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Mackay, Caswell & Callahan, P.C.

Mackay, Caswell & Callahan, P.C. - New York, NY

Tax Law Lawyers in New York, NY

10 East 39th Street Suite 901 New York, NY 10016

  • Free Consultation

New York Tax Law Firm

Updated: 02/27/2026

Areas of Practice

  • Tax Law

Firm Information

Overview

Mackay, Caswell & Callahan, PC that helps clients with IRS, New York State and Connecticut tax matters including tax fraud, tax evasion, audits and investigations, offers in compromise, voluntary disclosures, and installment payment arrangements.

The firm's managing attorney, Joseph M. Callahan, Esq., offers exceptional advocacy coupled with an understanding of what's required to resolve most tax issues.

Over the course of his 35+ year career, Mr. Callahan has been honored and acknowledged by many prestigious organizations. He has been peer-reviewed and rated AV Preeminent* by Martindale-Hubbell, received the Avvo Client Choice Award, and has numerous positive client reviews on Google, Avvo, Findlaw and other directories.

When it comes to tax law, Mackay, Caswell & Callahan is here to provide the peace of mind our clients deserve without the double talk. As we phrase it, "straight talk & effective solutions." So contact us today to understand more about what we can do for you.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer-review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Ratings™ fall into two categories – legal ability and general ethical standards.


Languages

  • English

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Contact

Google Map

New York, NY

10 East 39th Street
Suite 901
New York, NY 10016

Directions

Phone Number: 646-749-9642

Email: Send a message

Hours: 8:00 am - 6:00 pm, M-F; Appointments:Weekday

  • Credit Cards Accepted
  • Free Consultations
  • Virtual Appointments

Additional New York Locations

East Syracuse, NY  (193.8 miles)

6739 Myers Road
East Syracuse, NY 13057

Directions

Phone Number: 646-749-9642

Email: Send a message

Websites:

Appointments: Weekday

  • Credit Cards Accepted
  • Free Consultations

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