Company lists · Data refreshed September 2026

Top 25 Guardianship accounting firms worldwide

RevenueBase identified 271 guardianship accounting firms worldwide as of September 2026 and tracks 1,220 professional contacts across them, including 485 with verified work emails and 229 with mobile numbers. The Netherlands is the largest market and Aa the largest hub.

This list covers guardianship accounting firms worldwide, 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 3, 2026. Country and city lists for guardianship accounting firms follow the table.

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 3, 2026 86% judged on-target in blind review
271Companies
1,220Contacts tracked
485Verified emails
229Mobile numbers
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The 25 largest guardianship accounting firms worldwide

Ranked by team size
Top 25 of 271 guardianship accounting firms worldwide, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to guardianship accounting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBoxmeer, NetherlandsHQ checked Sep 3, 202611-5036 contacts →

Indirect evidence

“Bewindvoerderskantoor Kroezen is er voor mensen die niet of onvoldoende zelfredzaam zijn.”

Source: RevenueBase Database · checked Sep 3, 2026
2Indirect evidenceDoral, FL, United StatesHQ checked Sep 3, 202611-5035 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 3, 2026
3Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 3, 202611-5032 contacts →

Indirect evidence

“Wij nemen zorgen bij onze cliënten weg op financieel gebied en ten aanzien van hun zorgbelangen.”

Source: RevenueBase Database · checked Sep 3, 2026
4Indirect evidenceEde, NetherlandsHQ checked Sep 3, 202611-5030 contacts →

Indirect evidence

“Melse Wassink is een dynamisch en onafhankelijk bureau voor professionele bewindvoering.”

Source: RevenueBase Database · checked Sep 3, 2026
5Indirect evidenceAj, NetherlandsHQ checked Sep 3, 202611-5029 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 3, 2026
6Indirect evidenceConcord, NH, United StatesHQ checked Sep 3, 202651-20026 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 3, 2026
7Indirect evidenceArnhem, NetherlandsHQ checked Sep 3, 202611-5026 contacts →

Indirect evidence

“GSBB staat voor financiële en persoonlijke zorg.”

Source: RevenueBase Database · checked Sep 3, 2026
8Indirect evidenceGreenwood Village, CO, United StatesHQ checked Sep 3, 202611-5024 contacts →

Indirect evidence

“Baysore & Christian Fiduciary Services, LLC is the premier provider of fiduciary services for Conservatorships, Estates, and Trust Administration in Colorado.”

Source: RevenueBase Database · checked Sep 3, 2026
9Partial evidenceLafayette, CA, United StatesHQ checked Sep 3, 202611-5023 contacts →

Partial evidence

“Fiduciary Accounting Services, LLC (FAS) is a specialized accounting firm that partners with trustees, attorneys, financial institutions and others with fiduciary accounting needs.”

Source: RevenueBase Database · checked Sep 3, 2026
10Partial evidenceGlendale, AZ, United StatesHQ checked Sep 3, 202611-5017 contacts →

Partial evidence

“Coventry, Vernon, and Roberts, LLC fulfills a variety of fiduciary roles, including: guardianships, conservatorships, healthcare and human services advocacy, trustee, and personal…”

Source: RevenueBase Database · checked Sep 3, 2026
11Partial evidenceSeattle, WA, United StatesHQ checked Sep 3, 202611-5016 contacts →

Partial evidence

“Ohana Fiduciary Corporation is a Washington State chartered trust company and certified professional guardianship agency, and also does business under the name Ohana Financial…”

Source: RevenueBase Database · checked Sep 3, 2026
12Indirect evidenceRotterdam, NetherlandsHQ checked Sep 3, 202611-5015 contacts →

Indirect evidence

“Bent u als hulpverleningsinstantie, zorginstelling, familie of particulier op zoek naar een gecertificeerd bewindvoerder, mentor of curator?”

Source: RevenueBase Database · checked Sep 3, 2026
13Indirect evidenceDrachten, NetherlandsHQ checked Sep 3, 202611-5013 contacts →

Indirect evidence

“Een financieel zorgeloos leven?”

Source: RevenueBase Database · checked Sep 3, 2026
14Indirect evidenceZwolle, NetherlandsHQ checked Sep 3, 202611-5013 contacts →

Indirect evidence

“Wij bieden zowel beschermingsbewind, curatele als mentorschap aan.”

Source: RevenueBase Database · checked Sep 3, 2026
15Indirect evidenceBg, NetherlandsHQ checked Sep 3, 202611-5013 contacts →

Indirect evidence

“Niet iedereen kan voor zichzelf zorgen of zijn of haar geld helemaal zelf beheren.”

Source: RevenueBase Database · checked Sep 3, 2026
16Partial evidenceMukilteo, WA, United StatesHQ checked Sep 3, 202611-5012 contacts →

Partial evidence

“Puget Sound Guardians (PSG) is a nonprofit agency offering guardianship of the person and estate, care management, trustee, probate, power of attorney, and contract services.”

Source: RevenueBase Database · checked Sep 3, 2026
17Indirect evidenceDronten, NetherlandsHQ checked Sep 3, 202611-5011 contacts →

Indirect evidence

“Bewindvoering Nederland helpt en ondersteunt mensen die niet in staat zijn hun financiële administratie bij te houden.”

Source: RevenueBase Database · checked Sep 3, 2026
18Indirect evidenceBg, NetherlandsHQ checked Sep 3, 202611-5011 contacts →

Indirect evidence

“Curatele, bewindvoering en mentorschap voor cliënten met een verstandelijke beperking.”

Source: RevenueBase Database · checked Sep 3, 2026
19Partial evidenceBeachwood, OH, United StatesHQ checked Sep 3, 20261-1010 contacts →

Partial evidence

“GUARDIAN CONNECTION partners with health care providers and families to provide comprehensive guardianship services.”

Source: RevenueBase Database · checked Sep 3, 2026
20Indirect evidenceNaples, FL, United StatesHQ checked Sep 3, 20261-1010 contacts →

Indirect evidence

“We offer professional fiduciary services to seniors, persons with disabilities or other individuals in need.”

Source: RevenueBase Database · checked Sep 3, 2026
21Indirect evidenceHs, NetherlandsHQ checked Sep 3, 20261-1010 contacts →

Indirect evidence

“Stichting FBBK behartigt al ruim 25 jaar de belangen van haar cliënten.”

Source: RevenueBase Database · checked Sep 3, 2026
22Indirect evidenceEindhoven, NetherlandsHQ checked Sep 3, 202611-509 contacts →

Indirect evidence

“Sinds 2004 zijn wij een beroepspraktijk voor curatele, beschermingsbewind, mentorschap en uitvoering (levens)testamenten in Noord-Brabant, Gelderland en Limburg.”

Source: RevenueBase Database · checked Sep 3, 2026
23Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 3, 202611-509 contacts →

Indirect evidence

“Rappórt bewindvoering & inkomensbeheer is een netwerkorganisatie van betrokken bewindvoerders die open, helder en betrokken de financiële zaken waarnemen van mensen die daar zelf…”

Source: RevenueBase Database · checked Sep 3, 2026
24Indirect evidenceAa, NetherlandsHQ checked Sep 3, 202611-509 contacts →

Indirect evidence

“Wij zijn gewoon harstikke goed in het beheren van geld én we geven echt om mensen.”

Source: RevenueBase Database · checked Sep 3, 2026
25Indirect evidencePeoria, AZ, United StatesHQ checked Sep 3, 202611-509 contacts →

Indirect evidence

“Our goal is to enable our clients to maintain their dignity and independence as long as possible.”

Source: RevenueBase Database · checked Sep 3, 2026

Showing 25 of 271 guardianship accounting firms worldwide

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Guardianship accounting firms worldwide at a glance

As of Sep 3, 2026
39.8%Verified-email coverage
18.8%Mobile-number coverage
4.5Average contacts per company
1-10Median size (employees)
3.0%Largest-city concentration · Aa
Sep 3, 2026Page data refreshed

Companies by employee count

1-10
214
11-50
47
51-200
3

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 guardianship accounting firms, 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.
Coverage
2 countries, largest first: the Netherlands, the United States. Country and city lists for guardianship accounting firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “guardianship accounting firms”. 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 guardianship accounting firms), 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 guardianship accounting firms, and records with no verified work email.
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, 485 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 3, 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.

Guardianship accounting firms by location

2 lists · largest first

Every Guardianship accounting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 guardianship accounting firms, 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 guardianship accounting firms are there worldwide?

RevenueBase identified 271 guardianship accounting firms worldwide 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?

Bewindvoerderskantoor Kroezen, headquartered in Boxmeer, tops this list with the largest team on record.

Which country has the most guardianship accounting firms?

The Netherlands leads with 172 companies, followed by the United States (99). Every guardianship accounting firms list by country and city is linked on this page.

Which city has the most guardianship accounting firms?

Aa leads with 8 headquartered companies, followed by Amsterdam (7) and Rotterdam (5).

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 485 verified decision-maker contacts tracked across these 271 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 3, 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 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.