CPA, tax & accounting services in Illinois
Nelson & Associates helps individuals and businesses across Illinois with tax preparation and planning, IRS problems, bookkeeping, payroll and advisory services, with CPAs who know Illinois rules.
What to know about taxes in Illinois
Illinois taxes individual income at a flat 4.95%, adds a replacement tax on business income, and has an estate tax with a $4 million exemption.
Illinois residents file a state return alongside the federal one, and people who move in or out during the year, or earn income across state lines, often need part-year or nonresident returns. We prepare federal and Illinois returns together so nothing is taxed twice.
What we handle for Illinois clients
- Federal individual and business returns, together with Illinois state returns
- Part-year and nonresident Illinois returns for people who move or commute
- Illinois sales and use tax registration, filing and audits
- Estate tax planning and filings for Illinois families
- IRS audits, back taxes, liens, levies and payment plans
- Bookkeeping, payroll and QuickBooks for local businesses
- Correspondence with the Illinois Department of Revenue
Illinois at a glance
- State tax agency
- Illinois Department of Revenue
- Income tax on wages
- Flat rate
- Statewide sales tax
- Yes
- Local income taxes
- Not common
- Estate / inheritance
- Estate tax
- Cities with pages
- 6
- Meetings
- Phone and video
Rates and thresholds change every year. Ask your CPA for the figures that apply to you.
Major cities we serve in Illinois
Chicago
Tax and accounting for Chicago, IL.
View ChicagoAurora
Tax and accounting for Aurora, IL.
View AuroraNaperville
Tax and accounting for Naperville, IL.
View NapervilleJoliet
Tax and accounting for Joliet, IL.
View JolietRockford
Tax and accounting for Rockford, IL.
View RockfordSpringfield
Tax and accounting for Springfield, IL.
View SpringfieldIllinois on the map
Compare how each state taxes income, sales and estates. Hover over neighboring states to see their rules; tap to open.
Popular services for Illinois clients
Individual Tax Preparation
Federal Form 1040 and any required state returns for employees, families, retirees and investors, prepared by a CPA firm and reviewed line by line.
Learn more Tax Preparation & PlanningBusiness Tax Preparation
Corporate, S corporation and partnership returns, plus Florida corporate income tax, prepared from clean books and filed on time.
Learn more Tax Preparation & PlanningTax Planning
Proactive, year-round strategies that legally reduce what you owe before the year ends, for individuals, owners and families.
Learn more IRS Tax Problems & ResolutionIRS Audit Representation
CPA representation before the IRS and state agencies for correspondence, office and field audits, through appeals.
Learn more IRS Tax Problems & ResolutionBack Taxes Owed
Practical solutions for unpaid federal tax balances, from penalty relief to payment plans and settlements.
Learn more Business Accounting & AdvisorySmall Business Accounting & Bookkeeping
Monthly bookkeeping, reconciliations and financial statements that keep your business accurate, tax-ready and easy to manage.
Learn moreAll 37 services available in Illinois
Tax Preparation & Planning
IRS Tax Problems & Resolution
Business Accounting & Advisory
Audit, Forensic & Litigation
Individuals & Families
Illinois FAQs
Do you have an office in Illinois?
Our office is in Doral, Florida. We serve Illinois clients remotely through secure document uploads, phone and video meetings and e-signatures, so you get a dedicated CPA without the travel.
Can you prepare my Illinois state return?
Yes. We prepare resident, part-year and nonresident Illinois returns alongside your federal return.
Can you help with the IRS if I live in Illinois?
Yes. IRS representation is federal, so with your signed Form 2848 our CPAs can represent you in audits, collections and appeals wherever you live.
Which Illinois cities do you serve?
We serve clients throughout Illinois, including Chicago, Aurora, Naperville, Joliet, Rockford, Springfield.
Is the first consultation free?
Yes. All initial consultations are free of charge.
Need a CPA in Illinois?
Your initial consultation is free. Call us, email us or visit our Doral office, and we’ll tell you exactly what you need and what it will cost.