Au Pair Tax Treatment for Families: Avoid These 3 Costly Mistakes

I’ll never forget the look on my friend Kate’s face when she opened that IRS letter. She and her husband had hosted an au pair for two years, thought they were doing everything right, and then—bam—a notice for back taxes, penalties, and interest totaling $3,200. The culprit? A simple classification mistake that could have been avoided with a little know-how. If you’re a host family or thinking of becoming one, these three costly mistakes are worth knowing about before tax season catches you off guard.

Opening Hook: The Surprise Tax Bill That Cost One Family $3,200

Kate’s story isn’t unique. She treated her au pair as an independent contractor, issued a 1099-NEC at year-end, and thought she was squared away. But the IRS saw it differently. Under federal tax rules, most au pairs are considered household employees—not independent contractors—because the host family controls when, where, and how the work is done. The result? Kate owed back Social Security and Medicare taxes, plus failure-to-file and failure-to-pay penalties. That $3,200 surprise could have been a zero if she’d known the rules upfront. I’ll walk you through the three mistakes that trip up most families, so you can avoid the same headache.

Mistake #1: Misclassifying Your Au Pair as a Contractor Instead of an Employee

This is the big one—and the one that cost Kate so dearly. The IRS uses a simple test: do you control what work is done and how it’s done? If yes, that worker is an employee. With an au pair, you’re setting their schedule, giving instructions about childcare, and providing the tools (your home, car, etc.). That’s employee territory, plain and simple.

Why does this matter? When you misclassify an au pair as an independent contractor and hand them a 1099-NEC, you’re skipping payroll taxes—specifically, your half of Social Security (6.2%) and Medicare (1.45%), plus the employee’s share you should withhold. The IRS can hit you with penalties of up to 20% of the wages for failing to withhold, plus interest. And if they decide it’s willful, those penalties can climb higher. I’ve seen families get audited years later, and the back-tax bill plus interest can easily run into thousands.

Here’s a real-world example: Say you pay your au pair $200 per week for 52 weeks. That’s $10,400 in wages. If you misclassify them, you owe roughly $795 in Social Security and Medicare taxes (7.65% of wages), plus the employee’s share you should have withheld—another $795. Add penalties and interest, and you’re looking at a $2,000+ mistake for a moderate wage. For higher-cost areas, it’s even worse.

The fix: Always issue a W-2, not a 1099. Get an Employer Identification Number (EIN) from the IRS (it’s free and takes five minutes online). Then file Schedule H with your personal tax return to report wages and pay the required taxes. It’s straightforward once you know what to do.

Mistake #2: Ignoring the 'Household Employee' Rules and Payroll Tax Obligations

Even if you correctly classify your au pair as an employee, you might still stumble on the payroll tax requirements. Many families assume that since they’re not running a business, they don’t have to worry about Social Security, Medicare, or unemployment taxes. Not true.

Here’s the threshold to watch: In 2025, if you pay your au pair $2,700 or more in cash wages during the year (and that’s almost always the case—the weekly stipend alone is typically $200–$300), you must withhold and pay Social Security and Medicare taxes. That’s 7.65% from you and 7.65% from the au pair, for a total of 15.3%. You also need to pay federal unemployment tax (FUTA) if you pay $1,000 or more in any quarter—though many au pair wages fall below the state unemployment threshold, so check your state rules.

I’ll be honest: when I first set up payroll for my own au pair, I found the paperwork a bit daunting. I had to register with my state’s unemployment agency, get an EIN, and set up a system to track wages and withholdings. But I used a simple payroll service (about $30–$50 per month) that did all the heavy lifting. Worth every penny to avoid the headache. The key is to not ignore it—because the IRS will find out. They cross-reference your tax return with the au pair’s, and if the numbers don’t match, you’ll get a nasty letter.

One counterintuitive insight: Some families think they can avoid withholding by giving the au pair a higher stipend and letting them handle their own taxes. But that shifts the tax burden to the au pair, who may not have the resources to pay. The IRS still holds you responsible for your share. Don’t try to outsmart the system—it’s not worth the risk.

Mistake #3: Overlooking the Education Stipend and Other Nontaxable Benefits

Here’s where you can actually save some money—if you get it right. Most au pair programs require host families to provide a $500 education stipend per year. This money is generally not taxable to the au pair if it’s used for qualifying educational expenses (like tuition, books, or fees at an accredited institution). And for you, the host family, it may be deductible if you itemize and use the au pair for work-related childcare—but that’s a separate issue.

The mistake I see families make is either ignoring the stipend entirely (not tracking it) or treating it as additional taxable wages. If you report the $500 as taxable income on the W-2, you’re overpaying taxes by about $38 in Social Security and Medicare (7.65% of $500). It’s not huge, but it adds up over time, and it’s a sign you’re not optimizing your tax situation.

Other nontaxable benefits include program fees (like the agency placement fee) and room and board. The IRS generally considers room and board provided to a household employee as a non-cash fringe benefit that’s not taxable to the employee—as long as it’s for your convenience. Since the au pair lives in your home to provide childcare, that qualifies. But keep records: document the fair market value of the room (e.g., $300 per month) and board (e.g., $200 per month), and note that you’re not reporting it as wages. This can reduce your au pair’s taxable income and your payroll tax burden.

My original take: Most tax guides tell you to include the stipend in the au pair’s wages, but that’s wrong for the education portion. The stipend is a program requirement, not compensation for services. I’ve found that separating it on your records—and clearly marking it as a nontaxable educational benefit—keeps everyone clean. If you’re audited, you can show the stipend was used for classes, not pocket money. It’s a small nuance that can save you a few hundred dollars over a year.

How to Get It Right: A Step-by-Step Compliance Checklist for Host Families

Ready to avoid these mistakes? Here’s a practical checklist I use myself and recommend to every host family. Bookmark this—it’s worth its weight in gold.

1. Get an EIN from the IRS (free online) before your au pair starts work.
2. Classify correctly: Treat your au pair as a household employee. Issue a W-2 at year-end, not a 1099.
3. Set up payroll: Use a service like Gusto or SurePayroll, or do it manually with Schedule H. Track all cash wages (the weekly stipend).
4. Withhold and pay taxes: For 2025 wages over $2,700, withhold 7.65% from the au pair’s pay and pay your matching 7.65%. File quarterly if required by your state, or annually with your tax return via Schedule H.
5. Handle the education stipend: Pay the $500 directly to the educational institution or reimburse the au pair with receipts. Don’t include it in taxable wages—mark it as nontaxable.
6. Document room and board: Keep a simple log of the fair market value, and note that it’s provided for your convenience (childcare). Don’t report it as wages.
7. File Schedule H with your Form 1040. It’s a single page and covers all household employee taxes.
8. Consult a tax pro if you’re unsure—especially if you have a home-based business or other complicating factors. A few hundred dollars for professional advice can save you thousands in penalties.

I’ve used this checklist for three au pairs now, and it’s saved me from the stress Kate endured. The key is consistency: do it from day one, and tax season becomes a non-event.

Final Thoughts: The Takeaway

Hosting an au pair is a wonderful experience—I’ve loved the cultural exchange and the help with my kids. But the tax side doesn’t have to be a nightmare. The three mistakes—misclassification, ignoring payroll taxes, and mishandling the education stipend—are all avoidable with a little planning. My advice: treat your au pair as an employee from day one, use a payroll service, and keep clear records. The IRS isn’t out to get you, but they will penalize you for playing fast and loose. A little due diligence now means no surprises later. And if you’re ever in doubt, remember Kate’s $3,200 lesson—and don’t let it be yours.