Yes, and most will, but they must be pertinent to the administration of the estate and they must be reasonable under the circumstances. Hiring professionals to do the professional services such as legal and accounting for example is both pertinent and reasonable. The fees may well be less than the money they’ll save the estate.
Unrelated expenses which benefit the executor without furthering the process of the administration or unreasonable expenses such as wining and dining are completely unacceptable. An application to the probate court can resolve this and may well result in the executor being required to repay the estate for previous misspending.