Katherine Long Mathieu, Tax Attorney in Washington, District of Columbia

Katherine concentrates on tax. Each area below outlines the kind of case Katherine handles, typical outcomes to expect, and how the intake process starts.

• Tax

  View other Tax attorneys

Katherine's primary office is at 1440 New York Avenue, N.W., Washington, DC, 20005. In-person meetings are by appointment; a phone intake usually comes first.

Working with a new tax attorney should feel structured. Here's how the first two conversations with Katherine usually go, from the moment you request a consult to the day representation begins.

Katherine 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.

• How much does it cost to hire Katherine for a tax case?

  Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Katherine walks through the likely range during the consult so there are no surprises.

• Does Katherine offer a free consultation?

  Katherine charges for the initial consult; that fee is credited toward representation if you retain Katherine's office. Some tax attorneys offer free consults — check Katherine's current terms during booking.

• How long do tax cases in District of Columbia 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. Katherine gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

• Can Katherine take my case if I'm outside Washington?

  Katherine is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Katherine 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 Katherine?

  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. Katherine will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

• Is Katherine accepting new tax clients right now?

  Katherine's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.