Renton CPA Firm for S-Corps & Small Businesses

Looking for a CPA in Renton? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to Renton 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 Renton 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 Renton’s Aerospace (Boeing Renton), Technology, Healthcare economy. Whether you’re managing Dual aerospace and tech workforce creating complex equity compensation and retirement plan administration or capitalizing on Boeing 737 MAX production ramp-up and IKEA distribution presence driving subcontractor and supplier growth, SDO CPA provides the virtual accounting support your business needs.

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

Key Takeaways: Renton CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • Washington tax expertise — Washington has no state income tax, but B&O tax on gross receipts applies to most businesses planning and multi-state compliance
  • Industry focus — Specialized experience with Aerospace (Boeing Renton), Technology, 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 Renton, WA

Renton is home to Boeing’s 737 assembly line, the company’s highest-volume commercial aircraft production facility, employing thousands of workers at the plant along the south shore of Lake Washington. The city has also attracted major technology companies, with multiple tech firms establishing offices in The Landing and along Rainier Avenue, drawn by proximity to both Seattle and the Eastside tech corridor. Providence Health’s Valley Medical Center and UW Medicine clinics serve the south King County population, supporting a network of specialty practices and medical billing operations. Renton’s diverse economy spans aerospace manufacturing, software development, healthcare services, and a growing retail sector anchored by The Landing shopping center and Renton Center. The Renton Highlands and Benson Hill neighborhoods have seen significant residential development, with many new residents commuting to tech jobs in Seattle and Bellevue while operating side businesses locally. SDO CPA serves Renton business owners across aerospace, technology, and healthcare with virtual tax preparation, monthly bookkeeping, and S-Corp structuring. We help aerospace subcontractors manage contract-based revenue recognition and B&O manufacturing classification, assist tech company founders with stock option exercises and R&D credit documentation, and provide fractional CFO services for healthcare practices managing provider compensation and insurance reimbursement complexity.

Washington Tax Planning Tip

Washington has no state income tax, but the B&O (Business & Occupation) tax applies to gross receipts at rates varying by classification: 1.5% for service businesses, 0.471% for manufacturing, and 0.484% for retailing. Many Seattle businesses overpay because they file under the wrong classification or miss available credits. Proper classification review can reduce your B&O liability significantly.

Renton is home to 5,000+ small businesses and a population of 105,279. From Aerospace (Boeing Renton), Technology, Healthcare to professional services, Renton business owners need CPAs who understand Dual aerospace and tech workforce creating complex equity compensation and retirement plan administration and can provide year-round tax planning — not just compliance.

CPA Services for Renton Businesses

Common Challenges for Renton Business Owners

Challenge

Renton businesses often face Dual aerospace and tech workforce creating complex equity compensation and retirement plan administration, 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 Renton’s business environment, helping you handle Dual aerospace and tech workforce creating complex equity compensation and retirement plan administration with confidence.

Challenge

Many Renton 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 Renton 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.

“Our physical therapy practice in Renton had messy books from mixing insurance reimbursements with cash-pay revenue. SDO CPA cleaned up two years of bookkeeping and restructured us as an S-Corp, saving $58,000 in self-employment taxes the first year.”
— Lisa M., Physical therapy practice owner in Renton

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

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

Washington Tax Expertise

We understand Washington has no state income tax, but B&O tax on gross receipts applies to most businesses and help Renton 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 Renton 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 Renton?
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 Renton business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves Renton 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 (Boeing Renton) businesses?
Yes. Renton’s Aerospace (Boeing Renton) 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 Renton businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for Renton businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my Renton 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 Renton business during your free consultation. Learn about our bookkeeping services.

Resources for Renton Business Owners

Also Serving South King County/Puget Sound

SDO CPA provides virtual CPA services to businesses throughout South King County/Puget Sound and Washington.

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