Entrepreneurs in Chicago, IL: taxes and retirement for 2026

For solo founders and small-business owners in Chicago, IL. Illinois has a flat 4.95% state income tax for 2026. Here are the 2026 rules, a worked example and the official sources.

What's different in Chicago

Local income tax: No city income tax in Chicago.
City business license: A City of Chicago business license (Home Occupation license) is required to run a business out of your home; it is issued for two years, the city lists a $1,000 fee, and some activities cannot be licensed as home occupations.
Chicago Transportation Network Provider Ordinance (Municipal Code Chapter 9-115): Rideshare drivers for Uber, Lyft, and other TNP companies must be affiliated with a licensed TNP company and obtain a City of Chicago TNP Chauffeur License and TNP Vehicle Registration Emblem before driving in Chicago.
Illinois Freelance Worker Protection Act (statewide, 820 ILCS 193): Independent contractors who provide products or services in Illinois, or for a hiring entity located in Illinois, are covered when the work is worth $500 or more in a 120-day period. They are entitled to a written contract and to full payment by the contract due date, or within 30 days of completing the work if no date is set; the law applies to contracts taking effect after July 1, 2024.
Also worth knowing: No city income tax: under the Illinois Constitution (Article VII, Section 6(e)), home-rule units like Chicago may impose taxes on or measured by income or earnings only as the General Assembly provides by law, and no Chicago income tax exists. As of January 6, 2026, the city's Ground Transportation Tax on TNP companies is $1.13 per single ride, plus $1.50 for rides with a pickup or drop-off in a Congestion Zone from 6 a.m. to 10 p.m. seven days a week and $5.00 for O'Hare, Midway, Navy Pier, or McCormick Place rides (https://www.chicago.gov/city/en/depts/fin/supp_info/revenue/tax_list/ground_transportationtax.html). For employees such as servers and bartenders, the Chicago minimum wage is $17.05 per hour and the tipped minimum wage is $12.96 as of July 1, 2026, for employers with 4 or more employees (https://www.chicago.gov/city/en/depts/bacp/supp_info/minimumwageinformation.html).

Illinois rules for entrepreneurs

State income tax (2026): Illinois has a flat 4.95% state income tax for 2026. The 2026 IL-1040-ES worksheet computes tax as net income times 4.95%.
State estimated tax: You must make estimated payments if you reasonably expect your 2026 Illinois tax liability to exceed $1,000 after Illinois withholding, pass-through withholding, and allowed credits. Same dates as federal (April 15, June 15, and September 15, 2026, and January 15, 2027). Form IL-1040-ES.
Freelance Worker Protection Act (820 ILCS 193): Covers independent contractors who provide products or services in Illinois, or work for an Illinois hiring entity, when the work is worth $500 or more over 120 days. Applies to contracts that took effect after July 1, 2024. Covered freelancers get a written contract, full payment by the contract due date (or within 30 days of finishing if no date is set), and protection from retaliation.
Employee Classification Act (construction, 820 ILCS 185): People doing construction work for a contractor are presumed to be employees unless all three parts of a test are met: free from control, outside the contractor's usual course of business, and an independently established business. Civil penalties run up to $1,500 per person per day, doubled for willful violations, and up to $2,500 per violation for repeat violations.
Unemployment Insurance Act ABC test: For unemployment insurance, a worker is an employee unless all three are true: free from control or direction, work outside the usual course or places of the business, and engaged in an independently established trade or business.
State retirement program: My Illinois Savings (formerly Illinois Secure Choice) is live. It is built around W-2 employers and does not cover 1099 contractors through the employer mandate; self-employed residents can enroll on their own.

Federal rules for 2026

Entity choice changes your taxes

A single-member LLC is taxed like a sole proprietorship unless it elects S-corp status. The S-corp can lower payroll tax but adds payroll, a separate return and a reasonable-salary requirement.

Retirement as a tax lever

With no employees, a Solo 401(k) allows up to $72,000 in 2026. With employees, a SEP IRA or a 401(k) must generally cover eligible staff too.

Quarterly estimated taxes

No one withholds tax from self-employment income, so you generally pay estimates four times a year if you expect to owe $1,000 or more. For 2026 income the federal dates are April 15, June 15 and September 15, 2026, and January 15, 2027. Paying 100% of last year's tax (110% if your AGI was over $150,000) in four equal installments avoids the underpayment penalty.

Self-employment tax

On top of income tax, self-employed people pay 15.3% on 92.35% of net profit: 12.4% Social Security up to the 2026 wage base of $184,500, plus 2.9% Medicare with no cap. Half of it is deductible.

A worked example

A solo founder with $200,000 of profit in 2026
Self-employment tax as a sole proprietor	$28,234
Solo 401(k) maximum as a sole proprietor	$61,677
Payroll tax saved as an S-corp on a $100,000 salary	$12,934
Solo 401(k) maximum as that S-corp	$49,500

Federal figures only. S-corps add running costs (payroll, an 1120-S return, state fees) not shown here. Computed from 2026 IRS limits (Notice 2025-67, Rev. Proc. 2025-32) and the SSA wage base.

Free tools

S-corp vs Solo 401(k) calculator Solo 401(k) vs SEP IRA calculator Quarterly tax calculator

Guides by job and platform

Solo founders Small business owners Online sellers Food truck owners Self-Employed Workers

Amazon (Selling on Amazon) eBay Gumroad Kajabi

Questions

Is there a local income tax in Chicago?

No city income tax applies in Chicago. Illinois has a flat 4.95% state income tax for 2026.

Do I need a business license to freelance from home in Chicago?

A City of Chicago business license (Home Occupation license) is required to run a business out of your home; it is issued for two years, the city lists a $1,000 fee, and some activities cannot be licensed as home occupations.

What Chicago rules protect gig workers and freelancers?

Chicago Transportation Network Provider Ordinance (Municipal Code Chapter 9-115): Rideshare drivers for Uber, Lyft, and other TNP companies must be affiliated with a licensed TNP company and obtain a City of Chicago TNP Chauffeur License and TNP Vehicle Registration Emblem before driving in Chicago. Illinois Freelance Worker Protection Act (statewide, 820 ILCS 193): Independent contractors who provide products or services in Illinois, or for a hiring entity located in Illinois, are covered when the work is worth $500 or more in a 120-day period. They are entitled to a written contract and to full payment by the contract due date, or within 30 days of completing the work if no date is set; the law applies to contracts taking effect after July 1, 2024.

Do entrepreneurs in Illinois pay state income tax?

Illinois has a flat 4.95% state income tax for 2026. The 2026 IL-1040-ES worksheet computes tax as net income times 4.95%.

When are Illinois estimated tax payments due for 2026?

You must make estimated payments if you reasonably expect your 2026 Illinois tax liability to exceed $1,000 after Illinois withholding, pass-through withholding, and allowed credits. Same dates as federal (April 15, June 15, and September 15, 2026, and January 15, 2027). The state form is IL-1040-ES.

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Sources

State and local facts researched from official sources and independently re-checked; last verified October 2026, next scheduled review 2027-01-02. Educational information for 2026, not tax, legal or investment advice. Rules change; check the official sources listed and a tax professional for your situation. Gigaverse AI, Inc. is a financial technology company, not a bank, and not itself a registered investment adviser or broker-dealer.