Real Reviews · Ontario
Top-Reviewed CPAs & Accountants in Ontario, CA
What are customers actually saying? Read verified reviews for cpas & accountants in Ontario — every rating is from a real customer.
As of June 2026, RatingsNearMe ranks 20 cpas & accountants in Ontario, CA by verified customer ratings and review volume. The highest-rated is RCS Tax Group with a 4.9-star rating from 198 verified reviews. Also in the top tier: Madero Accountancy Practice, PC and Cifuentes & Associates Ltd. Liability Co.. The average rating across all listed cpas & accountants in Ontario is 4.8 stars from 33 reviews per business on average.
CPA fees in Ontario: $150–$400/hr consultation; $300–$800 personal tax returns; $500–$2,500+ business returns.
Rankings updated June 1, 2026 · Scored by ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
20
Businesses listed
4.8★
Avg rating
33
Avg reviews
Jun 1, 2026
Last updated
Top Rated CPAs & Accountants
RCS Tax Group
3200 E Guasti Rd Ste 100 Unit 7, Ontario, CA 91761, USA
Madero Accountancy Practice, PC
4055 E Hamilton Paseo, Ontario, CA 91761, USA
Cifuentes & Associates Ltd. Liability Co.
3400 Inland Empire Blvd #101, Ontario, CA 91764, USA
CPAs & Accountants Rankings in Ontario, CA
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | RCS Tax Group3200 E Guasti Rd Ste 100 Unit 7, Ontario, CA 91761, USA | 4.9★ | 198 |
| #2 | Madero Accountancy Practice, PC4055 E Hamilton Paseo, Ontario, CA 91761, USA | 5.0★ | 46 |
| #3 | Cifuentes & Associates Ltd. Liability Co.3400 Inland Empire Blvd #101, Ontario, CA 91764, USA | 5.0★ | 40 |
| #4 | Gordon W. McNamee, CPA9445 Buttonwood Ct, Rancho Cucamonga, CA 91730, USA | 4.6★ | 10 |
| #5 | Meza CPAs, Tax & Accounting3350 Shelby St #200, Ontario, CA 91764, USA | 5.0★ | 23 |
| #6 | Chartered Professional Accountants of Ontario (CPA Ontario)69 Bloor St E, Toronto, ON M4W 1B3, Canada | 2.4★ | 122 |
| #7 | Xel Advisors, CPA337 N Vineyard Ave #230, Ontario, CA 91764, USA | 4.8★ | 41 |
| #8 | Hongda Tax and Accounting Services2920 Inland Empire Blvd #105, Ontario, CA 91764, USA | 4.9★ | 30 |
| #9 | Accountant Partners Small Business Accountant - Ontario Location2321 S Greenwood Pl, Ontario, CA 91761, USA | — | — |
| #10 | GYL CPAs and Advisors4120 Concours St # 100, Ontario, CA 91764, USA | 5.0★ | 1 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated June 2026
All CPAs & Accountants in Ontario
Gordon W. McNamee, CPA
9445 Buttonwood Ct, Rancho Cucamonga, CA 91730, USA
Meza CPAs, Tax & Accounting
3350 Shelby St #200, Ontario, CA 91764, USA
Chartered Professional Accountants of Ontario (CPA Ontario)
69 Bloor St E, Toronto, ON M4W 1B3, Canada
Xel Advisors, CPA
337 N Vineyard Ave #230, Ontario, CA 91764, USA
Hongda Tax and Accounting Services
2920 Inland Empire Blvd #105, Ontario, CA 91764, USA
Accountant Partners Small Business Accountant - Ontario Location
2321 S Greenwood Pl, Ontario, CA 91761, USA
GYL CPAs and Advisors
4120 Concours St # 100, Ontario, CA 91764, USA
Kelly Accounting & Associates
1131 W 6th St #210, Ontario, CA 91762, USA
Layman’s Tax & Accounting
404 N 2nd Ave B, Upland, CA 91786, USA
Dewey Mc Donald & Carrillo Inc
1282 W Arrow Hwy #200, Upland, CA 91786, USA
Theresa Hansen CPA
876 N Mountain Ave Suite 103, Upland, CA 91786, USA
ROXY'S TAXES
8430 Baker Ave, Rancho Cucamonga, CA 91730, USA
Pangan Benjamin A CPA
3100 E Cedar St STE 12, Ontario, CA 91761, USA
Robert Bruce CPA
4549 Francis Ave, Chino, CA 91710, USA
Christiansen Accounting | Corina Christiansen, CPA
140 W Foothill Blvd ste e, Claremont, CA 91711, USA
Raul Marquez, CPA Accounting Office
525 W Holt Blvd, Ontario, CA 91762, USA
SB CPA INC
4345 E Lowell St STE G, Ontario, CA 91761, USA
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Frequently Asked Questions — CPAs & Accountants in Ontario
What is the difference between a CPA, bookkeeper, and tax preparer in Ontario?
A CPA (Certified Public Accountant) is licensed by the CA Board of Accountancy, can represent clients before the IRS, and carries liability coverage. A bookkeeper records day-to-day transactions but cannot sign tax returns or provide strategic tax advice. A tax preparer has no required credentials — anyone can prepare taxes. For business owners, complex returns, or IRS issues, a CPA is the right choice.
How do I verify a CPA's license in CA?
Search the CA Board of Accountancy's online license lookup (find it by Googling "CA Board of Accountancy license search"). You can also use NASBA's License Verification tool at nasba.org to search across all states. Always verify before sharing financial documents.
How much does a CPA charge in Ontario?
Typical rates in Ontario: $150–$400/hr for consultation; $300–$800 for a personal tax return; $500–$2,500+ for a small business return depending on complexity. Many CPAs offer flat-fee packages for straightforward situations. Get itemized quotes from at least 2–3 firms before committing.
Should I hire a local CPA or use online tax software?
Online software (TurboTax, H&R Block, FreeTaxUSA) works well for simple W-2 situations with no major life changes. A local CPA in Ontario is worth the cost if you own a business, have rental income, experienced a major event (divorce, inheritance, home sale), owe the IRS money, or want year-round tax planning — not just annual filing.
How are the cpas & accountants on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
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How Rankings Work on This Page
Every cpas & accountants on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: June 1, 2026.
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