Top 11 Bookkeepers in the Oxnard-Thousand Oaks Area, CA (2026)
Key Takeaways
- First on the list: Harris Accounting Corp, scoring 42 with 77% of the evidence checked.
- We reviewed 70 firms here; 16 of the 19 that met the listing bar reached 70% evidence coverage, and the 11 with at least 6 documented items are numbered.
- Only 2 of 19 publish a price or a starting price, while 14 say nothing about fees.
- Compared with every firm we list, this group stands out on verified credentials: 5 of 19 hold a credential a third party confirms (26% against 15%).
Sources cited in this article: DNS check, Firm's own website, State accountancy board, and our published methodology.
70 profiles reviewed, 19 met the listing bar, 16 scored (evidence coverage of 70% or more). 11 document at least 6 of the items we score and are ranked by Evidence Score; the other 5 are under the list as Also scored.
Firms on this page have offices in Ventura (5), Camarillo (4), Simi Valley (4), Oxnard (3) and Thousand Oaks (3). The page covers 25 towns and cities in the metro area, and a firm elsewhere in California appears on the state page.
How this list is built: Methodology · Disclosures · About · Report a correction
This list numbers the 11 Oxnard-Thousand Oaks bookkeeping firms with enough documented evidence to rank, out of 19 that met our listing bar, and scores 5 more below it without a number. Start from what you need and use the filters: catch-up work (3 firms), a published price (2) and remote service (5).
Top 11 Bookkeepers in the Oxnard-Thousand Oaks Area, CA, Ranked by Evidence Score
- Harris Accounting Corp (Camarillo, CA). Evidence Score 42/100 at 77% coverage. Read the full profileDocuments 4 of 5 core services. Documented fit: Xero users.
- Privity CPA Partners (Thousand Oaks, CA). Evidence Score 41/100 at 72% coverage. Read the full profileDocuments 4 of 5 core services; CPA license verified with the state board.
- Arxis Financial (Simi Valley, CA). Evidence Score 38/100 at 74% coverage. Read the full profileDocuments 2 of 5 core services; CPA license verified with the state board. Documented fit: attorneys, manufacturing.Who they say they serve (self-reported): attorneys, manufacturing, contractors, real estate, healthcare.
- JR Bookkeeping (Ventura, CA). Evidence Score 38/100 at 74% coverage. Read the full profileDocuments 3 of 5 core services; publishes a starting price. Documented fit: catch-up and cleanup work; QuickBooks Online users.
- ASB Tax and Accounting (Oxnard, CA). Evidence Score 34/100 at 77% coverage. Read the full profileDocuments 5 of 5 core services. Documented fit: catch-up and cleanup work.
- Clear Vision Bookkeeping (Simi Valley, CA). Evidence Score 31/100 at 74% coverage. Read the full profileDocuments 4 of 5 core services. Documented fit: catch-up and cleanup work.
- Instrumental Tax Solutions, Inc. (Oxnard, CA). Evidence Score 30/100 at 74% coverage. Read the full profileDocuments 2 of 5 core services.
- Martin, Ketterling & Associates (Ventura, CA). Evidence Score 29/100 at 77% coverage. Read the full profileDocuments 3 of 5 core services.
- Andrew P. Dragotto, CPA (Thousand Oaks, CA). Evidence Score 28/100 at 75% coverage. Read the full profileDocuments 1 of 5 core services; CPA license verified with the state board; publishes prices. Documented fit: technology.Who they say they serve (self-reported): technology.
- TKT Tax & Accounting (Camarillo, CA). Evidence Score 26/100 at 77% coverage. Read the full profileDocuments 3 of 5 core services. Documented fit: real estate, attorneys.Who they say they serve (self-reported): real estate, attorneys, consultants.
- Freedom Accounting Solutions Inc. (Ventura, CA). Evidence Score 25/100 at 77% coverage. Read the full profileDocuments 3 of 5 core services; states it prices by quote.
Also scored
These firms reached 70% evidence coverage, but fewer than 6 of the items we score are documented for them, so they carry a score and no number.
| Firm | Where | Services documented | Software | Pricing | Credentials verified | Coverage | Evidence Score |
|---|---|---|---|---|---|---|---|
| Skidmore Markell & Co. | Simi Valley, CA Local | payroll coordination, month-end close | Not verified | Not verified | Not verified | 74% | 20 |
| Varshawsky Huber, LLP | Camarillo, CA | payroll coordination, month-end close | Not verified | Not verified | Not verified | 74% | 20 |
| Sunken Accountancy Corporation | Ventura, CA Local | AP/AR, payroll coordination, month-end close | Not verified | Not verified | Not verified | 77% | 19 |
| K & R Services Unlimited | Simi Valley, CA | AP/AR, payroll coordination | Not verified | Not verified | Not verified | 77% | 13 |
| Chien & Smith-Fricke | Camarillo, CA | Not verified | Not verified | Not verified | Active CPA firm or individual license | 72% | 10 |
Top firms in Ventura
JR Bookkeeping leads Ventura with an Evidence Score of 38/100 at 74% coverage. Also ranked in Ventura: Martin, Ketterling & Associates (29/100, 77% coverage), Freedom Accounting Solutions Inc. (25/100, 77% coverage).
Top firms in Camarillo
Harris Accounting Corp leads Camarillo with an Evidence Score of 42/100 at 77% coverage. Also ranked in Camarillo: TKT Tax & Accounting (26/100, 77% coverage).
Top firms in Oxnard
ASB Tax and Accounting leads Oxnard with an Evidence Score of 34/100 at 77% coverage. Also ranked in Oxnard: Instrumental Tax Solutions, Inc. (30/100, 74% coverage).
Top firms in Simi Valley
Arxis Financial leads Simi Valley with an Evidence Score of 38/100 at 74% coverage. Also ranked in Simi Valley: Clear Vision Bookkeeping (31/100, 74% coverage).
Top firms in Thousand Oaks
Privity CPA Partners leads Thousand Oaks with an Evidence Score of 41/100 at 72% coverage. Also ranked in Thousand Oaks: Andrew P. Dragotto, CPA (28/100, 75% coverage).
Comparison table
| Firm | Where | Services documented | Software | Pricing | Credentials verified | Coverage | Evidence Score |
|---|---|---|---|---|---|---|---|
| Harris Accounting Corp | Camarillo, CA Local + remote | monthly bookkeeping, AP/AR, payroll coordination, month-end close | Xero | Not verified | Not verified | 77% | 42 |
| Privity CPA Partners | Thousand Oaks, CA | monthly bookkeeping, AP/AR, payroll coordination, month-end close | QuickBooks | Not verified | Active CPA firm or individual license | 72% | 41 |
| Arxis Financial Says it serves: attorneys, manufacturing, contractors, real estate, healthcare | Simi Valley, CA Local | payroll coordination, month-end close | QuickBooks | Not verified | Active CPA firm or individual license | 74% | 38 |
| JR Bookkeeping | Ventura, CA Local | monthly bookkeeping, catch-up/cleanup, payroll coordination | QuickBooks Online | Publishes a starting price | Not verified | 74% | 38 |
| ASB Tax and Accounting | Oxnard, CA Local | monthly bookkeeping, catch-up/cleanup, AP/AR, payroll coordination, month-end close | Not verified | Not verified | Not verified | 77% | 34 |
| Clear Vision Bookkeeping | Simi Valley, CA Local + remote | catch-up/cleanup, AP/AR, payroll coordination, month-end close | Not verified | Not verified | Not verified | 74% | 31 |
| Instrumental Tax Solutions, Inc. | Oxnard, CA Local + remote | AP/AR, month-end close | QuickBooks | Not verified | Not verified | 74% | 30 |
| Martin, Ketterling & Associates | Ventura, CA Local | AP/AR, payroll coordination, month-end close | QuickBooks | Not verified | Not verified | 77% | 29 |
| Andrew P. Dragotto, CPA Says it serves: technology | Thousand Oaks, CA | payroll coordination | Not verified | Publishes prices | Active CPA firm or individual license | 75% | 28 |
| TKT Tax & Accounting Says it serves: real estate, attorneys, consultants | Camarillo, CA | AP/AR, payroll coordination, month-end close | QuickBooks | Not verified | Not verified | 77% | 26 |
| Freedom Accounting Solutions Inc. | Ventura, CA Local + remote | AP/AR, payroll coordination, month-end close | Not verified | Quote only (stated) | Not verified | 77% | 25 |
Also listed (not scored yet)
These firms met the listing bar but have under 70% evidence coverage, so they are not ranked.
| Firm | Where | Services documented | Software | Pricing | Credentials verified | Coverage |
|---|---|---|---|---|---|---|
| CPA Sarita Sharma | Oxnard, CA | monthly bookkeeping, AP/AR | Not verified | Quote only (stated) | Active CPA firm or individual license | 33% |
| Crystal Clear Accounting Services | Thousand Oaks, CA | payroll coordination, month-end close | QuickBooks | Not verified | Not verified | 28% |
| RS Accounting Says it serves: construction, real estate, medical, retail | Ventura, CA Local + remote | AP/AR, payroll coordination, month-end close | QuickBooks | Quote only (stated) | Not verified | 69% |
What the evidence shows
Pricing
2 of 19 firms here publish a price or a starting price, 3 say they quote, and 14 say nothing about fees (74%). Figures the firms publish themselves, as their sites word them: JR Bookkeeping ("starting at just $349/mo") and Andrew P. Dragotto, CPA ("$300 per month"). Ask for the fee and what it covers in writing before the first month starts.
Services and process
If you're behind, start with the 3 firms that say they do catch-up or cleanup work. On this page that's JR Bookkeeping, ASB Tax and Accounting and Clear Vision Bookkeeping. Fewer write down the process: 1 of 19 describes onboarding and 3 name a reporting schedule.
Software and remote work
QuickBooks leads the software firms here name (37%); after it come Xero 5% and QuickBooks Online 5%. If you run Xero, Harris Accounting Corp names it. Remote work is stated by 5 of 19; the filter above the list narrows to them.
Licenses and public records
California publishes records we can match, so we could check this group against them: 5 firms with an active CPA license or permit on California's published register. The CPA records we matched belong to Privity CPA Partners, Arxis Financial, Andrew P. Dragotto, CPA and Chien & Smith-Fricke. Each profile shows the license or permit number and the date we checked. Check any CPA claim yourself on the California Board of Accountancy lookup.
The ranking
The numbered firms score between 25 and 42; the median across every scored firm is 28.5. 5 more firms reached 70% coverage with fewer than 6 documented items, so they sit under the list as Also scored, without a number. The top of the list: Harris Accounting Corp (42 at 77% coverage), Privity CPA Partners (41 at 72% coverage) and Arxis Financial (38 at 74% coverage). Ventura has the most numbered firms (3), and the list spans 5 towns in all. A high-coverage firm with a modest score isn't a weak firm. Its site simply leaves more for you to ask.
Oxnard-Thousand Oaks area in figures
Shares of the 19 firms listed, from accepted evidence only. A firm with no evidence for an item counts as not stating it.
| Publish a price or starting price | 11% (2 of 19) |
|---|---|
| State they price by quote | 16% (3 of 19) |
| Say nothing about pricing | 74% (14 of 19) |
| Hold a third-party-verified credential | 26% (5 of 19) |
| State a reporting cadence | 16% (3 of 19) |
| Describe onboarding | 5% (1 of 19) |
| Offer catch-up or cleanup work | 16% (3 of 19) |
| Work remotely (stated) | 26% (5 of 19) |
| Most-mentioned software | QuickBooks 37%, Xero 5%, QuickBooks Online 5% |
| Median evidence coverage | 74% |
| Median Evidence Score (scored firms) | 28.5 |
Frequently Asked Questions
Which Oxnard-Thousand Oaks bookkeepers publish their prices?
JR Bookkeeping and Andrew P. Dragotto, CPA show a price or a starting price on their own site. Open a profile to see the exact wording and the page it came from.
Which firms in Oxnard-Thousand Oaks take on catch-up bookkeeping?
JR Bookkeeping, ASB Tax and Accounting and Clear Vision Bookkeeping say they do catch-up or cleanup work. The catch-up filter above the list shows only those firms.
Which Oxnard-Thousand Oaks bookkeepers work in Xero?
Harris Accounting Corp names Xero on its site. More firms here name QuickBooks, so ask which one a firm prefers before you switch anything.
Which Oxnard-Thousand Oaks bookkeepers say which industries they serve?
4 of 19 name them on their own sites, among them Arxis Financial (attorneys and manufacturing), Andrew P. Dragotto, CPA (technology), TKT Tax & Accounting (real estate and attorneys) and RS Accounting (construction and real estate). It's self-reported, so ask for a client reference in your trade.
Every place this page covers (25)
Bell Canyon, Camarillo, Casa Conejo, Channel Islands Beach, El Rio, Fillmore, Lake Sherwood, Meiners Oaks, Mira Monte, Moorpark, Oak Park, Oak View, Ojai, Oxnard, Piru, Port Hueneme, San Buenaventura (Ventura), Santa Paula, Santa Rosa Valley, Santa Susana, Saticoy, Simi Valley, Somis, Thousand Oaks, Ventura.
Sources and further reading
Dates are when we checked. Report an error.
- DNS checkChecked Sep 26, 2026
- Firm's own websiteChecked Sep 26, 2026
- State accountancy boardChecked Sep 26, 2026
- California Board of Accountancy: license lookupCalifornia Board of Accountancy
- California business entity searchState of California
- How the Evidence Score worksBookkeeping Index methodology
- Commercial disclosuresBookkeeping Index