Active · per the CBE, 18 September 2026
STUDIEBUREAU DIEDERIK AERTS logo

STUDIEBUREAU DIEDERIK AERTS

BE0689749974

Rechtspersoon Private limited company 1 establishment

STUDIEBUREAU DIEDERIK AERTS is filed with the CBE under the catch-all “Overige activiteiten van vrije beroepen en andere wetenschappelijke en technische activiteiten”. Also registered: testing and inspection body, engineering firm, healthcare practice. Private Limited, started on 2 February 2018, 1 establishment.

L. Lambrechtsstraat 19, 3730 Bilzen-Hoeselt diederikaerts.be [email protected]

Behind the company: Diederik Aerts, Inge Castermans.

Active for

8 year, 7 months

Financials

Financial year 2025

STUDIEBUREAU DIEDERIK AERTS from Bilzen-Hoeselt, company number BE0689749974, closed financial year 2025 with a result of € 62,349 after tax. For that financial year STUDIEBUREAU DIEDERIK AERTS recorded a gross margin of € 129,788 and equity of € 327,767. Compared with financial year 2024, the result moved from € 73,585 to € 62,349. The company is profitable. The buffer is growing. A strong own buffer against the debts. The most recent annual accounts were filed with the National Bank of Belgium on June 19, 2026.

What it is worth Growing

€ 327,767

▲ 23% vs 2024

Assets minus debts, by the books. What is left if everything were sold and paid today.

Profit Healthy

€ 62,349

▼ 15% vs 2024

Profit after tax over the fiscal year.

Cash in the bank

€ 127,191

▼ 8% vs 2024

Cash and bank balances on the last day of the fiscal year.

Where the profit goes Growing

Stays in the company

No dividend for 2025. Retained profit grew to € 309,167.

People and assets in 2025

Vehicles and equipment

€ 98,377

▲ 117% vs 2024

Book value of vehicles, furniture and equipment.

Debts at end 2025

Bank debt ≈ 20 years to go

€ 524,199

▲ 234% vs 2024

€ 26,523 is repaid this year. At this pace the long-term loan is gone in ≈ 20 years.

Owed to suppliers

€ 2,064

▲ 96% vs 2024

Supplier invoices still open on the last day of the fiscal year.

Taxes

€ 1,233

▼ 88% vs 2024

Corporate tax and VAT still to pay. No wage debt: nothing outstanding to staff or social security.

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Key figures per fiscal year Download key figures (CSV)
2022202320242025Change 2024 → 2025
Gross margin € 97,151 € 92,308 € 129,976 € 129,788
Profit after taxes € 53,164 € 49,830 € 73,585 € 62,349 ▼ 15%
Equity € 220,017 € 242,860 € 265,418 € 327,767 ▲ 23%
Total debts € 179,078 € 195,668 € 177,456 € 541,019 ▲ 205%
Cash € 118,432 € 108,875 € 138,787 € 127,191 ▼ 8%
Land & buildings € 257,061 € 245,407 € 235,954 € 615,215 ▲ 161%
Retained profit € 201,417 € 224,260 € 246,818 € 309,167 ▲ 25%
Dividend € 24,065 € 26,987 € 51,027 € 0 ▼ 100%
Bank debt € 163,133 € 182,076 € 157,121 € 524,199 ▲ 234%
Balance sheet total € 399,095 € 438,528 € 442,874 € 868,786 ▲ 96%

Key figures of STUDIEBUREAU DIEDERIK AERTS, fiscal years 2022 to 2025, from the annual accounts filed with the National Bank of Belgium.Next annual account (fiscal year 2026) expected before 31 July 2027.

What happened to STUDIEBUREAU DIEDERIK AERTS?

What happened at STUDIEBUREAU DIEDERIK AERTS in recent years, according to the Belgian Official Gazette, the CBE and the National Bank:

  • New annual accounts for financial year 2025: profit of € 62,349 (▼ 15% vs 2024). Source: NBB ↗
  • New establishment in Bilzen-Hoeselt. KBO
  • Start of the company according to the CBE. KBO

In short

From € 53,164 profit in 2022 to € 62,349 profit in 2025.

Paid € 65,787 in corporate taxes since 2022.

Best year ever: 2024, with € 73,585 profit.

Paid out € 102,079 in dividends to the owners in total.

Management

Diederik Aerts Inge Castermans
STUDIEBUREAU DIEDERIK AERTS

Behind STUDIEBUREAU DIEDERIK AERTS are Diederik Aerts and Inge Castermans.

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Directors

According to the 2025 annual accounts

Diederik Aerts

Director

Inge Castermans

Director

Establishments

Establishment units

Physical locations of this company

Registered office

L. Lambrechtsstraat 19

3730 Bilzen-Hoeselt

2.272.419.691

Kruisstraat 41

3730 Bilzen-Hoeselt

Active since 2 February 2018

Who else lives here?

A building full of entrepreneurs or one very busy letterbox? Another 1 companies are registered at this address.

All companies at this address →

What is an establishment unit? An establishment unit is a geographically identifiable place where activities of the enterprise are carried out.

Website

Technologies

Apache

Hosting & Email

Email provider

Self-hosted

Hosting

AS-ZXCS, NL

Website info

HTTPS Nee

Features

Security

HTTPS
SPF
DMARC

Network

IPv6

Details

Company number
0689.749.974
VAT number
BE 0689.749.974
Registered office
L. Lambrechtsstraat 19, 3730 Bilzen-Hoeselt
Names & denominations
STUDIEBUREAU DIEDERIK AERTS
Enterprise type
Rechtspersoon
Legal form
Private limited company
Legal situation
Normale toestand
Start date
2 February 2018
Peppol
Active · Active since 27 Jan 2026
Activities · NACE

Overige activiteiten van vrije beroepen en andere wetenschappelijke en technische activiteiten, neg

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Overige technische testen en toetsen

Activiteiten van ingenieurs en aanverwante technische adviseurs, exclusief landmeters-experts

Activiteiten van verpleegkundigen en verloskundigen

Overige activiteiten van gespecialiseerde designers

Frequently asked questions

What does STUDIEBUREAU DIEDERIK AERTS do?
STUDIEBUREAU DIEDERIK AERTS is filed with the CBE under the catch-all “Overige activiteiten van vrije beroepen en andere wetenschappelijke en technische activiteiten”. Also registered: testing and inspection body, engineering firm, healthcare practice. Private Limited, started on 2 February 2018, 1 establishment.
What is the address of STUDIEBUREAU DIEDERIK AERTS?
The registered office of STUDIEBUREAU DIEDERIK AERTS is located at L. Lambrechtsstraat 19, 3730 Bilzen-Hoeselt.
Is STUDIEBUREAU DIEDERIK AERTS still active?
Yes. According to the CBE (18 September 2026) STUDIEBUREAU DIEDERIK AERTS is active, legal situation “Normale toestand”, started on 2 February 2018.
Is STUDIEBUREAU DIEDERIK AERTS registered on Peppol?
Yes, STUDIEBUREAU DIEDERIK AERTS is registered on the Peppol network with ID 0208:0689749974.
What is the enterprise number of STUDIEBUREAU DIEDERIK AERTS?
The enterprise number of STUDIEBUREAU DIEDERIK AERTS is BE0689749974.
When was STUDIEBUREAU DIEDERIK AERTS founded?
STUDIEBUREAU DIEDERIK AERTS was founded on 2 February 2018.