IRS problem in Denver? Tax law is unforgiving. Get a tax lawyer.

Top 10 Tax Lawyers in Denver

Colorado has a flat 4.4% state income tax (post-2022 cut). The Colorado Department of Revenue handles state tax controversy. Federal cases run through the IRS Appeals Office, U.S. Tax Court, and the U.S. District Court for the District of Colorado. Denver's tech, energy, and cannabis sectors generate complex tax matters.

These 10 Denver firms handle IRS audits, collections, criminal tax, offshore disclosures, and complex business tax planning.

How we picked these 10: We reviewed published verdicts and settlements, peer rankings (Best Lawyers, Super Lawyers, Chambers and Partners, Avvo), client review patterns, and bar association recognition. Firms that appeared consistently across independent sources made the list. We do not accept payment for placement, and we do not write sponsored reviews. More on our methodology →

1

Holland & Hart LLP (Tax)

📍 Denver Founded 1947 BigLaw

Practice focus: Tax planning, controversy, energy

AmLaw 200 firm with deep Denver tax bench.

Fee structure
Hourly
Free consultation
Initial $
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2

Brownstein Hyatt Farber Schreck (Tax)

📍 Denver Founded 1968 Mid-size

Practice focus: Federal/state tax, controversy

AmLaw 200 firm with strong Denver tax practice.

Fee structure
Hourly
Free consultation
Initial $
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3

Sherman & Howard L.L.C. (Tax)

📍 Denver Founded 1892 Mid-size

Practice focus: Tax planning, controversy

Denver firm with strong tax bench.

Fee structure
Hourly
Free consultation
Initial $
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4

Davis Graham & Stubbs (Tax)

📍 Denver Founded 1903 Mid-size

Practice focus: Tax planning, controversy

Long-established Denver tax practice.

Fee structure
Hourly
Free consultation
Initial $
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5

Anderson Tax Law

📍 Denver Founded 2010 Boutique

Practice focus: Tax controversy, IRS audits

Boutique Denver tax controversy practice.

Fee structure
Hourly / Flat
Free consultation
Initial $
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6

Moskowitz Law Firm

📍 Denver Founded 2005 Boutique

Practice focus: Tax resolution, IRS audits

Denver tax resolution boutique.

Fee structure
Hourly / Flat
Free consultation
Free
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7

Polsinelli (Tax)

📍 Denver Founded 1972 BigLaw

Practice focus: Tax planning, controversy, transactional

AmLaw 100 firm with Denver tax practice.

Fee structure
Hourly
Free consultation
Initial $
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8

Snell & Wilmer (Tax)

📍 Denver Founded 1938 BigLaw

Practice focus: Tax planning, controversy

Multi-state firm with Denver tax bench.

Fee structure
Hourly
Free consultation
Initial $
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9

Lewis Roca Rothgerber Christie (Tax)

📍 Denver Founded 1872 Mid-size

Practice focus: Tax controversy, business

Multi-state firm with Denver tax bench.

Fee structure
Hourly
Free consultation
Initial $
Request Free Consultation →
10

Greenberg Traurig (Denver Tax)

📍 Denver Founded 1967 BigLaw

Practice focus: Tax planning, controversy

AmLaw 50 firm with Denver tax practice.

Fee structure
Hourly
Free consultation
Initial $
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What to expect from a Denver tax matter

IRS audit: 6-18 months. Appeals: 6-12 months. Tax Court litigation: 18-36 months. Collections (offer in compromise, installment): 4-12 months.

What does a tax lawyer in Denver cost?

Hourly: $400-$900. Flat-fee for specific matters (offer in compromise $4,500-$10,000). Audit defense usually hourly.

Red flags to watch for when picking a tax lawyer in Denver

The legal directory you find on Google has thousands of Denver tax firms. Most are competent. A few are problematic. The patterns to avoid:

Guaranteed outcomes. No ethical attorney can guarantee a result. If a firm promises a specific recovery, dismissal, or visa approval, walk away.

The disappearing partner. You meet a senior partner at intake, then never speak to them again. The case is handled by an unsupervised junior or a paralegal. Ask in writing who will be your day-to-day attorney.

Pressure to sign immediately. Reputable firms give you the retainer in writing, time to read it, and the option to take it home. High-pressure intake is almost always a sign of a volume mill, not a craftsperson's practice.

No verifiable track record. The firm should be able to point to verdicts, settlements, peer rankings, or bar association recognition. "We've helped thousands of clients" is marketing copy. Specific numbers, named cases, and third-party rankings are evidence.

Vague fee terms. "Don't worry about cost" is a red flag. Every legitimate Denver lawyer will give you a written engagement letter with the fee structure, what's covered, what triggers extra charges, and what happens if you fire them.

10 questions to ask in your free consultation

Most Denver firms on this list offer a free initial consultation. Use it. Bring a list of questions and write down the answers. Compare across at least two firms before you sign.

  1. Who, specifically, will handle my case day-to-day? Get a name. Get an email.
  2. How many cases like mine have you handled in the last three years? You want a number, not a brochure line.
  3. What is your fee, and what does it cover? Get the answer in writing before you sign.
  4. What case expenses am I responsible for, and when? Out-of-pocket costs surprise people. Ask now.
  5. What is the realistic range of outcomes for a case like mine? A good lawyer will give you a range. A bad one will promise the high end.
  6. How long will it take? Honest estimate, with the assumptions stated.
  7. Who else might be involved? Experts? Co-counsel? Larger cases routinely involve outside experts. Know who's on the team.
  8. How and how often will I hear from you? Email-only? Calls? Monthly updates? Set the expectation now.
  9. What happens if I want to change lawyers later? Rules allow it; the fee is sorted between firms. Make sure you understand the mechanics.
  10. What's the worst-case outcome for my case? A lawyer who refuses to discuss downside risk is selling you something.

What's specific about a tax case in Denver

Denver is its own market. The procedure, the courts, and the strategy are city- and state-specific in ways that matter to your outcome.

Local courthouses matter. Denver District Court at the Lindsey-Flanigan Courthouse and the U.S. District Court for the District of Colorado have judges, calendars, and procedures that shape how cases move. A firm that knows the local courthouse has an advantage.

Filing deadlines are strict. Notice of Claim windows for cases against the City or County, Statute of Limitations periods, and pre-suit certification requirements vary by case type and are unforgiving. A missed deadline often means a lost case — full stop.

Local procedure rules matter. Each court has its own forms, motion practice, and judge preferences. The right Denver firm will know not just the law, but the unwritten rules of the courthouse you'll be in.

Local plaintiffs/defendants do well in front of local juries. Verdict patterns vary by venue, and a trial-capable firm uses venue strategically.

Frequently asked questions

Tax lawyer vs CPA?

CPA prepares returns. Tax lawyer represents you in disputes, audits, criminal investigations, court.

What's an offer in compromise?

Settle a tax debt for less than owed. IRS approves about 33%.

Can I go to jail for taxes?

Yes — willful evasion is a felony. Failure to file is also chargeable.

Cannabis tax?

Federal IRC §280E denies most deductions for cannabis businesses. Specialty counsel essential.

FBAR / offshore?

FBAR (Form 114) required if foreign accounts over $10K. Penalties severe.

One last thing. Choosing a lawyer is personal. Read the reviews. Call two or three firms before you sign. Ask each one: How many cases like mine have you taken to verdict in the last three years? The answer tells you everything. — The LawFirmSquare team