Ryan Tivnan's Contact Details

Ryan Tivnan's Company Details

McMahon & Associates, PC

Boston, MA, US • 5 - 9 Employees
Legal/Attorney

McMahon & Associates, PC represents individuals, estates and businesses with federal and state tax issues from audit through collection. It is led by D. Sean McMahon, a former Senior Attorney with the IRS Office of Chief Counsel and a former Special Assistant United States Attorney for Massachusetts and New Hampshire where he was responsible for tax cases. The firm defends IRS and state tax matters and excels at resolving difficult and complex tax disputes. We counsel clients through examinations and liability disputes and, when necessary, take disputed issues to court. Collectively, our Boston tax attorneys have more than 100 years of experience investigating and defending IRS and state tax matters.As a former IRS attorney, Sean offers clients unique insights on the real risks presented in disputes with the IRS and planning for complex transactions. He advises clients on the tax considerations of corporate, real estate, partnership, securities and option transactions. Sean also has extensive experience assisting individuals with foreign transaction reporting and penalty disputes, including foreign bank accounts and FBAR requirements.