The artwork of Carmen Herrera, an abstract artist who died in 2022 at the age of 106, was incorrectly overvalued by the IRS and, as a result, her estate was assessed a nearly $3.6 million tax bill, according to a petition in US Tax Court. The agency valued the artwork she passed down at more than $37 million when it should be valued at closer to $28 million, according to Herrera’s estate’s petition, filed June 3.