Many household employers are only now beginning to seriously consider the costs and risks related to paying nannies and other household workers “on the books.” In fact, complaince rates hover around 20%. More families are recognizing the merits of filing as employers, and helping household workers with required withholding and tax payment. While filing and paying taxes on household employees brings with it additional costs and paperwork, it also avoids stiff penalties if you are audited by the Internal Revenue Service.