Illinois replacement tax, Chicago costs and clear books

Fractional CFO & CPA Services in Illinois

Illinois has a flat income tax, but pass-through businesses also face the Personal Property Replacement Income Tax and Chicago adds its own costs. NexusWorks provides CPA-led bookkeeping, tax and CFO services to Illinois companies remotely.

Chicago to Aurora, served remotely

Illinois filings tracked for you

No long-term contracts

On-Time Delivery

99.7 %

Acceptance Rate

95 %

Completed Projects

200 +

Client Engagements

100 +

Accounting and CFO Services for Illinois Companies

Chicago trading firms, manufacturers, logistics companies and healthcare groups need accurate monthly reporting and careful tax planning. We handle accounting, replacement tax, Illinois's elective pass-through entity tax and federal planning.

Bookkeeping & Accounting

Best For:

Illinois businesses that want accurate books every month

Fractional CFO Services

Best For:

Manufacturing businesses planning their next stage

Tax Planning & Strategy

Best For:

Profitable Illinois businesses paying more tax than they should

Tax Compliance & Filing

Best For:

Owners who want Illinois deadlines tracked for them

Illinois Tax Strategy

Illinois tax planning includes state income tax, the Personal Property Replacement Income Tax and the pass-through entity election. We model these together so owners understand their true combined tax cost.

Personal Property Replacement Tax

Illinois LLCs taxed as partnerships pay a 1.5% replacement tax at the entity level. We include it in every estimate.

Pass-Through Entity Election

Illinois allows an elective PTE tax. We model whether paying at the entity level lowers combined tax for owners.

Chicago Local Taxes

Chicago businesses can face local taxes on leases, amusements and more. We identify what applies to you.

Trusted CPA & Fractional CFO Services in Illinois

Illinois businesses in Chicago, Naperville, Springfield and beyond operate in finance, manufacturing, logistics, food and professional services. The state combines income tax with a Personal Property Replacement Income Tax on businesses, plus complex local sales taxes. NexusWorks helps Illinois companies stay compliant and plan taxes proactively.

Looking for specialized help? See our healthcare CPA services for Illinois practices.

CPA advising a business owner on financial reports
Industries We Serve

Industries We Serve in Illinois

We serve Illinois manufacturers, logistics companies, food and consumer brands, financial and professional services firms, and real estate investors in Chicago, Naperville and across the state.

Professional Firms

Consultants and professional practices across Illinois get clean books, billing reports and planning for partners.

Real Estate Businesses

Illinois rental owners and developers get clean records by property and help with cost segregation decisions.

Multi-State Businesses

Out-of-state companies expanding into Illinois get registration, payroll and tax setup handled.

eCommerce & Digital Businesses

Digital businesses in Chicago get revenue recognition and sales tax tracking across states.

Healthcare

Clinics and practice groups across Illinois get monthly reporting that tracks collections and overhead.

High-Income Business Owners

Illinois's flat income tax keeps state planning simple, so we focus on federal savings, retirement plans and timing for high earners.

Why Illinois Businesses Choose NexusWorks

We plan for Illinois's replacement tax that many owners do not expect.

CPA-led oversight on every engagement, so work is reviewed before it reaches you.

Clients in Chicago, Naperville and beyond work with us online.

Integrated accounting, tax and advisory under one roof.

Monthly reporting and clear pricing with no long-term contracts.

Request An Instant Consultation

Or Call Us Today At +1 310-810-1790

What Business Owners
Say About Nexus

Trusted by 200+ happy
customers & counting

Areas we cover

Illinois Business Coverage

We work with businesses across Illinois, including Chicago, Naperville, Aurora, Springfield and Peoria, using video calls and secure online tools.

Major Business Cities

Parks
High Schools
Key Landmarks
Colleges / Uni
Charities
Key Roads

Plan Illinois Taxes Before They Surprise You

Book a call to review replacement tax, PTE elections and bookkeeping for your Illinois company.

Why Businesses Work With

NexusWorks

Senior CPA review on every file
One team for books, taxes and CFO work
SOC 2 Type II secure systems
No long-term contracts
Video meetings for Illinois clients

Frequently Asked Questions

NexusWorks accounting team answering client questions

Yes. We offer monthly bookkeeping, account reconciliation, financial reporting, and payroll support for Illinois businesses of all sizes.

Yes. We serve businesses across all 50 states, so Illinois companies get bookkeeping, tax, and advisory services remotely through secure systems and digital communication.

Illinois charges corporations, partnerships, S corporations and trusts a Personal Property Replacement Income Tax in addition to regular income tax. It applies at the entity level, so it affects how pass-through businesses plan. We include it in your tax planning and returns.

Chicago and Cook County add their own taxes on top of state sales tax, including taxes on certain leases, services and amusements. We help businesses identify which local taxes apply and keep filings accurate.

Yes. Illinois allows partnerships and S corporations to elect to pay state income tax at the entity level, which may help owners with the federal SALT cap. We model the impact before you elect.

Illinois has a flat state income tax and a 6.25% state sales tax. LLCs here generally face an annual report. Also note that partnership-taxed LLCs also pay the Personal Property Replacement Income Tax. We map which of these apply to your business and add each one to your compliance calendar.

It is an extra income tax on partnerships, S corporations and corporations in Illinois. LLCs taxed as partnerships pay 1.5% of net income. We include it in planning and filings.

We start with a call to review your books and filings, then set up secure document sharing and a monthly schedule. Illinois clients meet with us by video; our office is in Torrance, California.