A listener wrote in with what felt like a simple question. They have a full-time nanny who has been with the family for over a year, their older daughter just started a private school that is a forty-minute drive each way, and the nanny is now logging two round trips a day plus errands in her personal car. The family wants to get her a safe new vehicle to use for the job, and they are not sure what the right structure is. Title it to her? Add her to the family auto policy? Put it through some kind of business?
There is a clean answer to this, but it starts with the recognition that you have crossed a threshold in the relationship. When you have a full-time household employee whose role expands to include driving the kids on a daily route, you are no longer running a casual private arrangement. You are running something closer to a household business, and the structures you use need to reflect that.
When a Household Job Turns Into a Driver’s Seat
The moment the nanny starts driving regularly for the job, especially for a meaningful daily commute plus errands, the insurance picture changes. Most personal auto policies are written for personal use. The minute the use becomes commercial in nature, which is exactly what regular paid driving on behalf of an employer looks like, the policy may not respond the way you would expect after a claim.
This is the spot where families get tripped up. They think they are doing the right thing by buying a car and just adding the nanny to the family policy, when in reality an insurer can later argue the use was commercial and refuse coverage. A lawsuit after a car accident is the worst possible moment to discover that distinction.
The Three Structures That Actually Work
There are three legitimate ways to handle this, and they are not equally appealing in practice.
The first is to buy the vehicle and title it in her name, with some kind of formal arrangement around the purchase. That can look like a loan from you to her with terms that allow the loan to be called if she stops working for you, or something along those lines. It is workable, but the documentation needs to be drafted properly with an attorney so you are not exposed if the employment ends.
The second is for her to keep her own car and for you to reimburse mileage at a set rate. She logs the miles she drives for the job, you pay her for those miles, and you confirm with her insurer that her policy covers using the vehicle for paid work. This is the cleanest structure, the cheapest to maintain, and the one I usually steer families toward.
The third is to set up a household management entity, buy the vehicle through that entity, and have the nanny driving it as an employee of the household business. This gives you the most control over both insurance and the asset itself, but it also adds real complexity, including ongoing payroll and accounting considerations. For most families in this situation, it is more machinery than the problem actually requires.
Why the Mileage Approach Tends to Win
The reason the second option usually wins is that it cleanly separates the three problems you need to solve. You are helping her get into a safe vehicle, which can be addressed with a one-time financial arrangement on the purchase side if needed. You are paying her fairly for the use of her car on the job, which is a straightforward mileage reimbursement. And you are confirming that the insurance is appropriate, which is a phone call with her carrier and a written note for your records.
That structure protects everyone. It avoids the worst-case version where you bought a car, she resigned a month later, and you are left untangling title and insurance issues. It also avoids the worst-case version where she has a claim while driving for the job and the insurer refuses to pay because the use was actually commercial. You keep the boundaries clear, which is exactly what makes a long-term household working relationship sustainable.
Three Boxes to Check Before You Hand Over the Keys
If you are setting this up, work through three confirmations in order. First, has she sourced a safe and reliable vehicle, and how are you helping her finance it in a way that does not create future awkwardness? Second, what is the mileage rate, how is she tracking the miles, and how does that flow into payroll or a separate reimbursement? Third, does her auto insurance explicitly allow paid use for her job, and is that confirmation in writing somewhere you can find later? If those three are settled, you have a clean structure that holds up well over time, treats her fairly, and keeps your family out of the gray zone where insurers tend to find reasons to step back.
This post is adapted from a recent episode of the Scholar Wealth Podcast. For more perspective on handling vehicles, payroll, and insurance for household employees, listen to the full podcast episode here.