Depending on your state, if you employ a nanny or caregiver, you may be responsible for state specific employment taxes.
See https://paychecknanny.com/blog/suta/ for links to each states Unemployment Tax Agency for more details.
California, Colorado, District of Columbia, New Jersey, New York, Massachusetts, Oregon, Rhode Island, and Washington also have State Disability Insurance and/or Family Leave contribution requirements. See https://paychecknanny.com/blog/disability-or-family-leave-taxes/ for details.