Mackay, Caswell & Callahan, P.C.

Mackay, Caswell & Callahan, P.C. has provided tax law services in New York City since 1961. Led by Joe Callahan, they handle IRS and NYS tax audits, collection actions, and criminal tax defense. The firm offers audit representation, civil tax litigation, and collection defense. They also provide business law services including contract disputes and probate matters. With offices in New York, Syracuse, and Albany, the practice serves clients facing complex tax challenges throughout New York State.