A real estate development company and its related businesses have sued Akin Gump Strauss Hauer & Feld, accounting firm Grant Thornton and Grant Thornton tax partner Jamie Fowler in a Dallas state district court. The plaintiffs allege that following the defendants’ advice—not to settle a considerable tax bill with the Internal Revenue Service and New York state—cost them $12 million in actual damages.

“We find the allegations without merit and intend to vigorously defend ourselves,” Grant Thornton spokeswoman Michele Mazur said in an email.