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Accountants in Thousand Oaks, CA26 Top-Rated Firms (2026)

We list 26 accounting firms in Thousand Oaks, California that have a website and a public review record — 13 CPA firms, 8 financial planners, 3 tax preparers, and 2 bookkeepers. 17 hold a Google rating of 4.5★ or higher, and the average across the 26 rated firms here is 4.22★. They are sorted by Google rating and review count; use the service links above to narrow the list.

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By service in Thousand Oaks

The highest-rated firm in Thousand Oaks is The Law Office of Jeffrey T. Gillingham (5.0★, 51 reviews). 17 of 26 rated firms hold a 4.5★ or higher Google rating.

TL
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering accounting & tax. Rated 5.0★ across 51 Google reviews.
5.0 (51)
AP
Andrew P. Dragotto, CPA✓ VerifiedIRS PTIN
Tax PreparationThousand Oaks, CA
Tax Preparation in Thousand Oaks, California offering tax preparation. Rated 5.0★ across 24 Google reviews.
5.0 (24)
PC
AccountantThousand Oaks, CA
Accountant in Thousand Oaks, California offering accounting. Rated 5.0★ across 20 Google reviews.
5.0 (20)
BM
Tax PreparationThousand Oaks, CA
Tax Preparation in Thousand Oaks, California offering tax preparation. Rated 5.0★ across 15 Google reviews.
5.0 (15)
JJ
Jacobs & Jacobs✓ Verified
Tax PreparationThousand Oaks, CA
Tax Preparation in Thousand Oaks, California offering audit & assurance. Rated 5.0★ across 10 Google reviews.
5.0 (10)
MA
Michael Adams, CPA✓ VerifiedIRS PTIN
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering tax preparation. Rated 5.0★ across 10 Google reviews.
5.0 (10)
PC
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning. Rated 5.0★ across 8 Google reviews.
5.0 (8)
LA
AccountantThousand Oaks, CA
Accountant in Thousand Oaks, California offering accounting. Rated 5.0★ across 5 Google reviews.
5.0 (5)
KJ
AccountantThousand Oaks, CA
Accountant in Thousand Oaks, California offering accounting.
5.0 (2)
GP
Gillingham P.C.✓ VerifiedIRS PTIN
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering accounting & tax.
5.0 (1)
HW
AccountantThousand Oaks, CA
Accountant in Thousand Oaks, California offering accounting.
5.0 (1)
WA
BookkeepingThousand Oaks, CA
Bookkeeping in Thousand Oaks, California offering bookkeeping, and tax preparation.
5.0 (1)
HB
H&R Block✓ Verified
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering tax preparation, tax planning, and advisory. Rated 4.7★ across 127 Google reviews.
4.7 (127)
MD
Michael Drews and Company✓ VerifiedIRS PTIN
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning. Rated 4.6★ across 9 Google reviews.
4.6 (9)
HB
H&R Block✓ Verified
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering tax preparation, tax planning, and advisory. Rated 4.5★ across 96 Google reviews.
4.5 (96)
PT
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering bookkeeping, tax preparation, and advisory. Rated 4.5★ across 26 Google reviews.
4.5 (26)
HT
HLW Tax✓ VerifiedIRS PTIN
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering bookkeeping, tax preparation, and tax planning. Rated 4.5★ across 16 Google reviews.
4.5 (16)
AT
Alphatax Tax Service✓ VerifiedIRS PTIN
CPA FirmThousand Oaks, CA
CPA Firm in Thousand Oaks, California offering bookkeeping, and tax preparation. Rated 4.3★ across 7 Google reviews.
4.3 (7)
FI
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning. Rated 3.9★ across 19 Google reviews.
3.9 (19)
TA
TD Ameritrade✓ Verified
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning, and advisory. Rated 3.9★ across 8 Google reviews.
3.9 (8)
TW
BookkeepingThousand Oaks, CA
Bookkeeping in Thousand Oaks, California offering bookkeeping.
3.7 (3)
BO
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning, and advisory. Rated 3.2★ across 13 Google reviews.
3.2 (13)
BB
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering advisory. Rated 2.5★ across 22 Google reviews.
2.5 (22)
BO
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning, and advisory. Rated 2.4★ across 25 Google reviews.
2.4 (25)
BO
Financial PlanningThousand Oaks, CA
Financial Planning in Thousand Oaks, California offering financial planning, and advisory. Rated 1.9★ across 25 Google reviews.
1.9 (25)
LG
Laura GregIRS PTIN
AccountantThousand Oaks, CA
Accountant in Thousand Oaks, California offering accounting.
1.0 (1)

Top accounting firms in Thousand Oaks

#FirmServiceRatingReviews
1The Law Office of Jeffrey T. GillinghamCPA Firm 5.051
2Andrew P. Dragotto, CPATax Preparation 5.024
3Privity CPA Partners PCAccountant 5.020
4Big Munoz Insurance AgencyTax Preparation 5.015
5Jacobs & JacobsTax Preparation 5.010

More firms in Thousand Oaks

How to choose an accountant in Thousand Oaks

  • Verify credentials — a CPA holds a state Board of Accountancy license; a tax preparer should have a valid IRS PTIN and, ideally, an EA (Enrolled Agent) designation.
  • Match the specialty to your needs — small-business tax, S-corp/LLC filings, bookkeeping, or personal returns are different skill sets.
  • Confirm they e-file and use current software, and ask how they handle IRS notices or audits.
  • Get the fee structure in writing — hourly, flat per-return, or monthly retainer — before engaging.
  • Ask for an engagement letter defining scope, responsibilities, and deadlines.

What accountants cost

Typical national ranges: individual tax return $150–$450, monthly bookkeeping $200–$700, business return $500–$2,500+.

Cost guidance is a national reference range, not a quote — actual fees depend on return complexity, entity type, and the firm. Always request a written estimate.

Frequently asked questions

How many accountants are in Thousand Oaks?+

We list 26 accounting firms in Thousand Oaks, California that have a website and a public review record, 17 of which hold a 4.5★+ Google rating. 93 businesses in Thousand Oaks appear in the underlying public data.

How much does an accountant cost in Thousand Oaks?+

Fees vary by complexity and firm. As a national reference, an individual tax return typically runs $150–$450, monthly bookkeeping $200–$700, and a business return $500–$2,500+. Ask each firm for a written fee estimate.

Do I need a CPA or a bookkeeper?+

A bookkeeper records day-to-day transactions and reconciles accounts; a CPA is a state-licensed accountant who can also handle complex tax planning, audits, and represent you before the IRS. Many small businesses use a bookkeeper year-round and a CPA at tax time.

Are the ratings on this page real?+

Yes — ratings and review counts are aggregate figures from Google, attributed to Google, with a link to the firm's Google reviews. accounting8 does not host or write reviews.

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