As the owner of Ansari Tax Law Firm in St. Petersburg, Florida, Mansoor Ansari uses his extensive knowledge of tax law and tax court rulings to provide assistance to clients dealing with civil or criminal issues relating to federal tax controversy. His cases often involve issues such as false or frivolous tax returns, payroll withholding tax issues, offshore bank accounts and international income, tax debt, or failure to file tax returns. Cutting-edge technology helps Mansoor Ansari advocate for his clients as he files back tax returns, applies for lien discharges, completes audit appeals, and requests audit reconsiderations to bring clients into compliance with IRS rules and regulations.

After earning his B.A. from York University in Toronto, Canada, Mansoor Ansari was employed with the Ministry of Finance with the government of Ontario as an analyst. He later earned his J.D. from Thomas M. Cooley Law School in Lansing, Michigan.

After passing the Illinois bar, Mansoor Ansari began working at a bankruptcy law firm in Chicago, where he dealt with tax-related issues surrounding filings for Chapter 7 and Chapter 13 bankruptcy. The interest in tax law he developed from this position led Mansoor Ansari to earn his LL.M. from DePaul University College of Law in Chicago, IL. Also known as the Master of Laws, the LL.M. degree in the tax field requires 36 credits of specialized tax law classes, encompassing topics such as international taxes, real estate taxes, gift taxes, taxation of individuals, taxation of corporations, and tax controversy.

An active member of the American Bar Association, International Tax Professionals, Tax Controversy Professionals, and the St. Petersburg Chamber of Commerce, Mansoor Ansari is regularly sought as an expert in issues relating to government and tax procedure. He has been interviewed on WCAR Radio and ABC Action News.