Denver CPA Firm for S-Corps & Small Businesses

Looking for a CPA in Denver? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to Denver 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 Denver 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 Denver’s Technology, Finance, Healthcare economy. Whether you’re managing Managing tax implications of rapid business growth in Denver’s competitive startup ecosystem, particularly for companies scaling from seed to Series A with multi-state employee bases or capitalizing on Leveraging Denver’s tech talent influx and venture capital access to build high-growth companies with strategic tax planning for equity compensation and multi-state nexus issues, SDO CPA provides the virtual accounting support your business needs.

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

Key Takeaways: Denver CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • Colorado tax expertise — Colorado has a 4.4% flat income tax with 2.9% state sales tax and 4.4% corporate rate planning and multi-state compliance
  • Industry focus — Specialized experience with Technology, Finance, Healthcare
  • 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 Denver, CO

Denver’s technology sector has exploded with venture capital investment reaching $5.2 billion in 2024, creating a thriving ecosystem of startups in RiNo, LoDo, and the Denver Tech Center. The city’s business owners navigate Colorado’s 4.4% flat income tax alongside Denver’s 4.81% sales tax rate—one of Colorado’s many home-rule jurisdictions requiring separate filing. Denver-based SaaS companies face complex nexus questions as remote employees work from California, Texas, and New York, triggering multi-state tax obligations. Cannabis businesses in Denver’s licensed dispensaries and cultivation facilities deal with IRC 280E limitations preventing normal business deductions. SDO CPA serves Denver entrepreneurs with expertise in startup equity compensation planning, multi-state nexus analysis for remote-first companies, R&D credit documentation for fintech and healthtech ventures, and partnership tax planning for Denver’s booming real estate development market. Our clients in Cherry Creek, Capitol Hill, and Stapleton receive proactive tax strategies designed for Colorado’s unique flat-tax environment and Denver’s dynamic business landscape.

Colorado Tax Planning Tip

Colorado’s flat 4.4% income tax rate applies to both individuals and corporations equally. For S-Corp owners, pass-through income is taxed at this flat rate with no brackets to worry about. However, Colorado’s patchwork of local sales tax jurisdictions — over 70 home-rule cities with their own rates — makes sales tax compliance complex. Use Colorado’s Sales & Use Tax System (SUTS) to simplify multi-jurisdiction filing.

Denver is home to 85,000+ small businesses and a population of 713,252. From Technology, Finance, Healthcare to professional services, Denver business owners need CPAs who understand Managing tax implications of rapid business growth in Denver’s competitive startup ecosystem, particularly for companies scaling from seed to Series A with multi-state employee bases and can provide year-round tax planning — not just compliance.

CPA Services for Denver Businesses

Common Challenges for Denver Business Owners

Challenge

Denver businesses often face Managing tax implications of rapid business growth in Denver’s competitive startup ecosystem, particularly for companies scaling from seed to Series A with multi-state employee bases, 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 Denver’s business environment, helping you handle Managing tax implications of rapid business growth in Denver’s competitive startup ecosystem, particularly for companies scaling from seed to Series A with multi-state employee bases with confidence.

Challenge

Many Denver 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 Denver 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 equity compensation plan to minimize tax impact for our 15-person remote team across 8 states. They saved us from costly nexus mistakes as we scaled.”
— Jessica L., Fintech startup CEO in RiNo in Denver

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

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

Colorado Tax Expertise

We understand Colorado has a 4.4% flat income tax with 2.9% state sales tax and 4.4% corporate rate and help Denver 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 Denver 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 Denver?
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 Denver business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves Denver 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 Technology businesses?
Yes. Denver’s Technology 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 Denver businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for Denver businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my Denver 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 Denver business during your free consultation. Learn about our bookkeeping services.

Resources for Denver Business Owners

Also Serving Denver Metropolitan Area

SDO CPA provides virtual CPA services to businesses throughout Denver Metropolitan Area and Colorado.

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