When does a nanny become cheaper than daycare?

Typically at 2 kids. A nanny at $22–$25/hour for 45 hours/week runs $55,000–$65,000 all-in — slightly more than two daycare spots in a mid-cost market ($1,500/mo each = $36,000/year for the first child, a bit less for the second). For three children, a nanny is almost always the lower per-child cost.

What are the employer taxes for a nanny?

As a household employer you're responsible for 7.65% FICA (Social Security + Medicare) on the employee side plus a matching 7.65% on the employer side, plus federal unemployment tax (~0.6% on the first $7,000), plus state unemployment tax (0.5%–6% depending on state). Total employer-side burden is typically 9–10% of wages.

Is paying a nanny 'off the books' actually cheaper?

It's illegal and it's often expensive in the end. IRS audits of household employers produce back taxes plus penalties that dwarf the savings. Your nanny also has no Social Security credit, no unemployment protection, no documented work history, and can be exposed to legal liability alongside you. Payroll services like HomePay, Poppins Payroll, and GTM handle compliance for ~$50–$75/month.

What's a nanny share and is it worth it?

Two families split a single nanny. Each family pays $15–$22/hour (versus $22–$32 solo). Works best when kids are within ~2 years of age, families have compatible parenting styles, and one home serves as primary base. Mostly eliminates the nanny's financial advantage over daycare but keeps the consistency benefit.

How do the tax credits differ for a nanny vs. daycare?

Both qualify for the Dependent Care FSA ($5,000 pre-tax) and the Child and Dependent Care Credit. For a nanny, you must issue a W-2 and report to your accountant. Daycare only requires the provider's tax ID on your return. Net tax benefit is similar; the paperwork for a nanny is meaningfully higher.

Nanny vs Daycare Calculator | True Cost Including Taxes

The real cost comparison nobody wants to itemize

Daycare and a nanny are not comparable just on hourly rate. A nanny costs you the hourly wage plus roughly 9–10% in employer-side payroll taxes, plus vacation and guaranteed hours, plus holiday bonuses, plus often a contribution to health insurance or PTO. Daycare costs you a flat monthly fee and very little else.

This calculator models both sides fully — hourly rate × hours × weeks + overtime + bonus + employer taxes + benefits for the nanny, against the daycare monthly cost × months × children. The number below tells you which is actually cheaper for yourfamily. For 1 child, daycare almost always wins. For 2, it's close. For 3, a nanny usually wins on cost alone.

The nanny total you often don't see advertised

Hourly wage: $20–$35/hour depending on market.
Overtime: 1.5× rate after 40 hours/week is federal minimum.
Guaranteed hours: standard contracts promise pay for 40–45 hours/week regardless of actual work hours.
Paid time off: 10–15 PTO days + 6–10 federal holidays typical.
Sick days: 5–8 days/year in most modern contracts.
Year-end bonus: 1–2 weeks' pay is common, though not universal.
Employer payroll taxes: ~9% of wages.
Payroll service: $45–$75/month.
Optional health insurance stipend: $100–$400/month at competitive levels.

The advertised $24/hour is closer to an all-in $31/hour after these additions. On 45 hours/week × 52 weeks, that's roughly $72,000/year — a meaningful number for a household to absorb.

Daycare total costs (nominally simpler)

Monthly tuition: $800–$3,500 depending on region and age.
Registration fee: $100–$400 one-time.
Supplies: $150–$400/year (diapers, wipes, extra clothing).
Activity fees: field trips, photos, parties.
Annual raises: 3–7% per year, commonly announced in January.

What each option actually buys you beyond math

Nanny advantages

Care happens at home — no morning rush, no drop-off illness cycle.
1:1 (or small-ratio) attention.
Flexibility for sick days and non-standard hours.
No "daycare illness months" — kids stay healthier.
Household help (laundry, kid food prep) often included.
Consistent caregiver builds a deeper relationship.

Daycare advantages

Structured curriculum and early education.
Peer socialization from early months.
Backup coverage when a staff member is sick — no single-point-of-failure.
Lower cost for 1 kid.
No employer responsibilities, payroll, or HR.
Consistent hours, clear policies, formal feedback.

Tax setup for a nanny

Get an EIN (Employer Identification Number) from the IRS. Free online application.
Register as a household employerwith your state's tax authority and unemployment office.
Verify nanny's work eligibility with Form I-9 on day one.
Sign a formal contract. Include hourly rate, guaranteed hours, PTO, holidays, responsibilities, confidentiality.
Run payroll. Use a service like HomePay (Care.com), GTM, Poppins Payroll, or SurePayroll. $45–$75/month.
Issue W-2 by January 31 each year. File Schedule H with your tax return.

Common hybrid setups

Nanny share: two families, one caregiver. Reduces cost by 30–40% per family.
Au pair: a young international caregiver living in your home. All-in cost of $25K–$30K/year through an approved agency. Pros: cheaper. Cons: housing needed, cultural learning curve, 45-hour/week cap.
Daycare + part-time nanny: daycare 3 days + nanny 2 days balances cost, socialization, and flexibility.
Part-time nanny + remote-work parent: nanny covers the intense hours, parent covers around the edges.

Questions to ask before choosing

How many kids will be in care now, and how many over the next 3 years?
How flexible are our work hours? Can we leave at 5:00 sharp for daycare pickup?
Who backs us up when the primary caregiver is sick?
Are we comfortable being small-business employers?
What's our backup plan for a 2-week illness or a nanny resigning?
Does our neighborhood have 2–3 quality daycares or just one?

Related tools

Daycare cost calculator — detailed state-level daycare pricing.
Baby cost first year — where care fits in the full year-one picture.
Family budget planner — make sure the chosen option fits the budget.

Nanny vs. daycare calculator

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