San Antonio CPA Firm for S-Corps & Small Businesses

Looking for a CPA in San Antonio? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to San Antonio 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 San Antonio 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 San Antonio’s Military, Healthcare, Technology economy. Whether you’re managing military contractor compliance and multi-entity medical practices or capitalizing on San Antonio’s growing tech hub and tourism-driven revenue, SDO CPA provides the virtual accounting support your business needs.

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

Key Takeaways: San Antonio CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • Texas tax expertise — Texas has no state income tax, but franchise tax (margin tax) applies to most businesses planning and multi-state compliance
  • Industry focus — Specialized experience with Military, Healthcare, Technology
  • 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 San Antonio, TX

San Antonio’s economy is anchored by a massive military presence. Joint Base San Antonio, which includes Lackland AFB, Randolph AFB, and Fort Sam Houston, pumps over $49 billion annually into the region and supports thousands of military contractors and defense subcontractors. These businesses face unique compliance requirements including DCAA audit readiness, cost accounting standards, and contract-specific revenue recognition that general CPAs rarely encounter.

The South Texas Medical Center, one of the largest medical complexes in the world, drives a thriving healthcare economy. Physicians and medical practice owners along the Fredericksburg Road corridor manage multi-entity structures separating clinical operations from real estate holdings, requiring careful tax planning around reasonable compensation, retirement plan contributions, and entity selection. San Antonio’s franchise tax obligations add another layer when medical practices exceed the $2.47 million revenue threshold.

SDO CPA works with San Antonio business owners in the Port SA tech hub, the Pearl District’s growing restaurant and hospitality cluster, and the Stone Oak commercial corridor. We provide monthly bookkeeping and fractional CFO services scaled to your growth stage, with specialized experience in military contractor compliance, healthcare entity structuring, and hospitality franchise tax planning.

Texas Tax Planning Tip

Texas doesn’t have a state income tax, but the Texas franchise tax (margin tax) applies to businesses with revenue above $2.47 million. S-Corp and partnership owners should analyze whether the E-Z Computation rate (0.331% of revenue) or the standard rate (0.75% of margin) produces a lower tax bill. Many San Antonio businesses overpay because they default to the E-Z rate without running both calculations.

San Antonio is home to over 65,000 small businesses and a population of 1,472,909. From Military, Healthcare, Technology to professional services, San Antonio business owners need CPAs who understand military contractor compliance and multi-entity medical practices and can provide year-round tax planning — not just compliance.

CPA Services for San Antonio Businesses

Common Challenges for San Antonio Business Owners

Challenge

San Antonio businesses often face military contractor compliance and multi-entity medical practices, 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 San Antonio’s business environment, helping you handle military contractor compliance and multi-entity medical practices with confidence.

Challenge

Many San Antonio 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 San Antonio 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.

“We’re a defense subcontractor near Lackland, and SDO CPA understood our cost accounting requirements from day one. They restructured our entity setup and saved us $18,400 in franchise tax in the first year.”
— Carlos T., Defense contractor in San Antonio

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

Book a call to discuss your San Antonio 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 San Antonio Business Owners Choose SDO CPA

Texas Tax Expertise

We understand Texas has no state income tax, but franchise tax (margin tax) applies to most businesses and help San Antonio 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 San Antonio 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 San Antonio?
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 San Antonio business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves San Antonio 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 Military contractor businesses?
Yes. San Antonio’s Military contractor sector has unique accounting needs including DCAA compliance, contract-specific revenue recognition, and cost accounting standards 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 San Antonio businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for San Antonio businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my San Antonio 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 San Antonio business during your free consultation. Learn about our bookkeeping services.

Resources for San Antonio Business Owners

Also Serving South-Central Texas

SDO CPA provides virtual CPA services to businesses throughout South-Central Texas and Texas.

Ready to Work With a CPA Who Understands San Antonio Businesses?

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

Schedule a Call
Licensing Disclaimer: SDO CPA LLC is a Texas-registered CPA firm. Our team provides tax preparation, bookkeeping, and advisory services to clients nationwide. 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).