Company lists · Data refreshed September 2026

Top 25 Nonprofit outsourced accounting services based in San Diego, United States

Name: Nonprofit outsourced accounting services based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 92 companies tracked

RevenueBase identified 92 nonprofit outsourced accounting services headquartered in San Diego, United States as of September 2026 and tracks 1,089 professional contacts across them, including 347 with verified work emails. New York is the largest hub.

This list covers nonprofit outsourced accounting services headquartered in San Diego, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

92Companies

1,089Contacts tracked

347Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest nonprofit outsourced accounting services based in San Diego, United States

Ranked by team size

Top 25 of 92 nonprofit outsourced accounting services based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit outsourced accounting services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	VAN DEN Boom & Associates LLC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	137 contacts →
	Strong evidence “van den Boom & Associates is a life sciences focused firm that that specializes in supporting VC backed life science companies through outsourced finance, accounting, contracts…” Source: RevenueBase Database · checked Sep 21, 2026
2	Optima Office, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	120 contacts →
	Indirect evidence “At Optima Office, we understand the challenges businesses face with financial management and HR services.” Source: RevenueBase Database · checked Sep 21, 2026
3	Lohman & Associates, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	39 contacts →
	Partial evidence “Lohman & Associates is a professional services firm that provides finance and accounting advisory services to early-stage and growing companies.” Source: RevenueBase Database · checked Sep 21, 2026
4	Mission Edge	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	37 contacts →
	Partial evidence “Mission Edge provides comprehensive nonprofit services focused on helping organizations grow sustainably by relieving administrative burdens and strengthening operational capacity.” Source: RevenueBase Database · checked Sep 21, 2026
5	Back Office Support Solutions	Strong evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
6	Signature Analytics	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	19 contacts →
	Indirect evidence “When your business needs actionable insights from the story your financial data is telling you, turn to us.” Source: RevenueBase Database · checked Sep 21, 2026
7	Mead Consulting Group	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 21, 2026
8	Booxkeeping Corp	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Do you have a handle on how much your company made or lost in the last month?” Source: RevenueBase Database · checked Sep 21, 2026
9	Twin Oaks LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	10 contacts →
	Partial evidence “Twin Oaks LLP provides a comprehensive range of accounting and financial services to businesses across various industries.” Source: RevenueBase Database · checked Sep 21, 2026
10	RG Alliance Group LLC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “RG Alliance is an outsourced back-office support and bookkeeping firm based in San Diego, California.” Source: RevenueBase Database · checked Sep 21, 2026
11	Lyons Accountancy Group	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “Our goal is to provide you with the information and tools that help you build on your success and to have a measurable positive impact on your professional and personal financial…” Source: RevenueBase Database · checked Sep 21, 2026
12	Simplexity Services	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “Simplexity Services provides accounting and back-office services for startups and fast growing companies.” Source: RevenueBase Database · checked Sep 21, 2026
13	Rise Consulting Group, LLC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Strong evidence “Here at RISE Consulting Group, we offer outsourced accounting, financial, and other support services for privately held businesses, providing timely, accurate and actionable…” Source: RevenueBase Database · checked Sep 21, 2026
14	Bbbs INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “An accounting and bookkeeping services company with offices in California, Arizona, and Calgary, Alberta Canada.” Source: RevenueBase Database · checked Sep 21, 2026
15	Thrive Business Services	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Feeling overwhelmed about your business finances?” Source: RevenueBase Database · checked Sep 21, 2026
16	Diagrid Advisors	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Diagrid Advisors provides accounting, payroll, cybersecurity, IT, and HR services.” Source: RevenueBase Database · checked Sep 21, 2026
17	Hampton Nonprofit Management	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Hampton Nonprofit Management is referral-only boutique consulting firm that provides CFO / COO / Executive Director support and ongoing management services to nonprofit and…” Source: RevenueBase Database · checked Sep 21, 2026
18	Vector Business Solutions	Strong evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	4 contacts →
	Strong evidence “Vector Business Solutions provides NetSuite Projects, QuickBooks® Outsourced Accounting, projects and Controller Services.” Source: RevenueBase Database · checked Sep 21, 2026
19	Intandem	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “intandem is a boutique accounting firm specializing in fractional accounting and financial services for venture-backed startups.” Source: RevenueBase Database · checked Sep 21, 2026
20	SD Bookkeeping, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
21	Achieve Accounting	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “Achieve Accounting Consulting provides accounting, book-keeping, payroll, and consulting services to business in San Diego.” Source: RevenueBase Database · checked Sep 21, 2026
22	Weber CFO	Strong evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Strong evidence “Weber CFO is a specialty consulting firm created specifically to provide professional, scalable, and affordable Fractional CFO and Outsource Accounting solutions.” Source: RevenueBase Database · checked Sep 21, 2026
23	Intrinsic Accounting Services, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence “You should be focused on growing your business, not on keeping your own books or creating financials.” Source: RevenueBase Database · checked Sep 21, 2026
24	Avviso Financial	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence “Bookkeeping that cares about your business as much as you do.” Source: RevenueBase Database · checked Sep 21, 2026
25	CSCPA	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “We make your accounting better and your life easier.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: nonprofit outsourced accounting services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names nonprofit outsourced accounting services.
Partial evidence: Its own public description names part of nonprofit outsourced accounting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit outsourced accounting services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 92 nonprofit outsourced accounting services based in San Diego, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 347 reachable decision-makers.

Free signup · no credit card

View the full list →

Nonprofit outsourced accounting services based in San Diego, United States at a glance

As of Sep 21, 2026

31.9%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

265.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 92 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nonprofit outsourced accounting services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in San Diego, United States whose own description of what they do matches “nonprofit outsourced accounting services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names nonprofit outsourced accounting services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among nonprofit outsourced accounting services, and records with no verified work email. Companies headquartered outside San Diego are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 347 across the full list. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Nonprofit outsourced accounting services by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names nonprofit outsourced accounting services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many nonprofit outsourced accounting services are there based in San Diego, United States?

RevenueBase identified 92 nonprofit outsourced accounting services headquartered in San Diego, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

VAN DEN Boom & Associates LLC, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most nonprofit outsourced accounting services?

New York leads with 244 headquartered companies, followed by Houston (157) and Los Angeles (154).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 347 verified decision-maker contacts tracked across these 92 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 92 nonprofit outsourced accounting services based in San Diego, United States. Start with a free account, no credit card.

Download this list →

Related lists

Nonprofit outsourced accounting services by geography

Browse the directory

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 Smart Search, 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.