Katia Sebastiani, Tax Attorney in the United States
Over 28 years of legal practice
Practicing tax since 1998.
- 28+
- Years practicing
- 1
- Bar admission
Practices in
Are you Katia Sebastiani?
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Quick answer
Katia Sebastiani is an attorney based in Montréal, QUEBEC. The practice focuses on Tax. Katia has over 28 years of legal experience.
- Based in
- Montréal, QUEBEC
- Experience
- over 28 years
- Known for
- Tax
- Handles Tax matters from Montréal, QUEBEC.
- Over 28 years of practice as a licensed attorney.
- Recognized with Best Lawyers in America — Tax Law (2026).
About Katia Sebastiani: Katia Sebastiani is an attorney based in Montréal, QUEBEC. The practice focuses on Tax. Katia has over 28 years of legal experience.
Areas of practice
Katia's practice areas in the U.S.
Katia concentrates on tax. Each area below outlines the kind of case Katia handles, typical outcomes to expect, and how the intake process starts.
Tax cases nationwide
Katia takes tax matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Katia agrees to represent you.
Biography
Katia Sebastiani, tax attorney serving the U.S.
Katia Sebastiani is an attorney based in Montréal, QUEBEC. The practice focuses on Tax. Katia has over 28 years of legal experience. Katia works from the U.S. and takes on tax matters across the region.
Katia Sebastiani is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law.
Katia, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katia is held by other top lawyers in the same geographic and legal practice area.
Katia's approach to tax cases
Katia Sebastiani is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Katia, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katia is held by other top lawyers in the same geographic and legal practice area.
Clients Katia works with
Katia reviews new inquiries case-by-case for tax matters in the United States.
Jurisdictions
Katia's state bar admissions
Quebec, Barreau du Q
1998 · ACTIVE
Recognition
Katia's legal honors and published work
Katia has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
Best Lawyers in America — Tax Law
2026
Legal awards and honors
Best Lawyers in America — Tax Law (2026).
Locations
Office locations for Katia Sebastiani in the U.S.
Katia's primary office is at Montréal, Quebec. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Katia Sebastiani
Katia has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
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Schedule your consultationHiring guide
How to hire Katia Sebastiani — what to expect in your first consultation
Working with a new tax attorney should feel structured. Here's how the first two conversations with Katia usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Katia charges for the initial consult. That fee is credited toward representation if you retain Katia'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; Katia will tell you what matters and what doesn't.
Questions to ask a tax attorney in your state
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 Katia
Katia 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. Katia confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Katia'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 Katia Sebastiani
How much does it cost to hire Katia for a tax case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Katia walks through the likely range during the consult so there are no surprises.
Does Katia offer a free consultation?
Katia charges for the initial consult; that fee is credited toward representation if you retain Katia's office. Some tax attorneys offer free consults — check Katia's current terms during booking.
How long do tax cases in this state 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. Katia gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Katia take my case if I'm outside the area?
Katia evaluates matters case by case. If the venue is outside Katia's regular jurisdictions, the intake call will confirm whether direct representation or a referral makes more sense.
What should I bring to my first meeting with Katia?
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. Katia will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Katia accepting new tax clients right now?
Katia's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.