Hiring professionals to help run your business creates deductible expenses. That includes an accountant or bookkeeper who handles your books, a tax preparer who files your business return, a lawyer who drafts a contract or advises on a business matter, and consultants you hire for business advice.
Tax preparation fees have a split. The part of the fee that covers your business, preparing your Schedule C, self-employment tax, and related schedules, is deductible as a business expense. The part that covers your personal Form 1040 is not deductible. A good preparer can tell you the business share.
Legal fees follow the purpose. Fees for business matters, a client contract, a business dispute, forming an entity, are deductible. Personal legal fees are not. If a single bill covers both, only the business portion is deductible.
Keep the invoices and a short note of what each service was for. These are usually larger, less frequent payments, so they are easy to remember, but the documentation matters if you are ever asked to substantiate the deduction.

