Divulging information.

Except as provided in subs. (1g), (4), (4m), (10), and (11), no person may divulge or circulate or offer to obtain, divulge, or circulate any information derived from an income, franchise, withholding, fiduciary, partnership, or limited liability company tax return or tax credit claim, including information which may be furnished by the department as provided in this section. This subsection does not prohibit publication by any newspaper of information lawfully derived from such returns or claims for purposes of argument or prohibit any public speaker from referring to such information in any address. This subsection does not prohibit the department from publishing statistics classified so as not to disclose the identity of particular returns, or claims or reports and the items thereof. This subsection does not prohibit employees or agents of the department of revenue from offering or submitting any return, including joint returns of a spouse or former spouse, separate returns of a spouse, individual returns of a spouse or former spouse, and combined individual income tax returns, or from offering or submitting any claim, schedule, exhibit, writing, or audit report or a copy of, and any information derived from, any of those documents as evidence into the record of any contested matter involving the department in proceedings or litigation on state tax matters if, in the department’s judgment, that evidence has reasonable probative value.