Williston CPA Firm for S-Corps & Small Businesses

Looking for a CPA in Williston? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to Williston 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 Williston 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 Williston’s Oil & Gas, Construction, Transportation economy. Whether you’re managing Williston’s Bakken oil boom created rapid wealth and equally rapid tax complexity around mineral rights income, royalty payments, and production tax deductions or capitalizing on The Bakken formation’s continued development generates IDC deductions, percentage depletion, and equipment depreciation opportunities that can shelter substantial federal income, SDO CPA provides the virtual accounting support your business needs.

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

Key Takeaways: Williston CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • North Dakota tax expertise — North Dakota has a 1.95% flat income tax (eff. 2024). Oil extraction tax 5% + gross production tax 5% for energy companies. planning and multi-state compliance
  • Industry focus — Specialized experience with Oil & Gas, Construction, Transportation
  • 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 Williston, ND

Williston sits at the epicenter of the Bakken oil boom, where over 1,400 businesses have grown to serve North Dakota’s most productive oil field. The city’s population nearly tripled during the peak production years, and while growth has stabilized, oil and gas remain the dominant economic force. Operators, drilling companies, and service firms along the Highway 2 and Highway 85 corridors deal with intangible drilling cost deductions, percentage depletion on production, and North Dakota’s combined 10% production taxes that must be coordinated with federal returns. Mineral rights owners throughout Williams County receive royalty payments that create passive income classification questions and depletion calculations. Williston’s construction sector, built to house the oil boom workforce, manages multi-unit residential and commercial projects with complex depreciation schedules. The ARC (Williston Area Recreation Center) and downtown Raymond Family Community Center reflect community investment funded by oil tax revenue. SDO CPA helps Williston’s energy companies maximize IDC deductions, properly deduct production taxes on federal returns, and plan for the commodity price volatility that has defined this boomtown’s economy since 2008.

North Dakota Tax Planning Tip

North Dakota’s flat 1.95% income tax rate is one of the lowest in the nation, making state-level planning straightforward. The real complexity hits energy companies: the oil extraction tax (5%) plus gross production tax (5%) combine for a 10% total production tax on oil. These production taxes are deductible on federal returns, so coordinate your federal and state planning to capture the full deduction benefit. Non-energy businesses should focus on federal optimization since the state rate is so low.

Williston is home to 1,400+ small businesses and a population of 26,632. From Oil & Gas, Construction, Transportation to professional services, Williston business owners need CPAs who understand Williston’s Bakken oil boom created rapid wealth and equally rapid tax complexity around mineral rights income, royalty payments, and production tax deductions and can provide year-round tax planning — not just compliance.

CPA Services for Williston Businesses

Common Challenges for Williston Business Owners

Challenge

Williston businesses often face Williston’s Bakken oil boom created rapid wealth and equally rapid tax complexity around mineral rights income, royalty payments, and production tax deductions, 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 Williston’s business environment, helping you handle Williston’s Bakken oil boom created rapid wealth and equally rapid tax complexity around mineral rights income, royalty payments, and production tax deductions with confidence.

Challenge

Many Williston 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 Williston 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 own mineral rights on 640 acres in the Bakken and our royalty income jumped from $12,000 to $187,000 in two years. SDO CPA set up proper depletion calculations and estimated payments that saved us $16,300 in the first year.”
— Mark V., Mineral rights owner in Williston

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

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

North Dakota Tax Expertise

We understand North Dakota has a 1.95% flat income tax (eff. 2024). Oil extraction tax 5% + gross production tax 5% for energy companies. and help Williston 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 Williston 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 Williston?
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 Williston business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves Williston 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 Oil & Gas businesses?
Yes. Williston’s Oil & Gas 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 Williston businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for Williston businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my Williston 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 Williston business during your free consultation. Learn about our bookkeeping services.

Resources for Williston Business Owners

Also Serving Northwest North Dakota

SDO CPA provides virtual CPA services to businesses throughout Northwest North Dakota and North Dakota.

Ready to Work With a CPA Who Understands Williston 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 providing tax preparation, bookkeeping, and advisory services to clients nationwide under CPA practice mobility provisions. SDO CPA does not hold a CPA license in North Dakota. Services requiring CPA licensure are performed by Texas-licensed CPAs. We do not provide attest services (audits, reviews, or compilations) for North Dakota entities. Per Texas State Board of Public Accountancy regulations (22 TAC §501.82).