Madison CPA Firm for S-Corps & Small Businesses

Looking for a CPA in Madison? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to Madison 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 Madison 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 Madison’s Aerospace/Defense, Technology, Engineering economy. Whether you’re managing Federal contractor compliance accounting and classified project cost segregation for defense businesses or capitalizing on Proximity to Redstone Arsenal and NASA Marshall driving high-value engineering and tech subcontracting, SDO CPA provides the virtual accounting support your business needs.

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

Key Takeaways: Madison CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • Alabama tax expertise — Alabama has a graduated income tax (2%-5%) plus a business privilege tax planning and multi-state compliance
  • Industry focus — Specialized experience with Aerospace/Defense, Technology, Engineering
  • 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 Madison, AL

Madison is one of Alabama’s fastest-growing cities, positioned directly west of Huntsville and deeply integrated into the Redstone Arsenal and NASA Marshall Space Flight Center aerospace ecosystem. The Town Madison development along I-565 has attracted hundreds of new businesses, while the established Madison Boulevard corridor houses engineering consultancies, defense subcontractors, and technology firms that serve Redstone Arsenal’s $20+ billion economic footprint. Major employers like Boeing, Raytheon, and Dynetics maintain facilities nearby, and hundreds of small engineering firms and cleared defense contractors operate from Madison’s business parks. The city’s Bradford Creek and Clift Farm commercial areas host growing medical practices, financial advisory firms, and professional services serving the metro’s highest-income demographic. SDO CPA works with Madison business owners across aerospace, defense contracting, and technology to structure entities for federal contract compliance, manage R&D tax credits on engineering projects, and optimize S-Corp reasonable compensation for high-earning defense consultants. For engineering firms and cleared contractors along the Research Park corridor, we provide monthly bookkeeping and fractional CFO services that meet federal accounting standards.

Alabama Tax Planning Tip

Alabama’s graduated income tax tops out at 5% on income over $3,000 (single) / $6,000 (married). S-Corp owners should evaluate the pass-through entity tax election (PTET) to work around the federal SALT deduction cap. Alabama also offers a unique federal income tax deduction on state returns — one of only three states allowing this.

Madison is home to 2,600+ small businesses and a population of 58,335. From Aerospace/Defense, Technology, Engineering to professional services, Madison business owners need CPAs who understand Federal contractor compliance accounting and classified project cost segregation for defense businesses and can provide year-round tax planning — not just compliance.

CPA Services for Madison Businesses

Common Challenges for Madison Business Owners

Challenge

Madison businesses often face Federal contractor compliance accounting and classified project cost segregation for defense 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 Madison’s business environment, helping you handle Federal contractor compliance accounting and classified project cost segregation for defense businesses with confidence.

Challenge

Many Madison 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 Madison 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 structured our Madison engineering consultancy to optimize federal contract accounting and saved us $52,000 through R&D credits and proper S-Corp compensation. They understand defense contractor needs.”
— Karen L., Aerospace engineering firm owner in Madison

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

Book a call to discuss your Madison 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 Madison Business Owners Choose SDO CPA

Alabama Tax Expertise

We understand Alabama has a graduated income tax (2%-5%) plus a business privilege tax and help Madison 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 Madison 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 Madison?
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 Madison business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves Madison 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 Aerospace/Defense businesses?
Yes. Madison’s Aerospace/Defense 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 Madison businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for Madison businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my Madison 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 Madison business during your free consultation. Learn about our bookkeeping services.

Resources for Madison Business Owners

Also Serving Huntsville Metro/North Alabama

SDO CPA provides virtual CPA services to businesses throughout Huntsville Metro/North Alabama and Alabama.

Ready to Work With a CPA Who Understands Madison 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 Alabama under CPA practice mobility provisions. We do not maintain a physical office in Alabama — all services are delivered remotely via secure video, phone, and digital collaboration tools. SDO CPA does not hold a CPA license in Alabama. 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).