New Hampshire CPA Firm for S-Corps & Small Businesses

Looking for a CPA in New Hampshire? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to New Hampshire 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 New Hampshire 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 New Hampshire’s Technology, Healthcare, Manufacturing economy. Whether you’re managing Understanding New Hampshire’s Business Profits Tax (7.5%) and Business Enterprise Tax (0.55%) dual-tax system that applies differently based on entity type and gross receipts or capitalizing on No state income tax on wages makes New Hampshire attractive for S-Corp owners who can optimize the split between salary and distributions, SDO CPA provides the virtual accounting support your business needs.

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

Key Takeaways: New Hampshire CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • New Hampshire tax expertise — New Hampshire has NO state income tax on wages (Interest & Dividends tax repealed 2025). 7.5% Business Profits Tax + 0.55% Business Enterprise Tax. planning and multi-state compliance
  • Industry focus — Specialized experience with Technology, Healthcare, Manufacturing
  • 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 New Hampshire, NH

New Hampshire’s business-friendly tax structure makes it one of the most attractive states in New England for entrepreneurs and business owners, with over 48,000 active businesses across the Granite State. The state charges no income tax on wages since the Interest & Dividends tax was fully repealed in 2025, creating a significant advantage over neighboring Massachusetts (5% flat tax) and Maine (up to 7.15%). However, New Hampshire’s dual business tax system requires careful planning: the 7.5% Business Profits Tax applies to net business income over $75,000, while the 0.55% Business Enterprise Tax hits the enterprise value tax base. For S-Corp and partnership owners, this creates a unique optimization challenge around how much income flows through as salary versus business profits. The Manchester-Nashua corridor drives much of the state’s technology and healthcare economy, while the Seacoast region around Portsmouth attracts professional services and tourism. SDO CPA helps New Hampshire business owners navigate the BPT/BET dual-tax system, structure entity elections to minimize combined federal and state taxes, and plan distributions that take full advantage of the state’s no-income-tax benefit on personal earnings.

New Hampshire Tax Planning Tip

New Hampshire eliminated its Interest & Dividends tax in 2025, meaning there’s now zero state tax on personal wages, interest, and dividends. However, businesses still face the 7.5% Business Profits Tax on net income over $75,000 and the 0.55% Business Enterprise Tax on the enterprise value tax base. For S-Corp owners, optimizing the balance between salary (not state-taxed) and business profits (state-taxed at 7.5%) is critical to minimizing your combined tax burden.

New Hampshire is home to 48,000+ small businesses and a population of 1,402,054. From Technology, Healthcare, Manufacturing to professional services, New Hampshire business owners need CPAs who understand Understanding New Hampshire’s Business Profits Tax (7.5%) and Business Enterprise Tax (0.55%) dual-tax system that applies differently based on entity type and gross receipts and can provide year-round tax planning — not just compliance.

CPA Services for New Hampshire Businesses

Common Challenges for New Hampshire Business Owners

Challenge

New Hampshire businesses often face Understanding New Hampshire’s Business Profits Tax (7.5%) and Business Enterprise Tax (0.55%) dual-tax system that applies differently based on entity type and gross receipts, 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 New Hampshire’s business environment, helping you handle Understanding New Hampshire’s Business Profits Tax (7.5%) and Business Enterprise Tax (0.55%) dual-tax system that applies differently based on entity type and gross receipts with confidence.

Challenge

Many New Hampshire 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 New Hampshire 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 restructured my S-Corp salary to optimize between federal payroll taxes and New Hampshire’s Business Profits Tax. The rebalancing saved me $13,670 in combined taxes the first year.”
— Brian C., Software company owner in New Hampshire

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

Book a call to discuss your New Hampshire 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 New Hampshire Business Owners Choose SDO CPA

New Hampshire Tax Expertise

We understand New Hampshire has NO state income tax on wages (Interest & Dividends tax repealed 2025). 7.5% Business Profits Tax + 0.55% Business Enterprise Tax. and help New Hampshire 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 New Hampshire 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 New Hampshire?
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 New Hampshire business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves New Hampshire 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. New Hampshire’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 New Hampshire businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for New Hampshire businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my New Hampshire 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 New Hampshire business during your free consultation. Learn about our bookkeeping services.

Resources for New Hampshire Business Owners

Also Serving New England

SDO CPA provides virtual CPA services to businesses throughout New England and New Hampshire.

Ready to Work With a CPA Who Understands New Hampshire 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 New Hampshire. Services requiring CPA licensure are performed by Texas-licensed CPAs. We do not provide attest services (audits, reviews, or compilations) for New Hampshire entities. Per Texas State Board of Public Accountancy regulations (22 TAC §501.82).