Finding reliable childcare is one of the biggest decisions a parent makes. You'll face two main pathways: working through an established nanny agency or hiring someone privately, and each route comes with distinct trade-offs in cost, convenience, and peace of mind.
Agency Nannies: Structure and Safety
Nanny agencies handle the heavy lifting of vetting, background checks, and ongoing support. When you hire through an agency, they typically screen candidates, verify references, conduct interviews, and manage payroll and tax documentation. This means you're getting a vetted professional from day one—not someone found through a friend of a friend on social media.
The cost reflects this service layer. Agencies generally charge placement fees ranging from $800 to $3,500, plus ongoing commission (often 10–15% of the nanny's annual salary). If you're paying a nanny $50,000 per year, expect to pay an extra $5,000–$7,500 annually to the agency. Full-time nanny salaries typically range from $40,000 to $70,000 depending on your location and the nanny's experience.
Agencies also provide replacement support if your regular nanny calls in sick or leaves unexpectedly. That safety net is genuinely valuable when you need to be at work.
Private Hire: Flexibility and Lower Upfront Costs
Hiring privately means you skip the agency fee entirely and negotiate directly with the nanny. You'll pay only the nanny's salary—no middleman commission. This can save you $5,000–$10,000 per year, depending on hours and location.
The trade-off is doing the legwork yourself:
- Recruiting: Posting to care platforms like Care.com, word-of-mouth, or local parent groups
- Vetting: Running background checks (DIY services cost $30–$100), calling references, and conducting multiple interviews
- Payroll: Managing taxes, social security contributions, and employment documentation (or hiring a payroll service for $50–$150 monthly)
- Coverage: Finding backup childcare if your nanny gets sick or leaves without notice
Private hiring typically takes 4–8 weeks from posting to first day of work, compared to 2–4 weeks through an agency.
Comparing Key Factors
| Factor | Agency | Private | |--------|--------|---------| | Placement fee | $800–$3,500 | $0 | | Ongoing cost | +10–15% commission | None | | Recruitment time | 2–4 weeks | 4–8 weeks | | Backup nanny | Usually available | You arrange | | Background vetting | Agency handles | You arrange | | Payroll support | Often included | You manage or hire service |
Hidden Costs to Factor In
Whichever path you choose, budget for these:
- Tax and payroll: If you hire privately, payroll services run $50–$150 monthly, or DIY if you're comfortable with IRS paperwork
- Sick days and vacation: Full-time nannies typically get 5–10 paid days off annually
- Seasonal childcare gaps: Summer breaks, school holidays, or unexpected closures require backup plans
- Equipment and supplies: Cribs, car seats, strollers, and toys (split responsibility varies by family and agency agreement)
Which Option Is Right for You?
Choose an agency if:
- You value peace of mind and don't want to recruit or vet
- You need backup childcare availability
- You're uncomfortable handling payroll and tax filings
- You're hiring for the first time and want professional guidance
Choose private hire if:
- You have a strong referral or know someone trustworthy
- You're willing to spend time recruiting and conducting interviews
- You're comfortable managing payroll (or hiring a service)
- Cost savings matter more than convenience
Platforms like Mercoly help you compare both agency and private household managers side by side, so you can see local options, reviews, and pricing without hunting across multiple sites.
Frequently Asked Questions
Q: Do I need to put a private nanny on a formal employment contract? Yes. A written agreement covering salary, hours, benefits, paid time off, and termination terms protects both you and the nanny. Many templates exist online, or consult a family law attorney for $100–$300 to draft one specific to your state.
Q: How often should I expect nanny turnover and what's typical notice? Most nannies stay 2–4 years. Expect 2–4 weeks' notice when they leave; agencies often provide replacement during the transition, while private hires require you to find coverage immediately.
Q: What's the difference between a nanny and a babysitter through a household manager service? Nannies are full-time, long-term caregivers handling childcare as their primary role; babysitters are part-time and typically cover evenings or specific days. Household managers coordinate both plus household tasks like light tidying or meal prep.
Start by clarifying your schedule and budget, then reach out to 2–3 agencies and 3–5 private candidates to compare.