the wages, raises, and retirement you give up. On the default inputs it would take $17,201 a month in childcare for the two to cancel out. It flips only on a low salary with a late break. Childcare is prohibitively expensive, most families get no meaningful help paying for it, and it will be the largest line in your budget for years. It's also a season, and it ends. If you aren't spending money on your kids, what were you saving it for.
Related
The monthly version of this question
Thirty years is one way to see it. The month in front of you is another, and the two can point in opposite directions — a month that nets almost nothing still sits inside the number above.
What a second income is worth after childcare, taxes and the commute runs the monthly version.
If the answer here is no, the question usually isn't work or don't. It's what the care looks like — part-time hours, a shared nanny, grandparents covering two days. Whether a nanny or daycare costs less once you have more than one child is a different calculation, and household payroll taxes are part of it.
Neither of those is what everything you do at home would cost to replace instead of give up. What replacing everything you do would actually cost runs that math, role by role, at your own local wages.