No. The IRS, the courts and others can compel your accountant to testify about your conversations and turn over letters and other correspondence between you. A solution is to have your attorney hire your accountant to handle your tax matters. Your accountant, working for your lawyer, would then come under the attorney-client privilege. Since confidential documents with your accountant can be subpoenaed, you should have these copies and all copies immediately returned to you. Only communication with your lawyer is privileged and protected. That’s one advantage to having a lawyer represent you rather than an accountant.