Additional rules.
(iii) Additional rules. The detailed report is not a determination letter within the meaning of paragraph (c)(6) of this section and cannot be appealed to Tax Court under section 7623(b)(4) and paragraph (d) of this section. The detailed report will notify the whistleblower that the IRS cannot determine or pay any award until there is a final determination of tax, as defined in 301.76234(d)(2).