Peoria, IL CPA Firm for S-Corps & Small Businesses

Looking for a CPA in Peoria? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to Peoria businesses specializing in S-Corps and partnerships. We provide upfront estimates — if scope changes, we discuss it first. Schedule a free consultation.
Serena Do, CPA — Managing Partner of SDO CPA

Serena Do, CPA

Managing Partner | Duncanville, TX (Serving Peoria Virtually)

18+ Years Experience | AICPA Member

Licensed CPA — Texas State Board of Public Accountancy

With 18+ years of experience helping business owners across the country, I bring specialized expertise to Peoria’s Heavy Equipment Manufacturing, Healthcare, Agriculture economy. Whether you’re managing Complex manufacturing cost accounting and equipment depreciation for heavy machinery suppliers and ag-related businesses or capitalizing on Caterpillar supply chain ecosystem creating steady vendor and subcontractor demand for specialized manufacturers, SDO CPA provides the virtual accounting support your business needs.

We offer cloud-based tax preparation, bookkeeping, payroll, and fractional CFO services designed for Peoria business owners who want proactive guidance — not just annual tax filing.

Key Takeaways: Peoria CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • Illinois tax expertise — Illinois has a flat 4.95% income tax plus Chicago city-level taxes planning and multi-state compliance
  • Industry focus — Specialized experience with Heavy Equipment Manufacturing, Healthcare, Agriculture
  • Transparent pricing — Upfront estimates starting at $300/month; if scope changes, we discuss it first
  • Responsive support — Direct CPA access, same-day responses

Accounting & Tax Services in Peoria, IL

Peoria has been synonymous with heavy equipment manufacturing since Caterpillar Inc. established its global headquarters here, and the company’s presence continues to anchor the regional economy despite the 2017 HQ relocation to Deerfield. Caterpillar’s massive manufacturing, testing, and R&D facilities along Route 24 and Adams Street still employ thousands, and hundreds of Tier 1 and Tier 2 suppliers operate throughout the Peoria metro area. OSF HealthCare and UnityPoint Health Methodist serve as the city’s healthcare anchors, supporting a network of medical practices, specialty clinics, and health technology companies in the growing medical district. The Illinois River corridor south of Peoria supports agricultural operations including grain processing, livestock, and farm equipment dealerships. SDO CPA works with Peoria manufacturers, healthcare providers, and agricultural businesses to handle complex cost accounting, maximize Section 179 and bonus depreciation on equipment purchases, and structure entities for multi-state sales tax compliance. We analyze your production costs and overhead allocations monthly, helping Caterpillar suppliers and independent manufacturers maintain clean financials while optimizing their Illinois PTE election and federal tax positions.

Illinois Tax Planning Tip

Illinois has a flat 4.95% income tax that applies to all pass-through entity income. S-Corp owners should evaluate Illinois’s pass-through entity tax (PTE) election to work around the federal SALT deduction cap — this can save $5,000-$20,000 for owners with $200K+ in Illinois-source income. Chicago businesses also face the city’s 0.4% personal property lease transaction tax on equipment rentals.

Peoria is home to 5,000+ small businesses and a population of 112,126. From Heavy Equipment Manufacturing, Healthcare, Agriculture to professional services, Peoria business owners need CPAs who understand Complex manufacturing cost accounting and equipment depreciation for heavy machinery suppliers and ag-related businesses and can provide year-round tax planning — not just compliance.

CPA Services for Peoria Businesses

Common Challenges for Peoria Business Owners

Challenge

Peoria businesses often face Complex manufacturing cost accounting and equipment depreciation for heavy machinery suppliers and ag-related businesses, making tax planning and cash flow management more complex than standard approaches allow.

Our Approach

We provide proactive tax planning and fractional CFO services tailored to Peoria’s business environment, helping you handle Complex manufacturing cost accounting and equipment depreciation for heavy machinery suppliers and ag-related businesses with confidence.

Challenge

Many Peoria business owners struggle to get timely responses from their CPA, especially during busy seasons when questions are most urgent.

Our Approach

SDO CPA provides direct access to your CPA team with same-day response times. No call centers, no waiting weeks for answers.

Challenge

Tax preparation alone doesn’t help Peoria business owners understand their financial position or make informed decisions throughout the year.

Our Approach

We deliver monthly financial reports with actionable insights, helping you understand cash flow, profitability, and tax liability before year-end.

“SDO CPA helped our Caterpillar supply company navigate $82,000 in equipment depreciation across three facilities. Their manufacturing accounting expertise and monthly reporting keep our cash flow predictable through production cycles.”
— Michael D., Heavy equipment parts manufacturer in Peoria

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

Book a call to discuss your Peoria business, current financial setup, and goals.

2

Get Your Custom Proposal

Receive a clear proposal with upfront estimates — if scope changes, we discuss it first.

3

Seamless Onboarding

We connect to your QuickBooks or Xero and organize your books within 30 days.

4

Ongoing Partnership

Monthly reports, proactive tax planning, and year-round CPA access.

Why Peoria Business Owners Choose SDO CPA

Illinois Tax Expertise

We understand Illinois has a flat 4.95% income tax plus Chicago city-level taxes and help Peoria businesses maximize tax advantages while managing federal obligations and multi-state complexity.

Transparent Pricing

Clear monthly estimates for standard services. We scope your needs upfront and communicate before any additional work. See our pricing.

Cloud-Based & Virtual

Access your financials anywhere. We work with QuickBooks Online, Xero, Gusto, and Ramp to keep your Peoria business running smoothly.

S-Corp & Partnership Specialists

Our clients are pass-through entity owners. We handle reasonable compensation analysis, K-1 preparation, QBI optimization, and entity selection.

Responsive Communication

Get answers when you need them. Our team responds within one business day, and you’ll have direct access to your CPA.

Frequently Asked Questions

How much does a CPA cost for a small business in Peoria?
At SDO CPA, bookkeeping starts at $300-$500 per month for a single entity. Full-service packages including bookkeeping, tax planning, and advisory range from $1,000-$2,000 per month with upfront estimates — if scope changes, we discuss it first. View our pricing.
Can a virtual CPA serve my Peoria business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves Peoria businesses through secure cloud-based tools including QuickBooks Online, Gusto, and encrypted document sharing with the same quality as a local firm.
Do you specialize in Heavy Equipment Manufacturing businesses?
Yes. Peoria’s Heavy Equipment Manufacturing sector has unique accounting needs including industry-specific deductions, revenue recognition, and compliance requirements that we address with tailored solutions.
What is the difference between a bookkeeper and a CPA?
A bookkeeper records transactions and maintains financial records. A CPA is a state-licensed professional who can prepare and sign tax returns, provide tax planning advice, represent you before the IRS, and offer strategic financial guidance that bookkeepers cannot.
Do you offer fractional CFO services for Peoria businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for Peoria businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my Peoria business be an S-Corp or LLC?
It depends on your net income. Generally, businesses earning over $60,000 in net profit may save on self-employment taxes by electing S-Corp status. Use our S-Corp tax calculator to estimate savings, then schedule a consultation for personalized analysis.
How quickly does SDO CPA respond to questions?
We respond to all client inquiries within one business day. For urgent tax matters, we prioritize same-day responses. You’ll have direct access to your CPA — no call centers or gatekeepers.
What accounting software do you work with?
We work with QuickBooks Online, Xero, Gusto for payroll, and Ramp for expense management. We’ll recommend the best setup for your Peoria business during your free consultation. Learn about our bookkeeping services.

Resources for Peoria Business Owners

Also Serving Central Illinois

SDO CPA provides virtual CPA services to businesses throughout Central Illinois and Illinois.

Ready to Work With a CPA Who Understands Peoria Businesses?

Schedule your free consultation today. We’ll analyze your tax situation and provide an upfront estimate with no obligation.

Schedule a Call
Licensing & Service Disclaimer: SDO CPA LLC is a Texas-licensed CPA firm serving clients in Illinois under CPA practice mobility provisions. We do not maintain a physical office in Illinois — all services are delivered remotely via secure video, phone, and digital collaboration tools. SDO CPA does not hold a CPA license in Illinois. Services requiring CPA licensure are performed by Texas-licensed CPAs. We do not provide attest services (audits, reviews, or compilations). Per Texas State Board of Public Accountancy regulations (22 TAC §501.82).