A small business accountant built around Illinois’s tax rules.
Monthly bookkeeping, QuickBooks, payroll coordination, and Illinois sales tax (the 6.25% state rate plus local rates) for Illinois small businesses — your TechBrot team on your file, fixed-fee, all 102 counties.
If your file needs our paid diagnostic first, its fee is credited in full against the cleanup. Either way, you get a fixed fee in writing before any work starts.
Illinois rule: Illinois taxes net income at 4.95% for individuals, including an owner’s share of pass-through profit, and 7% for corporations; QuickBooks keeps owner draws and distributions out of expenses so that net income is right. Source: IDOR, income tax rates.
For Illinois small businesses, TechBrot keeps QuickBooks reconciled and CPA-ready every month for a fixed fee of $500–$2,500+/mo: sales tax by jurisdiction (6.25% state plus local), Illinois net income tracked for the PPRT (1.5% even for pass-throughs), payroll coordinated, and your CPA files the 4.95% income tax.
They took something that felt overwhelming to me as a first-year business owner and made it simple.
What stood out the most was TechBrot Inc’s attention to detail.
Three Illinois facts every small business’s books must reflect.
Illinois layers an entity-level tax and Chicago-specific taxes on top of the basics — these three shape your chart of accounts and sales-tax setup.
The Personal Property Replacement Tax
Illinois imposes an entity-level Personal Property Replacement Tax on net income — 2.5% for C-corps, 1.5% for S-corps, partnerships, and trusts. Even small pass-throughs owe the 1.5% at the entity level, which surprises owners new to Illinois. We track Illinois net income cleanly; your CPA computes and files.Chicago’s layered sales tax
Illinois sales tax is 6.25% state plus county, home-rule and transit add-ons by location — the Cook County transit (NITA) portion rose to 1.25% on August 1, 2026 — destination-based for remote sellers. We configure the correct combined rate by jurisdiction in QuickBooks so the return ties.Chicago taxes SaaS at 15%
Whether software or SaaS is taxable under Illinois sales tax is your CPA’s determination — but Chicago has its own tax, its lease/“cloud” tax, 15% as of January 2026, which can apply to non-possessory computer leases. Where a small SaaS firm with Chicago customers collects it, it is tracked separately from sales tax. It’s a City of Chicago tax, not a state one.The whole back office, one dedicated team.
Scoped to your business and delivered in your own QuickBooks file by your TechBrot team, with every close reviewed by a Certified QuickBooks ProAdvisor.
Monthly bookkeeping & close
QuickBooks setup & cleanup
Sales tax, configured right
PPRT & PTE tracked
Payroll coordination
Advisory, when ready
What we do — and what we don’t.
What TechBrot does
- Keep your QuickBooks Online or Desktop file reconciled and current every month
- Build and maintain an Illinois-correct chart of accounts
- Configure combined sales tax by jurisdiction (the 6.25% state rate plus local rates) and reconcile it
- Track Illinois net income for the PPRT and structure the books for the PTE election
- Track Chicago’s lease/cloud tax separately where it applies
- Coordinate Illinois payroll (4.95% withholding, IDES) and prepare CPA-ready statements
What your CPA does
- File Illinois income tax, the PPRT, sales tax, or the PTE election
- File Chicago city taxes or federal returns
- Represent you before the Illinois Department of Revenue or the City of Chicago
- Provide legal or tax advice
- Step 1
Free file review
A QuickBooks ProAdvisor reviews your QuickBooks file and your Illinois situation at no cost. - Step 2
Written fixed-fee scope
Within 3 business days you get a written scope and fixed fee. No hourly billing. - Step 3
Cleanup to CPA-ready
If the file needs it, we bring it to a CPA-ready standard — sales tax corrected by jurisdiction, Chicago cloud tax separated, accounts reconciled. - Step 4
Monthly cadence
Your senior bookkeeper keeps the file clean every month and hands CPA-ready statements to your CPA, with every close reviewed by a Certified QuickBooks ProAdvisor before it reaches you.
Automation handles the data entry. We handle the judgment.
Most Illinois small businesses don’t need a full-time accountant — they need clean books, sales tax tracked correctly by jurisdiction, the PPRT net income supportable, any Chicago cloud-tax exposure handled, and a named expert who knows their file. That’s exactly the gap a fixed-fee QuickBooks ProAdvisor fills.
Start with accurate books, then extend — when you’re ready — into fractional-CFO advisory including PPRT/PTE planning, in coordination with your CPA.
Around Illinois.
Illinois QuickBooks ProAdvisor & bookkeeping
The state page: services, industries, cities and the Illinois tax terms in one place.Small-business accountant, nationally
The national engagement this page is the Illinois version of — same scope, same written fixed fee.Also in Illinois
Illinois cities
Not sure where your file stands? Start with the free QuickBooks file review · how Illinois compares: state-by-state tax quirks.
Illinois small business accountant questions.
What does an Illinois small business accountant do?
Keeps your books in your own QuickBooks file to an Illinois standard — categorization and reconciliation, a clean chart of accounts, combined sales tax by jurisdiction (the 6.25% state rate plus local rates) configured and reconciled, Illinois net income tracked for the PPRT, Chicago’s cloud tax handled where it applies, payroll coordination, and CPA-ready statements every month.
What Illinois taxes does a small business owe?
Illinois has a flat 4.95% income tax, the Personal Property Replacement Tax on entity net income (1.5% for most small pass-throughs, 2.5% for C-corps), 6.25%-plus-local sales tax by jurisdiction, and — for SaaS sold to Chicago customers — Chicago’s 15% lease/cloud tax. Illinois also offers the optional PTE election.
Do small pass-through businesses owe the PPRT?
Yes. S-corporations, partnerships, and trusts owe the 1.5% Personal Property Replacement Tax at the entity level even though they’re pass-throughs — an Illinois-specific obligation that surprises owners new to the state. We track Illinois net income cleanly so it’s supportable, and your CPA computes and files it.
Do you serve my city or county?
All 102 Illinois counties — Chicago and the collar counties, Aurora, Naperville, Joliet, Rockford, Springfield, and everywhere downstate — delivered remotely on QuickBooks. Your location changes the sales-tax jurisdiction and any Chicago city taxes, never the service or the ProAdvisor.
How much does it cost?
Fixed-fee against a written scope, never hourly. Monthly bookkeeping runs $500–$2,500+/mo by volume and accounts; one-time bookkeeping cleanup runs $1,200–$15,000+. Exact fee in writing within 3 business days of a free discovery call and the file information needed to quote.
Checked against the Illinois Department of Revenue and the City of Chicago Department of Finance.