We make taxes less taxing so you can focus on running your business! + FORM
We concentrate and work only with small business owners to provide tax advice. Our firm specializes in helping your business maximize profits and pay the least amount of taxes legally possible.
Free Consultation
Tell us about your business and we'll evaluate your tax position.
Business Taxes & Compliance
Ensure 100% tax compliance
Business Tax Preparation
Accurate business tax returns
Strategic Planning
Pay the least legal taxes possible
Personal Attention
Dedicated bilingual advisors
Clear numbers, stronger business.
For many of us, income taxes are the biggest single expense that we have in our lives yet we don’t make an intentional effort to legally cut our tax bill.
Learn how to make sense of your cash flow, taxes, and accounting so your business not only survives, but actively supports the life you want.
We can help you:
- Maintain thorough knowledge of your financial records, sales taxes, and payroll obligations.
- Analyze your business model to optimize operational margins and maximize net profits.
- Legally slash your tax bill through proactive year-round deductions and structural strategies.
- Save money, prevent penalties, and avoid costly IRS or state audit red flags.
"Our professionals work towards achieving Optimum Financial and Tax Results for all of our clients!"
Trusted Local Tax & Advisory Firm
Comprehensive Business Solutions
Explore our core services designed specifically for small and mid-sized business owners in the Greater Chicago area and Suburbs.
Tax Preparation & Filing
Accurate, audit-ready tax filing for LLCs, S-Corporations, C-Corporations, Partnerships, Solopreneurs and non profit organizations.
- Corporate Returns (1120 / 1120S)
- Partnership Returns (1065)
- Add 990s and state filing requirements
View Tax Services
Business Analysis
Keep your financial statements crystal-clear with reconciliations, cash-flow reports, and P&L analysis.
- Bank & Credit Reviews
- Quarterly Profit & Loss Reports
- QuickBooks / Cloud Setup
View Business Analysis
Tax Planning & Advisory
Strategic financial guidance to structure your entity, minimize tax liability, and make confident business growth decisions.
- S-Corp Election Evaluation
- Annual Tax Strategy Roadmaps
- Cash Flow & Profit Advisory
More about seeing what the right fit would be for the client what bus model makes the most sense
View Advisory
5 Big Reasons Business Owners Rely On Us
We deliver the accuracy, predictability, and peace of mind your business deserves.
01
Certainty When We File
Eliminate anxiety. Every return undergoes rigorous cross-checking before submission so you can file with absolute confidence.
02
Always By Appointment
No waiting in crowded lobbies. You receive dedicated 1-on-1 focus from our senior tax professionals scheduled around your busy day.
03
Transparent Prices
No surprise hourly bills or unexpected fees. We provide upfront, transparent pricing before any work begins.
04
Personalized Solutions
Every small business is unique. We tailor our bookkeeping, tax, and strategy to match your specific industry and goals.
05
Expert Tax Support
We don't vanish after April 15. We are available year-round to answer IRS letters, state notices, and strategic questions.
Cuentas Claras Podcast & Educational Videos
Learn practical tax strategies and financial insights directly from our expert team.
Cuentas Claras
By Optimum Business Services
Our educational series dedicated to Spanish and English speaking business owners. We break down complex IRS regulations, tax reform changes, cash flow management, and practical strategies into simple, actionable steps.
- How to legally pay the minimum legal tax
- Setting up LLCs vs S-Corporations in Illinois
- Avoiding costly sales tax and payroll mistakes
What Local Business Owners Say
Hear from real entrepreneurs across Greater Chicago who partner with Optimum Business Services.
Working Hours
Monday & Wednesday: 10:00 AM – 4:00 PM
Tuesday – Saturday: By appointment only
Sunday: Closed