How to Pay a Nanny Legally in 2026: A Complete Guide for Household Employers

Hiring a nanny is one of the biggest financial decisions a family makes, and it comes with more legal responsibility than most parents expect. The moment you hire someone to care for your children in your home on a regular schedule, you become an employer in the eyes of the IRS, whether you feel like one or not. That means payroll, tax withholding, and paperwork, not just a weekly check written by hand.

Paying under the table might feel simpler in the short term, but it puts both you and your nanny at risk. Families can face back taxes, penalties, and interest, while nannies lose out on Social Security credits, unemployment eligibility, and a verifiable income history they may need for a loan or an apartment lease down the road. The good news is that doing this correctly is far more manageable than it sounds, especially now that most of the process can be handled online in an afternoon.

This guide walks through exactly how to pay a nanny legally in 2026, including the updated tax thresholds, required forms, and a real-world cost example so you know what to budget for before you make an offer.

Quick Answer: What Legal Pay Looks Like in 2026

If you pay a household employee $3,000 or more in cash wages during 2026, you are required to withhold and pay Social Security and Medicare taxes on their full wages for the year. You will also need an Employer Identification Number, a completed I-9 and W-4 for your nanny, a state new hire report, and a year-end W-2. Most families additionally carry workers’ compensation insurance and put a written employment agreement in place, even though a contract is not always legally required.

Is Your Nanny Really an Employee?

This is the first question to settle, and it trips up more families than any other part of the process. The IRS is clear that a nanny who works in your home, on a schedule you set, using methods and routines you direct, is a household employee, not an independent contractor. This holds true even if your nanny also works for other families or considers themselves self-employed.

The distinction matters because employees get a W-2, and you as the employer are responsible for your share of payroll taxes. Contractors get a 1099 and handle their own taxes. Misclassifying a nanny as a contractor to avoid payroll responsibilities is one of the most common nanny tax mistakes, and it is one the IRS actively looks for, since household employment has clear legal criteria that rarely support a contractor classification.

Step 1: Understand Federal and State Wage Law

Before you get into paperwork, make sure the wage itself is legal. The Fair Labor Standards Act requires household employees to be paid at least the federal minimum wage of $7.25 an hour, though most states and many cities set a higher minimum that applies instead. Overtime rules also apply. Nonexempt household employees who work more than 40 hours in a workweek are entitled to time and a half for every hour beyond that, and live-in employees have their own separate overtime rules that vary by state.

Read: How a 20-Year Term Policy Works?

Step 2: Get an Employer Identification Number

Once you have agreed on a wage, apply for an Employer Identification Number, or EIN, directly through the IRS website. This nine-digit number identifies you as a household employer for tax purposes and is required before you can file payroll taxes or issue a W-2. The application is free and usually takes only a few minutes online, and you receive your EIN immediately upon completion. Keep this number somewhere secure, since you will use it every time you file tax forms related to your nanny’s employment.

Step 3: Complete the Required Paperwork

With an EIN in hand, there are a few forms every household employer needs on file.

Form I-9 confirms your nanny’s identity and legal eligibility to work in the United States. Your nanny will need to provide documentation, such as a passport or a driver’s license paired with a Social Security card, and you keep the completed form in your own records rather than submitting it anywhere.

Form W-4 lets your nanny elect federal income tax withholding if they want it. Unlike Social Security and Medicare taxes, federal income tax withholding for household employees is optional unless your nanny specifically requests it.

State withholding and new hire forms vary by state. Most states require household employers to report new hires within a set window, typically 20 days, to a state new hire registry. This supports child support enforcement and helps states catch unemployment fraud. Check your specific state’s household employer requirements, since deadlines and required information differ from state to state.

Step 4: Set Up Payroll and Calculate Wages

With paperwork in place, set up a system to track hours, calculate gross pay, and withhold the right amounts each pay period. Many families use a dedicated household payroll service, since these tools automatically calculate Social Security, Medicare, and any state-specific withholding, and many also generate the year-end W-2 and file quarterly forms on your behalf. A payroll service typically costs $40 to $75 a month, a worthwhile expense for most families given the complexity of household employment tax rules and the penalties for getting them wrong.

If you handle payroll manually, keep a simple weekly log of hours worked, gross wages paid, and any withholding, since you will need this detail when you file your annual Schedule H with your personal tax return.

Step 5: Understand the 2026 Nanny Tax Thresholds

This is the part of the process that changes every year, and 2026 brought a meaningful update.

The Social Security and Medicare threshold for 2026 is $3,000, up from $2,800 in 2025. If you pay a single household employee $3,000 or more in cash wages during the year, you and your nanny both owe Social Security and Medicare tax, commonly called FICA tax, on the entire amount, not just the portion above the threshold. Combined, these taxes equal 15.3% of wages, split evenly between employer and employee at 7.65% each. Many families choose to cover both shares themselves rather than withholding the employee’s portion from the nanny’s paycheck, effectively treating it as part of the total cost of employment.

Federal unemployment tax, known as FUTA, kicks in separately if you pay $1,000 or more in total cash wages to household employees in any single calendar quarter. This threshold has not changed for 2026. FUTA is paid entirely by the employer at a nominal 6% rate on the first $7,000 of wages per employee, though most employers receive a credit for state unemployment contributions that brings the effective rate down to about 0.6%.

The Social Security wage base, the maximum amount of wages subject to Social Security tax, rose to $184,500 for 2026, though this rarely affects nanny pay since most household employees earn well below that ceiling. Medicare tax, by contrast, applies to all wages with no cap at all.

Certain family members are excluded from these thresholds entirely. Wages paid to your spouse, your parent, or your child under age 21 generally do not trigger Social Security and Medicare withholding, and employees under 18 are exempt unless childcare is their principal occupation.

Step 6: Provide Workers’ Compensation Insurance

Workers’ compensation insurance covers medical costs and lost wages if your nanny is injured on the job. Not every state legally requires it for household employers, but a growing number do, and even where it is optional, it is worth carrying. A workplace injury without coverage can leave a family personally liable for medical bills and lost income, while a policy typically costs a few hundred dollars a year and provides real protection for both sides of the employment relationship.

Step 7: Put a Written Employment Agreement in Place

A nanny contract is not always legally required, but it is one of the most effective tools for avoiding disputes later. A solid agreement should spell out pay rate, scheduled hours, overtime policy, paid time off, sick leave, holidays, job duties, and the process for ending employment. Having these terms in writing protects both you and your nanny and gives you something concrete to refer back to if expectations shift over time. Review and update the agreement whenever pay, hours, or responsibilities change.

Step 8: Report the New Hire to Your State

Most states require household employers to report new hires to a state registry, typically within 20 days of the start date. This process supports child support enforcement and helps prevent unemployment insurance fraud. You will generally need to provide your nanny’s name, address, Social Security number, and start date. Deadlines and exact requirements vary by state, so check your state labor department’s household employer resources to confirm the process where you live.

Step 9: Keep Accurate Payroll Records

Once everything is set up, ongoing recordkeeping is what keeps you protected at tax time and during any potential audit. Track hours worked, gross wages, taxes withheld, and any paid time off taken. The IRS generally recommends keeping these records for at least three to four years, and many payroll services store this history automatically, which is one of the strongest arguments for using one even if the monthly fee feels like an added cost.

Tax Breaks That Help Offset the Cost

Paying a nanny legally comes with real tax advantages that families using cash payments miss out on entirely.

A Dependent Care Flexible Spending Account, offered through many employers, lets you set aside pre-tax dollars to cover nanny wages and other qualifying childcare costs. For 2026, the IRS increased the maximum contribution limit to $7,500 for married couples filing jointly, up from $5,000, following changes under the One Big Beautiful Bill Act. Keep in mind that your employer’s specific plan may not adopt the new limit right away, so check with your HR department before assuming the full amount is available to you.

The Child and Dependent Care Credit is a federal tax credit available to working parents who pay for childcare so they can work or look for work. Only wages paid through a legal, documented payroll arrangement qualify, which is one more reason cash-under-the-table pay ends up costing families real money at tax time.

What Legal Nanny Pay Actually Costs: A Real Example

Here is a realistic breakdown for a full-time nanny earning $25 an hour for 40 hours a week, a common rate in mid-sized metro areas in 2026.

Item	Weekly	Annual
Gross wages	$1,000	$52,000
Employer Social Security (6.2%)	$62	$3,224
Employer Medicare (1.45%)	$14.50	$754
FUTA (effective ~0.6% on first $7,000)	Varies	~$42
Estimated total employer cost	~$1,077	~$56,000

On top of the gross wage, a family employing a full-time nanny at this rate should expect to pay roughly 8% to 10% more in employer taxes, plus the cost of any workers’ compensation policy and payroll service fees. Budgeting the true cost, not just the hourly wage, avoids an unpleasant surprise when tax season arrives.

Conclusion

Paying a nanny legally in 2026 takes a bit more upfront effort than handing over cash each week, but the process is more straightforward than most families expect, and the protection it offers goes both directions. You avoid the penalties and back taxes that come with misclassifying a household employee, and your nanny builds real Social Security credits, unemployment eligibility, and a verifiable income history.

With the nanny tax threshold now at $3,000 and a wider dependent care FSA limit available to many families, 2026 is a reasonable year to get this right if you have not already. Get your EIN, complete the I-9 and W-4, set up payroll, and put a written agreement in place. From there, a household payroll service can handle most of the ongoing complexity so you can focus on finding the right person to care for your kids, not on tax forms.

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FAQs: Pay a Nanny Legally