62 of 85. Circular 230 authorizes an individual to sign, as the preparer, a tax return that: Reports a $12,000 loss from an investment with no documentation or written opinion. Shows zero income tax due and includes a claim that filing and paying income taxes are voluntary. Takes a non-frivolous position and has substantial authority for the position. Takes an undisclosed position that the tax preparer has not encountered before and does not have time to research