One legal protection separates tax attorneys from every other professional you could hire: attorney-client privilege. Understanding its real scope - and its limits - is essential buyer knowledge, because for sensitive cases it is the entire reason the attorney comes first.
What the Privilege Actually Covers
Communications between you and your attorney for the purpose of legal advice are protected from compelled disclosure - the IRS cannot summons them, prosecutors cannot subpoena them, and the protection holds in civil and criminal matters alike. Compare the alternative: accountant-client communications enjoy only a narrow federal practitioner privilege that applies in limited civil tax contexts and evaporates entirely in criminal investigations. The practical consequence: the unfiled years, the cash income, the offshore accounts, the story you need to tell someone honestly before deciding anything - that conversation is safe with an attorney and discoverable with almost anyone else.
The Limits Worth Knowing
The privilege protects communications, not facts: the underlying documents and events remain what they are, and pre-existing records do not become privileged by handing them to a lawyer. It protects advice, not assistance with ongoing fraud - the crime-fraud exception is real. And it can be waived by sharing the communications with outsiders, which is why how your team is structured matters as much as who is on it.
The Kovel Structure
Serious cases usually need accounting work - reconstruction, return preparation, analysis - and the privilege accommodates it through the Kovel arrangement: the attorney engages the accountant, making the accountant's work part of the legal representation and extending protection over it. Hire the accountant directly first and that structure is unavailable for what you already told them. This single sequencing rule - attorney first when facts are sensitive, accountant engaged through counsel - prevents more disasters than any other buyer decision in tax controversy. If your situation has anything in it you would hesitate to tell a government agent, the privileged conversation is where everything should start. Mine is free, and it is privileged from the first minute.