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Practice × location ranking

Best Tax Planning & Controversy law firms in Chicago

Grouped into editorial tiers — words, never scores. No paid placement and no numeric rank; within a tier the order rotates monthly and carries no meaning.

Last verified 22 Jul 2026 · Next review by 22 Aug 2026 · Change log

Direct answer & research summary

Best Tax Planning & Controversy law firms in Chicago are tiered by Sartori & Partners from public footprint as of July 2026, not from a numeric score: 11 firms sit on this board. Sartori & Partners has completed 400+ placements since 2017 (230+ in-house), including 52 general counsel and chief legal officer searches, with a median of 11 weeks from brief to accepted offer. A NASDAQ-listed medtech in Boston accepted its successor general counsel in week 11, from a shortlist of four at day 24.

01 — The ranking

The Chicago Tax Planning & Controversy board

A tier on this Chicago Tax Planning & Controversy board names relative firm standing in words. Placement speaks to federal and state tax structuring, IRS and state controversy, and high-stakes tax disputes across this Midwest commercial hub; order inside each band carries no hierarchy and is not a score.

CHICAGO × TAX PLANNING & CONTROVERSY11 FIRMS · NO SCORESREV. 2026-07
REFFIRMCHICAGO TAX PLANNING & CONTROVERSY BANDSIGNAL
TIER 1 — MARKET LEADERS2 FIRMS

The top editorial band for the best Tax Planning & Controversy law firms in Chicago: firms that set the tone for tax planning, controversy strategy and multi-jurisdiction fiscal work at scale in Chicago. Within-tier sequence rotates and is not a ranking.

T1·01 ArentFox Schiff25–49 attorneys mapped · major local depth 25–49 ATTORNEYS FLAT → EVID ↓
T1·02 Baker McKenzie25–49 attorneys mapped · major local depth 25–49 ATTORNEYS FLAT → EVID ↓
TIER 2 — HIGHLY ACTIVE6 FIRMS

Highly active on the Chicago Tax Planning & Controversy board means consistent tax-advisory and controversy presence and peer recognition short of the leader set. No numeric score is assigned.

T2·01 Much Shelist10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T2·02 Neal Gerber & Eisenberg10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T2·03 Chapman and Cutler10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T2·04 Kirkland & Ellis25–49 attorneys mapped · major local depth 25–49 ATTORNEYS FLAT → EVID ↓
T2·05 Levenfeld Pearlstein10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T2·06 Mayer Brown10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
TIER 3 — ESTABLISHED3 FIRMS

This band covers firms with solid Tax Planning & Controversy standing and mapped benches in Chicago, without the intensity of the tiers above. Within-tier order is deliberately flat.

T3·01 Sidley Austin10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T3·02 Thompson Coburn10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T3·03 Loeb & Loeb10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓

All counts are shown as bands, never precise headcounts. Notable firms sit outside the tiers by design: verified minimal presence, not assessed at full tier depth.

Hiring in Chicago?

We map this market every day.

The evidence behind these tiers is the same intelligence we use to run retained searches for partners, groups and senior associates.

02 — Evidence, methodology & sources why each firm · how tiers are set · sources · change log · verified 22 Jul 2026 · next review 22 Aug 2026

Firm evidence

Tier 1 — Market leaders Open firm profile →

ArentFox Schiff

ArentFox Schiff is placed in market leaders for Tax Planning & Controversy in Chicago. Public mapping (banded): 25–49 attorneys, major local depth, ≈15 partners · 5 counsel · 5+ associates. Evidence gates — office (G1) PASS, local practice (G2) PASS, recent signal (G3) PASS. The placement carries no numeric score.

Strongest mapped work

Litigation & DisputesPrivate Client & Estate PlanningEnvironmental

Public hiring signal

Hiring signal: FLAT — no public hiring change detected in the mapping window.

Limits of this assessment

  • —A tier is Sartori’s editorial opinion, not a fact about the firm or a client-satisfaction measure.
  • —Facts are mapped from public sources and shown as bands; they lag reality by weeks or months.
  • —No third-party legal-directory band is used as an input.

Sources for this entry

Methodology

How tiers are assigned

Deterministic public-footprint core (local depth, practice share, seniority mix, public hiring momentum), computed relative to this market's own distribution. Tier placement is derived from this public mapped data; a per-firm public-source ledger is compiled for firms in the annual research pass and applies to those firms' factual claims, not to tier membership. No third-party legal-directory bands are used as an input.

Market scope

10–24 firms earn a tier in Chicago within this scope (banded).

Disclosures

Firm names used nominatively (factual). All counts shown as bands, never precise headcounts. No firm logos. Report an error via the site contact form.

Sources & change log

  1. 1 Chicago | ArentFox Schifffirm_website · G1 · 2026-07-21
  2. 2 ArentFox Schiff — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  3. 3 ArentFox Schiff — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  4. 4 United States | Locations | Baker McKenziefirm_website · G1 · 2026-07-21
  5. 5 Baker McKenzie — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  6. 6 Baker McKenzie — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  7. 7 Offices - Much Shelist, P.C.firm_website · G1 · 2026-07-22
  8. 8 Much Shelist — attorney bios & practice pagesfirm_website · G2 · 2026-07-22
  9. 9 Much Shelist — Chicago news & announcementsfirm_website · G3 · 2026-07-22
  10. 10 Our Office | Neal, Gerber & Eisenberg LLPfirm_website · G1 · 2026-07-22
  11. 11 Our Story | Neal, Gerber & Eisenberg LLPfirm_website · G2 · 2026-07-22
  12. 12 Client Services | Neal, Gerber & Eisenberg LLPfirm_website · G2 · 2026-07-22
  13. 13 Neal Gerber Eisenberg to Move to Chicago Landmark Building in 2025 | Neal, Gerber & Eisenberg LLPfirm_website · G3 · 2026-07-22
  14. 14 Neal Gerber Eisenberg Achieves LEED Platinum Certification for New Office at The Bell | Neal, Gerber & Eisenberg LLPfirm_website · G3 · 2026-07-22
  15. 15 Offices: Chapman and Cutler LLPfirm_website · G1 · 2026-07-21
  16. 16 Chicago: Chapman and Cutler LLPfirm_website · G1 · 2026-07-21
  17. 17 Chapman and Cutler — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  18. 18 Futures and Derivatives Law Committee (12/17/25) | Chicago Bar Association Learningpress · G3 · 2026-07-21
  19. 19 Contact us | LPfirm_website · G1 · 2026-07-22
  20. 20 Real Estate Group | LPfirm_website · G2 · 2026-07-22
  21. 21 Corporate Group | LPfirm_website · G2 · 2026-07-22
  22. 22 Financial Services & Restructuring Group | LPfirm_website · G2 · 2026-07-22
  23. 23 Levenfeld Pearlstein — Chicago news & announcementsfirm_website · G3 · 2026-07-22
  24. 24 Offices | Thompson Coburn LLPfirm_website · G1 · 2026-07-21
  25. 25 Chicago | Thompson Coburn LLPfirm_website · G2 · 2026-07-21
  26. 26 Thompson Coburn — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  27. 27 Locations | Loeb & Loeb LLPfirm_website · G1 · 2026-07-21
  28. 28 Loeb & Loeb — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  29. 29 Loeb & Loeb — Chicago news & announcementsfirm_website · G3 · 2026-07-21
22 Jul 2026 Scope-aware market-relative core assembled.
22 Jul 2026 29 verified source(s) ingested for the researched firms; tier placement comes from our own market data so unresearched visible firms do not block approval → APPROVED (auto).
Report an error in this ranking →

04 — Questions

About this ranking

Who are the best Tax Planning & Controversy law firms in Chicago?

Who leads Tax Planning & Controversy work in Chicago? As of July 2026, Market leaders are ArentFox Schiff, Baker McKenzie. Sartori does not name a single number-one firm; the gap inside Tier 1 is treated as unmeasurable, and the wider board of 11 firms uses worded tiers only.

Is ArentFox Schiff the best Tax Planning & Controversy law firm in Chicago?

ArentFox Schiff sits in Tier 1 — Market leaders — of Sartori's Chicago Tax Planning & Controversy board as of July 2026, alongside Baker McKenzie. Sartori does not name a single #1: the gap between Tier 1 firms is genuinely unmeasurable, and a numeric score would be false precision.

Which firms have the biggest Tax Planning & Controversy benches in Chicago?

By mapped Chicago bench, the largest firms on this board are ArentFox Schiff, Baker McKenzie, Kirkland & Ellis (25–49 mapped lawyers each). All counts are bands, never precise headcounts.

Which Tax Planning & Controversy teams are hiring in Chicago?

As of July 2026, no firm on this board shows a public hiring signal in the mapping window. Live Chicago mandates are listed on Sartori's jobs board.

What is a Tier 1 law firm?

In Sartori's rankings, Tier 1 — Market leaders — is an editorial judgement expressed in words, never a score: the firms whose Chicago bench depth, seniority mix and market standing set the reference point for the market. As of July 2026 that is ArentFox Schiff, Baker McKenzie. Within the tier no firm outranks another.

Which are the best law firms in Chicago overall?

Sartori's overall Chicago board groups 25 firms into editorial tiers; as of July 2026 its Tier 1 is Jenner & Block, Katten Muchin Rosenman, Kirkland & Ellis, Mayer Brown, Sidley Austin, Winston & Strawn, DLA Piper. See /firms/in/chicago/.

See the ranking →

This ranking is compiled independently by Sartori from public sources. Tiers are Sartori’s editorial opinion, expressed without numeric scores; firms are named for identification only, no logos are reproduced, and no firm has paid for or approved its placement. No third-party legal-directory band is used as an input. Nothing here is legal advice or a recommendation to instruct counsel.