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Stichting Improve

VERIFIED Verified means a representative of this charity has claimed the profile and confirmed their identity. Verified owners can keep the profile current: description and mission, contact details, donation link, leadership and programs. Figures from official registry filings stay read-only.

Structurele mondzorg. Lokale kracht. Blijvende impact.

Ede, Gelderland · Netherlands RSIN 862192523 (KVK) Health
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91 / 100
Integrity score
Strong transparency

About

Stichting Improve makes people laugh again without pain. With your help we build clinics, train local care providers and make oral care accessible sustainably.

Stichting Improve zorgt dat mensen weer kunnen lachen zonder pijn. Met jouw hulp bouwen we klinieken, leiden we lokale zorgverleners op en maken we mondzorg duurzaam toegankelijk. Mondzorg voor iedereen.

Mission

The Improve Foundation has as its mission to achieve sustainable and accessible oral care for people who currently have no access to it, by setting up and supporting local clinics, training healthcare professionals and promoting prevention and awareness.

Stichting Improve heeft als missie om duurzame en toegankelijke mondzorg te realiseren voor mensen die daar momenteel geen toegang toe hebben, door het opzetten en ondersteunen van lokale klinieken, het opleiden van zorgprofessionals en het bevorderen van preventie en bewustwording.

Focus & reach

Category
Operating in (3)
Tanzania flagTanzania Senegal flagSenegal Sierra Leone flagSierra Leone
Causes
SDG alignment The 17 UN Sustainable Development Goals (SDGs) are the global agenda for ending poverty, protecting the planet, and ensuring prosperity by 2030. We tag each charity to the goals its work advances.
Who they serve
Minorities Students

Verification & registration

Every mark links to the official registry entry and opens in a new tab.

Integrity assessment

A score from 0 to 100 for how openly a charity shares public information across five areas: registration, financial disclosure, governance, contact details, and data recency. It does not measure programme impact. See exactly what we do and do not have →

Registration 20/20
Government registration ID on record +8
Sourced from official registry +4
Cross-referenced (2+ sources) +4
Claimed and verified by organization +4
Financial Transparency 30/30
Financial documents published on website +6
Financial filing on record +8
Revenue figure disclosed +6
Spending figure disclosed +6
Detailed financial breakdown disclosed +4
Governance 20/20
At least 1 officer disclosed +5
3+ officers disclosed +3
Officer titles disclosed +2
Executive compensation disclosed +4
Mission / description on file +3
Founding date on file +3
Contact Availability 10/10
Website +3
Email +3
Phone +2
Physical address +2
Data Recency 15/20
Updated within 1 year +15
Newer data needed for full score 0
Red flags 0
No red flags detected, so nothing is deducted 0

Financials

Annual financial statements
Annual revenue
€114,207
Reporting year
2024
To programmes
92%
See 5 years of financials
Revenue history, expense breakdowns, and balance sheet, free with an account.
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Leadership at a glance

Charity-submitted
HA
Harmen W••••••••
Co-Founder, Board Member
LU
Luke M••••••••
Treasurer
MA
Marijke W••••••••
Co-Founder, Board Member
MA
Mark W••••••••
Chair

Similar charities

GiveRadarGiveRadar Intelligence

GiveRadar Analysis

Based on the records currently verified by GiveRadar, Stichting Improve has a complete profile, cross-referenced across 3 independent sources including CBF.

  • This profile is owner-verified, which only 0% of comparable charities are. See national comparisons
  • It has more complete governance disclosure than nearly all comparable charities, because GiveRadar has verified leadership, executive compensation, a mission statement and a founding date. See national comparisons
  • Its integrity score of 91 places it in the top 1% of the 5,727 health charities in the Netherlands GiveRadar tracks, because GiveRadar has verified its financial disclosures and its registration. View this cohort
GiveRadar has verified
  • government registration
  • financial records (3 filed years)
  • disclosed leadership
  • a website
  • a contact email
  • a donation page

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Annual revenue
€114,207
92% to programs. Figures from Annual financial statements.
See 5 years of financials

Filing history

3 years on file from Annual financial statements: revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: 2024, 2023, 2022.
Annual report available Free with a GiveRadar account · log in to open
Financial details are free with a GiveRadar account

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Tax deductibility

Whether a gift to Stichting Improve lowers your own taxes depends on where you pay them. Choose your country to see the rule that applies.

Sometimes deductible

NL donations to Stichting Improve are tax-deductible only if the charity holds an active ANBI registration (Algemeen Nut Beogende Instelling). Check the charity's ANBI status before claiming a deduction.

This is general guidance, not tax advice. Confirm treatment with the charity or your tax advisor before donating.

Staff & volunteers

From filings and published profiles
Employees
4

Leadership & board

Charity-submitted

Board members and senior officers on record, with disclosed pay where available.

H.
H.K. W••••••••
CEO
See full names, roles, and stories

5 officers and trustees on file, free with a GiveRadar account.

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No red flags detected

Screened for the risks donors care about.
ANBI status revocation None found
Open investigations None found
Governance scandals None found
Related-party deals None found
Excessive exec comp None found

Timeline

From official filings

Key dates from this charity's official filings, newest first.

FY2024
Form filed
€0.1M revenue, Annual financial statements
FY2023
Form filed
€0.1M revenue, Annual financial statements
FY2022
Form filed
€0.1M revenue, Annual financial statements

In the news

From public news

No recent news coverage found

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Where it ranks

Top 1% of 5,727 health charities in the Netherlands on integrity score

The highest integrity score in this cohort (91/100). Positions are competition ranks: ties share a position. Cohorts are the tightest local peer set with at least 30 comparable organizations; a metric is left out where the cohort is too small or nearly uniform.

Integrity score91/100
Top 1% of 5,727
Governance disclosure5/5
#1 of 5,727
Contact completeness10/10
#1 of 5,727 tie
Profile completeness87%
#1 of 5,727 tie
Independent sources9 sources
#52 of 5,727 tie
Filing history depth3 years
#150 of 169 tie
Agefounded 2020
#476 of 542 tie
Revenue size$100K to $1M
#72 of 171 tie

Bars show the share of the cohort this charity outranks. Ranks describe how much is publicly disclosed, not how good the charity is.

How it stacks up against peers

Compared with 8 similar health charities in Netherlands.

Program spending Ahead of peers
This charity
92% Peer average
81%
Overhead (admin + fundraising) Ahead of peers
This charity
8% Peer average
19%
Integrity Assessment Ahead of peers
This charity
91 Peer average
86

Cause areas in Netherlands

Charities working in each area, this charity's highlighted.

Education
9,138
Arts & Culture
6,347
Health
5,728
Religion
5,388
Environment
2,778
International
1,517
Youth Development
1,329
Community Development
1,119
See all cause areas

Sources and verification

Registration and legal identity
Belastingdienst (Dutch Tax Authority) and KVK
Financial filings
Belastingdienst ANBI publication standard · Fiscal year 2024 most recent on file.
Officers and trustees
Belastingdienst (Dutch Tax Authority) and KVK · 5 disclosed in the public registry.
News and media coverage
GDELT Project + Google News

What we know and don't know

Every data point we track for this charity, and whether we have found it. Disclosure only, never a judgment of the charity's work.

Financial data
Named leadership
Government registration
Mission statement
Official website
Headquarters address
Direct contact
Tax-deductibility
Founding date
Executive pay
Programs & activities

Data freshness

How current this profile is, and when we last checked it against the official source.

Last updated
August 5, 2026
Profile edits and newly added data
Registry checked
August 30, 2026
Reconciled with the official source
Latest financials
Financial year 2024
Most recent filing on record
Profile completeness
75%
Data points we track that are filled in

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology
FAQ

Frequently asked questions about Stichting Improve

Stichting Improve is a registered health nonprofit based in Ede, Gelderland, Netherlands. It is registered with the Kamer van Koophandel (KVK). It was founded in 2020 and has been operating for 6 years. Its registration number is 862192523. According to GiveRadar's records, it holds a valid ANBI status with the Dutch Tax Authority (Belastingdienst), which means it is officially recognised as a Public Benefit Organisation (Algemeen Nut Beogende Instelling), donations to it are tax-deductible, and it is subject to ongoing oversight and public-disclosure requirements. GiveRadar's Integrity Assessment for the organization is 91/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports €114K in annual revenue. 5 officers and directors are publicly disclosed. No red flags have been detected.

Based on official filings, Stichting Improve has €114K in annual revenue. It allocates 92% of expenses to programs and services. This is above the average of 81% for health charities in Netherlands. Administrative costs account for 1% of expenses. Fundraising costs represent 8%. Its revenue is below the peer average of €11M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Stichting Improve makes people laugh again without pain. With your help we build clinics, train local care providers and make oral care accessible sustainably. Stichting Improve is classified as a health organization registered in Netherlands. The organization was founded in 2020.

Stichting Improve carries the CBF-Erkend Goed Doel label - the Dutch quality seal awarded by the Centraal Bureau Fondsenwerving (CBF). To qualify, a charity passes a three-yearly independent audit covering governance (separation of board, oversight, and management), financial transparency (audited annual accounts, clear expense breakdown), effective use of donations, responsible fundraising practices, and a working complaints procedure. You can read the public 'CBF-paspoort' for Stichting Improve here: https://cbf.nl/organisaties/8886. The passport shows the most recent audit outcome and the headline financial ratios.

As an ANBI, Stichting Improve is legally required to publish the following information on its own website, free of charge and without a login (the 'publicatieplicht' obligation under Uitvoeringsregeling AWR 1994 art. 1a): the policy plan, an overview of the past year's activities, the financial statements (balance sheet, profit-and-loss, explanatory notes), board composition with names, and the remuneration policy for directors and key staff. Larger ANBIs (turnover above €50,000) must also publish a fuller financial report using the Belastingdienst's standard ANBI publication form. If you cannot find these documents on the organisation's website, that is a red flag worth raising with the board before donating.

Stichting Improve is a Dutch foundation (stichting) - the most common legal form for charities and public-benefit organisations in the Netherlands. A stichting has no members, is governed by a board, and is established by notarial deed for a specific purpose. It is the only Dutch legal form that can hold ANBI (public-benefit) status without member oversight. There are about 250,000 stichtingen on file at the Dutch Chamber of Commerce (KvK), of which roughly 50,000 hold ANBI status with the Belastingdienst. It is registered with the Kamer van Koophandel (KvK), the Dutch Chamber of Commerce, with RSIN 862192523.

Stichting Improve's official registration number is 862192523, as recorded in the national registry of Netherlands.

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Quick facts about Stichting Improve

What is Stichting Improve?
Stichting Improve is a health foundation based in Ede, Netherlands. Stichting Improve makes people laugh again without pain. With your help we build clinics, train local care providers and make oral care accessible sustainably.
When was Stichting Improve founded?
Stichting Improve was founded in 2020.
Who leads Stichting Improve?
H.K. Westerduin serves as CEO.
Where is Stichting Improve located?
Headquartered in Ede, Gelderland, Netherlands. The charity operates in 3 countries.
What is Stichting Improve's annual budget?
Annual revenue for fiscal year 2024 is €114,207. 92% of expenses go to program services.
Is Stichting Improve trustworthy?
Stichting Improve has a GiveRadar Integrity Assessment of 91 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Stichting Improve's registration number?
Registration: 862192523 (Netherlands).
What is Stichting Improve's website?
https://www.stichtingimprove.nl
Are donations to Stichting Improve tax-deductible?
Donations may be tax-deductible for residents of Netherlands under local rules. US donors should check whether the charity has an equivalency-determination letter or a US-based fiscal sponsor before claiming a deduction.