About Lathrop GPM LLP — Tax Law Chicago Illinois
Lathrop GPM LLP provides tax law Chicago services through its local office. The firm formed in 2020 by combining two firms with 100-plus-year histories. It now has nearly 400 attorneys in 14 offices nationwide. Cook County clients benefit from that broad reach and deep roots. Because tax shapes many business decisions, the team integrates it into its work. The firm responds to client needs at local, state, and national levels.
The practice covers business tax planning, transactions, and related matters. In addition, it advises on corporate and commercial issues with tax effects. Many Chicago companies value a firm with Midwestern roots and national scope. You can also compare other tax law firms in the directory. However, a firm of this size can handle complex, multistate tax work.
Why Choose Lathrop GPM LLP
Lathrop GPM brings nearly 400 attorneys across 14 offices. That scale helps Cook County businesses with complex tax needs. The firm has strong Midwestern roots and national reach. Because it responds at local, state, and national levels, it fits varied matters. Chicago clients get broad, coordinated counsel.
Tax Law Chicago — Practice Areas & Services
- Business tax planning — structuring matters for Cook County companies.
- Transactional tax — guidance within deals and reorganizations.
- Multistate tax — coordinating obligations across the firm’s 14 offices.
- Corporate counsel — tax advice within broader business work.
Frequently Asked Questions
Why choose a large firm for Chicago tax work?
Large firms bring depth across tax and related areas. That helps with complex or multistate matters. Local offices still ensure Illinois rules are applied correctly.
How does tax planning support a business deal?
Deal structure drives the tax outcome. Early planning can lower the overall cost. Tax counsel works with the corporate team from the start.
What multistate tax issues affect Chicago companies?
Operating in several states can create tax duties in each. Nexus and apportionment rules apply. A national firm helps you stay compliant across states.
Quick Facts: Tax Law in Chicago, Illinois
- Property tax appeals: Cook County owners can appeal assessments through the Assessor and Board of Review — Cook County Assessor
- State income tax: Illinois levies a flat individual income tax rate set by the General Assembly — Illinois Dept. of Revenue
- IRS office: Chicago hosts an IRS Taxpayer Assistance Center downtown — Internal Revenue Service


