Choosing the right CPA in San Mateo can make all the difference in navigating California’s complex tax landscape, from state income adjustments to local business deductions. Whether you’re a tech professional, a small business owner, or a retiree, you want a trusted expert who knows the Bay Area’s unique financial nuances. Here are the top-rated CPAs in San Mateo for July 2026, based on real customer feedback.
- Humex Income Tax — 1720 S Amphlett Blvd Ste 140, San Mateo, CA 94402, USA. With a perfect 5.0-star rating from 34 reviews, Humex Income Tax is a standout for clients seeking personalized, thorough tax preparation in the downtown San Mateo area. They’re known for their attentive service and ability to handle complex filings, making them a reliable choice for both individuals and small businesses.
- Alliance Accounting, PC — 235 3rd Ave STE 202, San Mateo, CA 94401, USA. This firm holds a flawless 5.0-star rating from 8 reviews, reflecting their commitment to clear communication and comprehensive accounting services. Located near San Mateo’s central business district, they are especially helpful for local entrepreneurs who need year-round bookkeeping and tax planning.
- DeMartini & Company — 411 Borel Ave Suite 450, San Mateo, CA 94402, USA. Earning a 5.0-star rating from 3 reviews, DeMartini & Company is a boutique firm that prioritizes building long-term relationships with clients in the Hillsdale area. Their small size allows for a tailored approach, ideal for those who value one-on-one attention during tax season.
- Crisafi, Pryor & Farquhar, Inc. — 1300 S El Camino Real Ste#300, San Mateo, CA 94402, USA. With a 5.0-star rating from 3 reviews, this firm brings decades of combined experience to clients along the El Camino Real corridor. They specialize in helping families and small businesses navigate California’s tax codes with confidence and clarity.
- Pabla Tax CPA — 177 Bovet Rd 6th floor, San Mateo, CA 94402, USA. Boasting a 5.0-star rating from 3 reviews, Pabla Tax CPA is a go-to for professionals in the Bay Meadows area who need efficient tax preparation and strategic advice. Their sixth-floor office offers a professional setting for in-depth consultations on everything from investments to estate planning.
- Accounting for TAX — 1900 S Norfolk St #350, San Mateo, CA 94403, USA. This firm maintains a perfect 5.0-star rating from 3 reviews, with clients praising their straightforward approach and fast turnaround times. Located near the San Mateo County Event Center, they are a solid pick for those seeking no-nonsense tax help without hidden fees.
- Matt Grodin CPA — 1720 S Amphlett Blvd STE 104, San Mateo, CA 94402, USA. With a 5.0-star rating from 2 reviews, Matt Grodin CPA offers a friendly, accessible option for residents near the San Mateo Caltrain station. Clients appreciate his ability to demystify tax forms and provide clear answers, making him a great fit for first-time filers or freelancers.
- SD Mayer, a Springline company — 411 Borel Ave Suite 512, San Mateo, CA 94402, USA. This firm holds a 5.0-star rating from 2 reviews and is part of the innovative Springline business community in downtown San Mateo. They combine modern technology with traditional CPA expertise, making them a forward-thinking choice for startups and growing companies.
- Byrne, Seligman & Co, CPA — 1700 S El Camino Real # 506, San Mateo, CA 94402, USA. With a 5.0-star rating from 1 review, this established firm is located along the bustling El Camino Real and is known for its meticulous attention to detail. They are a strong option for clients who value experience and a steady hand when dealing with complex tax situations.
- Caplan & Wong CPAs, LLP — 1670 S Amphlett Blvd # 250, San Mateo, CA 94402, USA. Earning a 5.0-star rating from 1 review, this partnership firm offers bilingual services and a deep understanding of local tax laws near the Hillsdale Shopping Center. They are particularly helpful for families and small business owners who appreciate a collaborative, client-first approach.
When hiring a CPA in San Mateo, consider booking your appointment in early spring—February or March—to avoid the last-minute rush and secure your preferred time. Ask potential CPAs about their experience with California state taxes, especially if you have rental income or stock options, which are common in the Bay Area. A fair price for a straightforward individual return in San Mateo typically ranges from $200 to $400, while more complex filings for businesses or investments may run $500 to $1,500—always request a quote upfront to avoid surprises.