Jonathan A. "Jon" Block, Tax Attorney in Portland, Maine
focused on Tax and Tax Litigation
Portland, ME
Trusted tax attorney serving Portland.
- 3
- Bar admissions
Practices in
Are you Jonathan A. "Jon" Block?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Jonathan A. "Jon" Block is an attorney based in Portland, MAINE. The practice focuses on Tax and Tax Litigation.
- Based in
- Portland, MAINE
- Experience
- attorney
- Known for
- Tax · Tax Litigation
- Handles Tax and Tax Litigation matters from Portland, MAINE.
- Recognized with Lawyer of the Year — Tax Law, Portland (ME) (2022).
About Jonathan A. "Jon" Block: Jonathan A. "Jon" Block is an attorney based in Portland, MAINE. The practice focuses on Tax and Tax Litigation.
Areas of practice
Legal matters Jonathan takes on
Jonathan concentrates on tax and tax litigation. Each area below outlines the kind of case Jonathan handles, typical outcomes to expect, and how the intake process starts.
Tax cases in Portland, Maine
Jonathan takes tax matters in Portland, Maine. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jonathan agrees to represent you.
Tax Litigation cases in Portland, Maine
Jonathan takes tax litigation matters in Portland, Maine. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jonathan agrees to represent you.
Biography
Meet Jonathan A. "Jon" Block — tax lawyer in Portland
Jonathan A. "Jon" Block is an attorney based in Portland, MAINE. The practice focuses on Tax and Tax Litigation.
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.
Jonathan's approach to tax cases
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…
The kind of cases Jonathan takes
Jonathan reviews new inquiries case-by-case for tax and tax litigation matters in Portland and the surrounding Maine area.
Credentials
Education, bar admissions, and languages
Boston University School of Law
— · 2000
University of Maine
J.D. · 1992
University of Pennsylvania
B.A. · 1985
Jurisdictions
Jonathan's state bar admissions
United States, New H
ACTIVE
United States, Massa
ACTIVE
United States, Maine
ACTIVE
Jonathan studied at — in Boston University School of Law, J.D. in University of Maine, and B.A. in University of Pennsylvania.
Law school and academic background
Jonathan completed — in Boston University School of Law, J.D. in University of Maine, and B.A. in University of Pennsylvania. Formal legal training is one signal of substantive knowledge — the day-to-day practice Jonathan runs in Maine is where that training gets applied to real client questions.
Recognition
Recognition and thought leadership
Jonathan has received 7 formal recognitions from bar associations, industry bodies, and peer-review services.
Lawyer of the Year — Tax Law, Portland (ME)
2022
Lawyer of the Year — Tax Law, Portland (ME)
2015
Best Lawyers in America — Litigation and Controversy - Tax
2026
Best Lawyers in America — Tax Law
2026
Best Lawyers in America — Awards:
2026
Best Lawyers in America — Rated AV Preeminent™ by Martindale-Hubbell and is a recognized leader in his field.
2026
Best Lawyers in America — The Best Lawyers in America “Lawyer of the Year” in Maine for Tax Law (2022)
2026
Legal awards and honors
Lawyer of the Year — Tax Law, Portland (ME) (2022). Lawyer of the Year — Tax Law, Portland (ME) (2015). Best Lawyers in America — Litigation and Controversy - Tax (2026). Best Lawyers in America — Tax Law (2026). Best Lawyers in America — Awards: (2026). Best Lawyers in America — Rated AV Preeminent™ by Martindale-Hubbell and is a recognized leader in his field. (2026).
Locations
Jonathan A. "Jon" Block's office in Portland
Jonathan's primary office is at 254 Commercial Street, Portland, Maine, 04101. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Jonathan A. "Jon" Block
Jonathan has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
Only verified clients who have consulted with Jonathan A. "Jon" Block can leave a review.
Schedule your consultationHiring guide
How to hire Jonathan A. "Jon" Block — what to expect in your first consultation
Working with a new tax attorney should feel structured. Here's how the first two conversations with Jonathan usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Jonathan charges for the initial consult. That fee is credited toward representation if you retain Jonathan's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Jonathan will tell you what matters and what doesn't.
Questions to ask a tax attorney in Portland, Maine
A short list to run through before you commit: How many tax matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Jonathan
Jonathan discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in tax practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every tax matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Jonathan confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Jonathan's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many tax practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Jonathan A. "Jon" Block
How much does it cost to hire Jonathan for a tax case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Jonathan walks through the likely range during the consult so there are no surprises.
Does Jonathan offer a free consultation?
Jonathan charges for the initial consult; that fee is credited toward representation if you retain Jonathan's office. Some tax attorneys offer free consults — check Jonathan's current terms during booking.
How long do tax cases in Maine typically take?
Simple tax matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Jonathan gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Jonathan take my case if I'm outside Portland?
Jonathan is licensed in Maine. Matters governed by Maine law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Jonathan will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Jonathan?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Jonathan will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Jonathan accepting new tax clients right now?
Jonathan's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Tax attorneys serving Portland, Augusta and Bangor in Maine
Jonathan handles tax matters throughout Maine. Each city below is a direct link into the search page for verified tax attorneys in that community.
More counsel
Other top-rated tax attorneys in Maine
If Jonathan's intake is full or the fit isn't right, these tax attorneys in Portland handle similar matters. Every profile below is verified and open to consultations.





