IRS audit, collection notice, or tax court case in St Louis? Get a tax attorney - not a CPA or enrolled agent.
St Louis IRS matters run through the IRS Office of Appeals in Kansas City, the U.S. Tax Court (rides circuit through St Louis), and the U.S. District Court for the Eastern District of Missouri (for refund cases and criminal tax). The 10 firms below have verifiable St Louis tax-controversy practices, with attorneys admitted to the U.S. Tax Court.
IRS work is its own specialty. CPAs and enrolled agents can handle most filings and even some audits, but only attorneys have attorney-client privilege, can litigate in U.S. Tax Court at a sophisticated level, and can defend criminal tax investigations. The 10 firms below split into two groups: BigLaw and mid-size firms for complex transactional tax and high-dollar controversy, and boutique tax firms focused on individual and small-business IRS resolution.
These firms are filtered against Best Lawyers Best Law Firms 2026 Tax Law, Super Lawyers Missouri Tax, Avvo, Justia, and U.S. Tax Court admission records. The list spans BigLaw teams for complex corporate tax matters down to boutique firms focused exclusively on IRS resolution for individuals and small businesses.
How we picked these 10: We reviewed peer rankings (Chambers USA, Best Lawyers, Super Lawyers, Avvo, Martindale-Hubbell, Justia), bar association recognition, and published case results. Firms that appeared consistently across at least two independent sources made the list. We do not accept payment for placement, and we do not write sponsored reviews. More on our methodology →
Practice focus: Federal tax controversy, transactional tax, international tax, state and local tax, partnership tax
St Louis-HQ global firm. Sophisticated tax practice across federal, international, and state and local tax. Useful for high-net-worth individuals and corporations with complex tax exposure. Chambers USA Missouri Tax.
Practice focus: Federal tax controversy, audit defense, IRS appeals, tax court litigation, partnership tax, state and local tax
St Louis-HQ regional firm. Strong federal tax controversy bench. Frequently retained for corporate audits and high-stakes IRS appeals. Best Lawyers Best Law Firms Tax recognition.
Practice focus: Tax controversy, transactional tax, partnership tax, exempt organization tax, state and local tax
St Louis-HQ firm. Deep tax practice covering planning and controversy. Useful for middle-market and closely held businesses with complex tax structures.
Practice focus: Tax controversy, IRS appeals, transactional tax, partnership tax, executive compensation
St Louis-HQ firm. Strong tax controversy and transactional tax practice. Chambers USA Missouri recognition.
Practice focus: Federal and state tax controversy, audit defense, IRS appeals, estate tax, closely held business tax
St Louis-HQ firm. Strong middle-market and closely held business tax practice. Useful for family businesses and high-net-worth individuals.
Practice focus: Tax controversy, healthcare tax, exempt organization tax, partnership tax, transactional tax
AmLaw 100 firm. Particularly strong healthcare and life sciences tax bench. Useful when tax controversy touches regulatory issues.
Practice focus: Federal tax controversy, transactional tax, partnership tax, state and local tax
Mid-American firm. St Louis office handles federal and state tax matters for middle-market clients. 172 attorneys in Best Lawyers in America 2026.
Practice focus: Tax planning and preparation, IRS audit representation, tax debt resolution, offer in compromise, penalty abatement
St Louis boutique tax firm. Principal Mark C. Milton worked as a trial attorney for the DOJ Tax Division and represented the IRS in federal courts throughout the U.S. Useful for individual and small-business IRS resolution at non-AmLaw fees.
Practice focus: IRS audits and collections, Missouri Department of Revenue audits, tax fraud defense, criminal tax
41+ years of tax-focused practice in St Louis. 2,000+ tax cases handled. LLM in Taxation. Useful for individuals and small businesses facing IRS collection or criminal tax exposure.
Practice focus: IRS audit defense, tax court litigation, offer in compromise, installment agreements, payroll tax issues
Boutique IRS-resolution firm. Focused on individual and small-business federal tax controversy in the St Louis area. Useful for taxpayers facing collection or audit who want IRS-resolution-specific counsel.
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IRS audit (correspondence or office audit): 6 to 14 months from notice to closing letter. IRS field audit: 12 to 24 months. IRS Appeals: 6 to 12 months after the 30-day letter. U.S. Tax Court petition: 14 to 24 months from filing to trial. Offer in compromise: 9 to 12 months. Installment agreement: 30 to 60 days. Criminal tax investigation (CID): 18 to 36 months before charging decision. Federal tax lien release: 30 days after liability resolved.
St Louis ranges for 2026: IRS audit defense (correspondence) $2,500 to $7,500 flat; IRS office audit $5,000 to $20,000; field audit $15,000 to $75,000+; IRS Appeals $10,000 to $50,000; Tax Court petition through trial $25,000 to $200,000+; offer in compromise $3,500 to $10,000 plus application fee; installment agreement $1,500 to $5,000; criminal tax defense $50,000 to $500,000+; transactional tax opinion $5,000 to $50,000+. Hourly rates: $250 to $500 boutique, $400 to $850 mid/large firm, $600 to $1,200+ BigLaw partner.
Most St Louis firms doing this work are competent. A few patterns predict trouble.
Guaranteed outcomes. No ethical attorney can guarantee a result. If a firm promises a specific outcome, walk away.
The disappearing partner. You meet a senior partner at intake, then never speak to them again. The matter is handled by an unsupervised junior or paralegal. Ask in writing who will be your day-to-day attorney.
Pressure to sign immediately. Reputable firms give you the engagement letter 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 careful practice.
No verifiable track record. The firm should be able to point to verdicts, settlements, peer rankings, or bar recognition. Specific numbers, named matters, and third-party rankings are evidence. Brochure phrasing is not.
Vague fee terms. "Do not worry about cost" is a red flag. Every legitimate St Louis firm will give you a written engagement letter with the fee structure, what is covered, what triggers extra charges, and what happens if you change counsel.
Most St Louis firms on this list offer a free or low-cost initial inquiry call. Use it. Bring a list of questions and write down the answers. Compare across at least two firms before you sign.
For IRS audits where the dispute is over numbers, a CPA or enrolled agent is often enough. For IRS Appeals, Tax Court litigation, criminal tax investigations, fraud penalty defense, or any matter where attorney-client privilege matters, you need an attorney. CPAs do not have attorney-client privilege for tax-controversy work.
A settlement of an IRS tax debt for less than the full amount owed, based on the IRS's analysis of your reasonable collection potential (assets plus future income capacity). Acceptance rates are roughly 30 to 40% nationally. The 24-month review window means timing matters.
Tax Court is the only court that lets you challenge an IRS deficiency before paying it. You file a petition within 90 days of receiving a Statutory Notice of Deficiency. The court rides circuit and holds trial sessions in St Louis. Small tax cases ($50,000 or less per year) can use the small case procedure (no appeal).
IRS Appeals is an administrative process within the IRS - faster, less formal, and based on the strength of your factual and legal position. Tax Court is a federal court with formal procedure and judicial review. You can do Appeals first, then Tax Court if Appeals doesn't resolve.
Yes, in extreme cases - but the IRS rarely does. Federal tax liens attach to all your property; levies are the active seizure. Principal residences receive heightened procedural protection (collection due process hearings, judicial review). Most homeowners can negotiate installment agreements, offers in compromise, or currently-not-collectible status before levy.
10 years from assessment, plus tolling for periods when collection is stayed (offer in compromise pending, bankruptcy, hardship status). The 10-year collection statute is one of the strongest taxpayer protections in the Code.
File now, before the IRS files a substitute return (SFR) on your behalf. SFRs use single filing status and no deductions, which produces the worst possible tax result. Voluntary filing also opens the path to penalty abatement and Streamlined Filing for non-willful non-filers.
Sometimes. First-Time Penalty Abatement is available for taxpayers with a clean 3-year filing history. Reasonable cause abatement is available for penalties caused by circumstances beyond your control (serious illness, natural disaster, reliance on incorrect IRS advice). Documentation matters.
An IRS Criminal Investigation Division (CID) investigation that can result in federal criminal tax charges (tax evasion, willful failure to file, false return). If you receive a CID interview request, do not respond without counsel. Statements to CID agents can be used against you. Privilege issues are critical.
Yes. Missouri Department of Revenue audits and assessments go through the Administrative Hearing Commission for appeals, then Missouri circuit court. Missouri also has its own offer in compromise and installment agreement programs, separate from the IRS.
One last thing. Choosing a lawyer is personal. Read the reviews. Call two or three firms before you sign. Ask each one: How many matters like mine have you handled in the last three years? The answer tells you everything. — The LawFirmSquare team