Company lists · Data refreshed September 2026

Top 25 Finance and accounting outsourcing companies based in San Diego, United States

RevenueBase identified 52 company matches for finance and accounting outsourcing companies associated with San Diego, United States as of September 2026 and tracks 785 professional contacts across them, including 182 with verified work emails and 227 with mobile numbers. Across the United States, New York is the largest hub for this category (122 companies); San Diego has 51.

This list covers company matches for finance and accounting outsourcing companies associated with San Diego, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 12, 2026 How this list was built
52Companies
785Contacts tracked
182Verified emails
227Mobile numbers
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The 25 largest finance and accounting outsourcing companies based in San Diego, United States

Ranked by team size
Top 25 of 52 company matches for finance and accounting outsourcing companies based in San Diego, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202651-200120 contacts →

Exact match

“At Optima Office, we understand the challenges businesses face with financial management and HR services.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
2Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-5039 contacts →

Exact match

“Lohman & Associates is a professional services firm that provides finance and accounting advisory services to early-stage and growing companies.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
3Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-5020 contacts →

Exact match

“Back Office Support Solutions is an outsourced accounting and operations firm that creates a tailored approach to support each client's specific needs in accounting/bookkeeping…”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
4Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202651-20019 contacts →

Exact match

“When your business needs actionable insights from the story your financial data is telling you, turn to us.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
5Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-5012 contacts →

Exact match

“Do you have a handle on how much your company made or lost in the last month?”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
6Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-1010 contacts →

Exact match

“Twin Oaks LLP provides a comprehensive range of accounting and financial services to businesses across various industries.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
7Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-509 contacts →

Exact match

“RG Alliance is an outsourced back-office support and bookkeeping firm based in San Diego, California.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
8Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-507 contacts →

Exact match

“Simplexity Services provides accounting and back-office services for startups and fast growing companies.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
9Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-507 contacts →

Exact match

“Here at RISE Consulting Group, we offer outsourced accounting, financial, and other support services for privately held businesses, providing timely, accurate and actionable…”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
10Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-507 contacts →

Exact match

“An accounting and bookkeeping services company with offices in California, Arizona, and Calgary, Alberta Canada.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
11Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
12Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-102 contacts →

Exact match

“You should be focused on growing your business, not on keeping your own books or creating financials.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
13Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-102 contacts →

Exact match

“Client-Centric Finance & Accounting plus Fractional Advisory Services”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
14Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 202611-502 contacts →

Exact match

“Founded in 2018, based in San Diego and with over 25 full time employees, we are a premier accounting and bookkeeping company.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
15Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-102 contacts →

Exact match

“Bookkeeping that cares about your business as much as you do.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
16Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-102 contacts →

Exact match

“Eventually, as your business grows, the bookkeeping and accounting is going to take more time than you have to commit to it.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
17Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“Are you feeling overwhelmed by the constant juggling act of managing your business finances alongside all your other responsibilities?”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
18Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“Contributing to the financial success of small businesses, Jaec Consulting is dedicated to providing professional, outsourced bookkeeping and accounting solutions with an in-house…”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
19Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“Account On Me for all of your accounting needs!”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
20Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“ESP Accounting is dedicated to serving nonprofit organizations in California.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
21Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“Strong bookkeeping professional skilled in: • Financial statement preparation which includes the Income Statement, Balance Sheet and Statement of Cash Flows, • Full cycle…”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
22Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“Welcome to All-In-One Business Solutions, but you can call us AIO, everyone else does.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
23Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“Managing your bottom-line is the difference between success and failure.” We understand managing your finances can be overwhelming, but they don’t have to be.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
24Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“We take care of your hot financial mess so you can focus on you, boo Want to work with us?”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
25Exact matchSan Diego, CA, United StatesHQ recorded Sep 12, 20261-101 contacts →

Exact match

“At Vehar Consulting, we believe that every business deserves more than just basic bookkeeping.”

Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase

Showing 25 of 52 finance and accounting outsourcing companies based in San Diego, United States

See the full list, filter by size, metro and specialty, and access 182 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Finance and accounting outsourcing companies based in San Diego, United States at a glance

As of Sep 12, 2026
23.2%Verified-email coverage
28.9%Mobile-number coverage
15.1Average contacts per company
1-10Median size (employees)
Sep 12, 2026Page data refreshed

Companies by employee count

1-10
34
11-50
14
51-200
4

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

Company record updated

Median 75.0d

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with San Diego, United States whose business descriptions match “finance and accounting outsourcing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 182 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “finance and accounting outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many finance and accounting outsourcing companies are there based in San Diego, United States?

RevenueBase identified 52 company matches for finance and accounting outsourcing companies associated with San Diego, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Optima Office, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most finance and accounting outsourcing companies?

New York leads the United States with 122 company records, followed by Houston (94) and Los Angeles (89). San Diego has 51.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 182 professional contacts with verified work emails tracked across these 52 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 12, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.