Finding the right accounting firm in Phoenix can mean the difference between tax season anxiety and year-round financial confidence. Whether you’re running a fast-growing e-commerce brand, scaling a SaaS company, or managing multi-state sales tax obligations, the Phoenix metro area offers a diverse mix of specialized CPAs and full-service firms ready to support your growth.
Arizona’s unique Transaction Privilege Tax (TPT) system—which functions differently than traditional sales tax in most states—adds complexity for businesses operating in Phoenix. Combined with multi-state nexus concerns for online sellers, choosing an accountant who understands both local regulations and broader compliance challenges becomes critical for startups to $300M+ companies alike.
Key takeaways
- Phoenix offers accounting firms for businesses ranging from startups to large companies.
- Arizona’s TPT system adds complexity for businesses operating in Phoenix.
- Many firms specialize by industry, including e-commerce, SaaS, healthcare, construction, and real estate.
- E-commerce and SaaS businesses often need support with multi-state tax compliance.
- Some firms focus on full-service accounting, while others offer niche or project-based support.
- The right firm depends on your business model, growth stage, and compliance needs.
1. Wallace Plese + Dreher
Wallace Plese + Dreher has earned the #1 Accounting Firm ranking from Ranking Arizona for eight consecutive years (2018-2025), a notable record of recognition in Arizona. With over 30 years serving Arizona businesses, WP+D combines regional expertise with national-caliber service delivery.
Core specialties:
- Tax, audit, review services, and consulting
- Construction, manufacturing, and distribution industries
- Healthcare and medical practice accounting
- Real estate development and technology sector
- Business advisory and strategic planning
Office locations:
- Scottsdale: 8665 E. Hartford Drive, Suite 115, Scottsdale, AZ 85255
- Chandler: 500 N. Juniper Drive, Suite 275, Chandler, AZ 85226
- Phone: (480) 345-0500
What makes them different:
WP+D’s recognition extends beyond Arizona—they’ve also earned Accounting Today’s 2024-2023 Regional Leader designation for the Southwest Region and Arizona Top Workplaces honors (2021-2023). This combination of industry recognition and employee satisfaction signals a firm that retains experienced professionals rather than cycling through junior staff.
Best for:
Mid-sized Phoenix businesses ($5M-$100M revenue) in construction, healthcare, or real estate seeking a full-service firm with deep Arizona roots and proven industry specialization.
2. Eide Bailly LLP
Eide Bailly brings national firm resources to the Phoenix market, offering comprehensive depth while maintaining regional accessibility. Their Phoenix office at 2355 E. Camelback Rd., Suite 900, serves as the firm’s Arizona hub for audit, tax, and advisory services across multiple industries.
Service capabilities:
- Audit and assurance services
- Tax preparation and multi-state planning
- Business advisory and consulting
- Technology solutions and implementation
- Industry-specific compliance programs
Contact information:
- Address: 2355 E. Camelback Rd., Suite 900, Phoenix, AZ 85016-9065
- Phone: (480) 315-1040
- Secondary: (602) 264-8630
Why consider a national firm:
Growing businesses often outgrow their local CPA’s capabilities—particularly when expanding into new states, pursuing acquisition opportunities, or preparing for due diligence. Eide Bailly offers continuity: you can start with basic tax services and scale into audit, M&A advisory, or international expansion support without changing firms.
Multi-state complexity:
For businesses selling across state lines, Eide Bailly’s national footprint means access to professionals who understand tax rules in states beyond Arizona. However, for sales tax filing specifically, many mid-market companies find that partnering with a specialized compliance provider for registration, calculation, and remittance—while keeping their CPA for strategic planning—delivers better results than relying on a single firm for everything.
Best for:
Growth-stage businesses ($10M-$100M+ revenue) that need audit-ready financials, M&A support, or multi-state tax planning.
3. Haynie & Company
Haynie & Company brings six decades of experience to Phoenix businesses, earning recognition as an Inside Public Accounting Top 100 Firm. With 14 locations across the US and roots dating to 1960, Haynie combines the personal attention of a regional firm with the resources of a national practice.
Industry specializations:
- Restaurant and hospitality accounting
- Medical and dental practice management
- Nonprofit organization compliance
- QuickBooks setup and optimization
- Financial statement preparation
Best for:
Restaurants, medical practices, and nonprofits in Phoenix seeking an established firm with industry-specific expertise. Also strong for businesses wanting to outsource their entire accounting function through Client Advisory Services.
4. UpCounting Phoenix
UpCounting specializes in Arizona TPT—the state’s unique approach to taxing business activity that differs significantly from traditional sales tax systems. For e-commerce businesses operating out of Phoenix, understanding TPT compliance is essential to avoiding costly audit surprises.
Core competencies:
- Arizona TPT expertise and compliance
- E-commerce accounting and bookkeeping
- Tax planning for online businesses
- Multi-state sales tax coordination
- Cross-border commerce support
Phoenix-specific value:
Phoenix’s position as a Southwest logistics hub creates unique opportunities—and complexities—for e-commerce businesses. Proximity to Mexico means cross-border commerce considerations that coastal firms may not understand. UpCounting emphasizes Phoenix’s unique position in their service approach, helping businesses take advantage of Arizona’s logistics infrastructure while maintaining compliance.
Best for:
E-commerce businesses headquartered in Phoenix that need local TPT expertise combined with multi-state sales tax understanding. Particularly valuable for brands using Arizona-based 3PLs or fulfillment centers that create physical nexus in the state.
7. Lowy Your Taxes
Lowy Your Taxes has carved out a niche serving Phoenix’s growing technology sector, including startups, SaaS companies, and digital service businesses. Located at 780 E Thunderbird Rd, Phoenix, the firm understands the unique accounting challenges facing tech companies—from stock option taxation to revenue recognition for subscription models.
Technology industry services:
- Accounting for tech startups and growth companies
- Tax planning specific to software and SaaS
- Daily accounting management
- Detailed financial reporting
- Cost management strategies
Why tech companies need specialized accountants:
SaaS taxability varies wildly by state—some tax it as tangible personal property, others as a service, and some exempt it entirely. Remote employee arrangements can trigger nexus in states where your company has no customers. Usage-based billing models create revenue recognition complexity that general CPAs often miscategorize.
A CPA who understands these nuances can prevent costly errors before they compound. For the actual execution of multi-state sales tax compliance, many tech companies find that combining a tech-savvy CPA for strategy with a managed service like Zamp for registration and filing—with real-time rooftop-accurate rates across 13,000+ jurisdictions—delivers the best outcome.
Contact information:
- Address: 780 E Thunderbird Rd, Phoenix, AZ 85022
- Phone: (602) 943-4494
Best for:
Technology startups and SaaS companies in Phoenix seeking a CPA who understands software business models, stock compensation, and the tax implications of distributed teams.
8. SDO CPA
SDO CPA stands out in a notoriously opaque industry by publishing clear pricing on their website—a rarity among CPA firms. With 18+ years of experience and a fully virtual service model, SDO offers Phoenix businesses consistent, predictable accounting costs without geographic limitations.
Arizona tax expertise:
SDO CPA specifically addresses Arizona’s tax landscape, including:
- Flat 2.5% state income tax rate planning
- 5.6% TPT compliance strategies
- Multi-state nexus coordination
- S-Corp and entity optimization
Best for:
S-Corps and small businesses ($500K-$5M revenue) seeking predictable accounting costs and virtual-first service delivery. Strong fit for technology, healthcare, and financial services companies that prefer cloud-based operations.
9. Price Kong CPAs
Price Kong has built a reputation for practical, thorough accounting work with specific experience handling Arizona Department of Revenue sales tax audits.
Service offerings:
- Business CPA services
- Tax planning and preparation
- Sales tax audit assistance
- Advisory services
- Dental practice specialization
Why audit experience matters:
Sales tax audits don’t happen in a vacuum—they typically follow patterns of non-compliance that built up over years. Having a CPA who has navigated DOR audits before means they understand what triggers scrutiny, how to prepare documentation, and how to negotiate reasonable outcomes when errors are discovered.
For businesses concerned about existing exposure, addressing historical compliance gaps proactively through voluntary disclosure agreements often results in better outcomes than waiting for state auditors to come knocking.
Best for:
Phoenix businesses facing sales tax audit concerns or seeking a thorough, detail-oriented CPA for ongoing compliance. Particularly strong for dental practices.
10. Lohman Company
Lohman Company earned the #1 ranking in Ranking Arizona’s 5-29 CPA category for 2025, distinguishing itself through a unique “Project Professionals” service line and RISE core values (Relationships, Integrity, Service, Expertise). Headquartered in Mesa since 2000, the firm serves clients ranging from startups to Fortune 500 companies.
Core services:
- Tax planning and compliance
- Assurance services
- Client accounting services (CAS)
- Business advisory
- Project Professionals – tactical finance project support
What sets them apart:
The Project Professionals offering fills a gap most firms ignore: discrete finance projects that don’t require ongoing engagement. Need to clean up your books before a fundraise? Implement a new ERP? Conduct a sales tax exposure assessment? Lohman can deploy specialized resources for specific projects without locking you into long-term contracts.
Best for:
Growing businesses that need flexible access to specialized finance talent—whether for ongoing accounting, specific projects, or advisory engagements. Strong fit for companies navigating major transitions (fundraising, acquisitions, ERP implementations) that need temporary depth without permanent headcount.
Frequently asked questions
What specific sales tax challenges do e-commerce businesses in Phoenix face?
Arizona’s Transaction Privilege Tax (TPT) operates differently than traditional sales tax—it’s technically a tax on the privilege of doing business in Arizona rather than a tax on the consumer. E-commerce businesses must navigate TPT for in-state sales while also managing economic nexus triggers in other states created by marketplace sales, FBA inventory placement, or 3PL arrangements. Phoenix’s role as a Southwest logistics hub means many online sellers use Arizona-based fulfillment, which can create physical nexus even for companies headquartered elsewhere.
How can a Phoenix accounting firm help my SaaS company with multi-state sales tax compliance?
A tech-savvy Phoenix CPA can advise on entity structure, revenue recognition, and state-by-state taxability determinations for your software products. However, the actual execution of multi-state registration, calculation, filing, and remittance often benefits from specialized compliance automation. Many SaaS companies work with both: a CPA for strategic planning and a managed compliance partner for the operational burden of staying current across all jurisdictions where they have obligations.
What should I look for in an accounting firm to ensure they can handle complex sales tax issues?
Ask specifically about their experience with Arizona TPT audits, their understanding of economic nexus thresholds, and whether they have clients in your industry. Red flags include firms that treat sales tax as an afterthought, lack experience with multi-state filings, or don’t have clear processes for managing exemption certificates. For businesses with significant sales tax complexity, consider whether the firm partners with specialized compliance providers or tries to handle everything in-house.
Can Zamp directly assist my Phoenix business with sales tax, or do I need an accounting firm?
Zamp works both directly with businesses and alongside their existing accounting partners. For startups to $300M+ companies needing managed sales tax compliance—including registration, real-time rooftop-accurate calculations across 13,000+ jurisdictions and 70+ countries, automated filing, and notice management—Zamp can serve as your complete compliance solution. For businesses preferring to keep strategic tax planning with their CPA while outsourcing sales tax execution, Zamp integrates seamlessly through its “do it for you or with you” model. Some accounting firms also leverage Zamp’s white-label Z Tax program to offer sales tax compliance under their own brand.
How does Zamp ensure sales tax accuracy for businesses operating in Phoenix and other states?
Zamp owns and verifies all of its tax data rather than purchasing third-party rate feeds—which means when your CFO asks “why was this taxed this way,” Zamp can provide a clear answer. The platform uses real-time rooftop-accurate rates (based on geospatial coordinates, not ZIP codes) across 13,000+ US jurisdictions, with automated registration management, filing, and proactive notice resolution. Unlike DIY software that puts all liability on the business, Zamp takes on (or shares) liability for compliance accuracy, covering penalties and interest for errors under the Zamp Commitment.
