Atty. Jonathan A. "Jon" Block
Jon Block represents and advises clients with Maine, New Hampshire, and Massachusetts tax problems. Jon litigates tax cases at the administrative level and through all levels of the court system, advises clients on transactional and multistate tax issues, obtains advance rulings for clients, and does a substantial amount of legislative and government relations work in the tax area.
Litigation and Controversy - Tax & More Attorney · Serving Portland, ME
Profile Summary
About Jonathan A. "Jon" Block at a Glance
Jonathan A. "Jon" Block is a tax and tax litigation attorney based in Portland, Maine, practicing at Pierce Atwood LLP. Admitted to practice in United States, Maine, United States, Massachusetts, and United States, New Hampshire. Educated at Boston University School of Law (—, 2000) and University of Maine (J.D., 1992). Recognitions include Best Lawyers in America — Litigation and Controversy - Tax (2026), Best Lawyers in America — Tax Law (2026), and Best Lawyers in America — Awards: (2026). Serves clients in Portland, ME and the surrounding metropolitan area.
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About Jonathan A. "Jon" Block
- Jon Block represents and advises clients with Maine, New Hampshire, and Massachusetts tax problems
- Jon litigates tax cases at the administrative level and through all levels of the court system, advises clients on transactional and multistate tax issues, obtains advance rulings for clients, and does a substantial amount of legislative and government relations work in the tax area
- Jon's substantive expertise in state and local tax encompasses corporate and individual income tax, business profits tax, sales and use tax, property tax, excise tax, transfer tax, and other state and local taxes
- Jon also advises expanding and relocating companies on taking maximum advantage of available tax and economic development incentives
- Jon's client base includes large, medium and small businesses as well as individuals
Practice Areas Explained
Jonathan A. "Jon" Block's Areas of Legal Practice
Each practice area below reflects the types of cases Jonathan A. "Jon" Block handles, with a practical overview of what that area of law involves and how it may apply to your situation in Portland.
Tax Law in Portland
Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.
Jonathan A. "Jon" Block is one of 84,606 tax attorneys indexed nationally. Browse tax attorneys in Maine →
Tax Litigation in Portland
Jonathan A. "Jon" Block is one of 3,087 tax litigation attorneys indexed nationally. Browse tax litigation attorneys in Maine →
Jurisdictional Context
Why Local Counsel Matters in Portland
Practicing law in Maine. Legal matters in Maine are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Portland are typically filed in the local municipal court or the appropriate Maine state district court, depending on subject matter and amount in controversy. An attorney licensed in Maine brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Maine courts without local counsel or pro hac vice admission.
Portland Courts and Legal Process
Choosing a Portland-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Maine attorneys? Browse all attorneys in Portland or all attorneys in Maine.
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Professional Profile
Why Clients in Portland Choose Jonathan A. "Jon" Block
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Jonathan A. "Jon" Block's practice in the field of tax and tax litigation.
Multi-State Bar Admission
Licensed in United States, Maine, United States, Massachusetts, and United States, New Hampshire, Jonathan A. "Jon" Block can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering tax and tax litigation, Jonathan A. "Jon" Block can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Portland
A Portland-based practice means Jonathan A. "Jon" Block attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Jonathan A. "Jon" Block Handles in Portland
Below is a representative sample of the types of matters Jonathan A. "Jon" Block has experience with under Maine law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Jonathan A. "Jon" Block directly to discuss the specifics of your situation.
Search Reference
How People Find Jonathan A. "Jon" Block Online
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Jonathan A. "Jon" Block's Practice Areas & Specializations
Education & Law School Background
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Bar Admissions & Licensed Jurisdictions
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