When the facts of a tax problem are sensitive - unfiled years, cash income, offshore accounts, anything that makes your stomach tighten - the first professional decision is not what to file. It is who you can safely talk to. Privilege answers that, and its boundaries are sharper than most people assume.
What the Privilege Covers
Communications between you and your attorney, made in confidence for the purpose of legal advice, are privileged: the government cannot compel either of you to reveal them, in audits, investigations, or court. The protection covers the communications, not the underlying facts - you can still be asked what happened, but not what you told your lawyer about it - and not pre-existing documents, which do not become privileged by handing them to counsel. Within those lines, the protection is robust, criminal cases included, which is precisely where it earns its keep.
Where Accountants Stand
There is a limited statutory privilege for communications with CPAs and enrolled agents, and its fine print is the trap: it does not apply in criminal matters, does not cover tax return preparation, and fails in several other contexts. Your accountant can be summoned and compelled to testify about everything you told them - and in criminal tax cases, routinely is. The practical rule: the moment facts feel sensitive, conversations move to an attorney first.
The Kovel Arrangement
Sensitive cases still need accounting work, and the bridge is the Kovel arrangement: the attorney engages the accountant, the accountant works for the attorney to assist the legal advice, and the accountant's work comes inside the privilege. Done correctly - engagement letter from counsel, work directed by counsel, before the sensitive disclosures happen - it lets a full team operate under protection. Done as an afterthought, it protects nothing, and sequencing errors here are unfixable in hindsight.
One honest boundary: privilege protects candor, not ongoing wrongdoing - advice in furtherance of future fraud falls outside it. What it exists for is exactly your situation: telling a professional the whole truth so the path back can be built properly. That conversation, here, is privileged from the first minute of the free consultation. Let's talk.