1
Paramount Tax & Accounting CPAs Rancho Cucamonga
5.0(416 reviews)
8577 Haven Ave STE 308, Ontario, CA
AccountantUpdated May 2026
Best Accountants in Ontario, CA (2026)
Looking for a accountant in Ontario? We've compiled a list of the top 20 verified accountants in Ontario, CA based on ratings, reviews, and public business records.
38
Total Accountants
20
Top Rated
4.7
Avg Rating
2,455
Total Reviews
Top 20 Accountants in Ontario, CA
2
Madero Accountancy Practice, PC
5.0(46 reviews)
4055 E Hamilton Paseo, Ontario, CA
3
Cifuentes & Associates Ltd. Liability Co.
5.0(40 reviews)
3400 Inland Empire Blvd #101, Ontario, CA
4
Bollman Consulting
5.0(30 reviews)
3281 E Guasti Rd 7th Floor, Ontario, CA
5
Whyte & Associates, Inc.
5.0(28 reviews)
10370 Commerce Center Dr #130, Ontario, CA
6
Meza CPAs, Tax & Accounting
5.0(23 reviews)
3350 Shelby St #200, Ontario, CA
7
Jewels Taxes and Bookkeeping
5.0(12 reviews)
1945 E Riverside Dr #20, Ontario, CA
8
EAGLE TAX & NOTARY PUBLIC SERVICES
5.0(9 reviews)
615 N Euclid Ave Suite 102(909) 467-0702WebsiteDirections "Not only are the services fast and effective but very knowledgeable as well!", Ontario, CA
9
SB CPA INC
5.0(9 reviews)
4345 E Lowell St STE G, Ontario, CA
10
Theresa Hansen CPA
5.0(5 reviews)
876 N Mountain Ave Suite 103, Ontario, CA
11
Kelly Accounting & Associates
5.0(4 reviews)
1131 W 6th St #210, Ontario, CA
12
Regalado Raymond CPA
5.0(3 reviews)
515 N Laurel Ave, Ontario, CA
13
Singh Tax & Accounting
5.0(2 reviews)
3200 E Guasti Rd Ste 100, Ontario, CA
14
GYL CPAs and Advisors
5.0(1 reviews)
4120 Concours St # 100, Ontario, CA
15
Pangan Benjamin A CPA
5.0(1 reviews)
3100 E Cedar St STE 12, Ontario, CA
16
Raul Marquez, CPA Accounting Office
5.0(1 reviews)
525 W Holt Blvd, Ontario, CA
17
RCS Tax Group
4.9(198 reviews)
3200 E Guasti Rd Ste 100 Unit 7, Ontario, CA
18
Fernandez Income Tax
4.9(174 reviews)
115 W B St, Ontario, CA
19
Tax365
4.9(73 reviews)
720 N Archibald Ave c, Ontario, CA
20
Latino's Tax Services
4.9(71 reviews)
1739 S Euclid Ave Suite B, Ontario, CA
How We Chose These Accountants
Our directory aggregates data from multiple public sources to compile the most comprehensive list of accountants in Ontario, CA. Here's how we evaluate and rank professionals:
- Public Licensing Records— We verify that each professional holds valid, up-to-date licenses and registrations in CA.
- NPI Registry & Business Records — For healthcare professionals, we cross-reference the National Provider Identifier registry. For other verticals, we use state business filings and industry databases.
- Customer Ratings & Reviews — We aggregate ratings from major review platforms to surface the highest-quality professionals.
- Completeness of Information— Professionals with verified contact details, addresses, and active online presence rank higher.
Tips for Choosing a Accountant in Ontario
Check Reviews & Ratings
Look for accountants with consistently high ratings and a meaningful number of reviews. A accountant with 4.5 stars and 100+ reviews is generally more reliable than one with 5 stars and only 2 reviews.
Verify Credentials
Always verify that the accountant holds appropriate licenses for CA. Check with your state's licensing board for the most up-to-date information.
Compare Multiple Options
Don't settle for the first option. Contact at least 2-3 accountants to compare services, availability, and pricing before making your decision.
Ask About Experience
Inquire about the accountant's experience with your specific needs. Specialists who focus on particular areas may provide better outcomes than generalists.
Frequently Asked Questions
How many accountants are in Ontario, CA?
Our directory currently lists 38 verified accountants in Ontario, CA. This number is regularly updated as new professionals are added to our database.
What is the average rating for accountants in Ontario?
The average rating for accountants in Ontario, CA is 4.7 out of 5 stars, based on 2,455 total reviews across all listed professionals.
How do I choose the best accountant in Ontario?
Start by reviewing ratings and the number of reviews above. Look for professionals with consistent high marks and verified credentials. We recommend contacting 2-3 options to compare availability, services, and pricing.
Find a Accountant in Ontario Today
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