Keystone CPA, Inc.
CPA Firm in Fullerton, CA · Open Monday–Friday · ✓ Listing checked September 2026 · Viewed 1,406 times
Contact Information
| Address | 1400 N Harbor Blvd Ste 650 Fullerton, CA 92835 Map and directions |
|---|---|
| Phone | (714) 485-3380 |
| Website | keystonecpa.com |
| Company page | |
| Category | CPA Firm · Accountant, Certified public accountant |
| Services | accounting & tax |
About Keystone CPA, Inc.
Keystone CPA, Inc. is a cpa firm in Fullerton, California offering accounting & tax. It holds a 4.6★ Google rating across 79 reviews. 91% of those reviews are 4- or 5-star. Its Google Business Profile is verified. The firm appears in the IRS return-preparer (PTIN) directory. Its 4.6★ rating is in line with the Fullerton average of 4.6★ across 67 rated firms.
Hours
| Monday | 9AM-5PM |
| Tuesday | 9AM-5PM |
| Wednesday | 9AM-5PM |
| Thursday | 9AM-5PM |
| Friday | 9AM-5PM |
| Saturday | Closed |
| Sunday | Closed |
Google rating breakdown4.6 · 79 reviews
5★72
4★0
3★0
2★0
1★7
Aggregate review counts from Google.
Details
- Wheelchair accessible entrance
- Wheelchair accessible parking
- Wheelchair accessible restroom
- Recommends appointment
Questions about Keystone CPA, Inc.
- Where is Keystone CPA, Inc. located?
- Keystone CPA, Inc. is located at 1400 N Harbor Blvd Ste 650, Fullerton, CA 92835.
- What are Keystone CPA, Inc.'s hours?
- Open Monday–Friday. Full hours are listed on this page and on the firm's Google Business Profile.
- How do I contact Keystone CPA, Inc.?
- You can reach Keystone CPA, Inc. by phone at (714) 485-3380, and through its website.
- What services does Keystone CPA, Inc. offer?
- Keystone CPA, Inc. is categorized as a cpa firm, offering accounting & tax. Contact the firm to confirm current service offerings.
- Is Keystone CPA, Inc. registered with the IRS?
- Keystone CPA, Inc. appears in the IRS return-preparer (PTIN) directory, which lists preparers holding an active Preparer Tax Identification Number. You can verify credentials in the IRS directory at irs.treasury.gov/rpo.
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Update this listingListing compiled from public sources and last refreshed in September 2026. Ratings are aggregate Google ratings, attributed to Google. Confirm hours and licenses with the firm before you visit or hire. Request removal or correction.