Active · per the CBE, 16 September 2026

ZIEZONDER

BE0801197333

Rechtspersoon Private limited company 1 establishment

ZIEZONDER is a specialist medical practice in Bilzen-Hoeselt. Private Limited, started on 26 April 2023, 1 establishment.

Tongersestraat 106, 3740 Bilzen-Hoeselt

Behind the company: Serdar Kartal, Evelien Dewilde, Rens Busschots.

Active for

3 year, 4 months

Warning lights

Signals from the annual accounts, the CBE and the Official Gazette, each with its threshold and source. No score, no verdict.

  • Tight liquidity NBB

    Cash and receivables cover 44 % of short-term debt in 2025; threshold 65 %.

Financials

Financial year 2025

ZIEZONDER from Bilzen-Hoeselt, company number BE0801197333, closed financial year 2025 with a result of € 565,647 after tax. For that financial year ZIEZONDER recorded a gross margin of € 1.3 million and equity of € 238,830. Compared with financial year 2024, the result moved from € 64,182 to € 565,647. Profitable, and profit is growing. The buffer is growing. High debts against a small own buffer. The most recent annual accounts were filed with the National Bank of Belgium on June 25, 2026.

What it is worth Growing

€ 238,830

▲ 245% vs 2024

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

Profit Growing

€ 565,647

▲ € 501,465 vs 2024

Profit after tax over the fiscal year.

Cash in the bank

€ 379,637

▲ 18% vs 2024

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

Where the profit goes Pays out

€ 396,000 paid out

70 % of the profit went to the shareholders, the rest stayed in the company.

People and assets in 2025

Full-time equivalents

3.6

▲ 1.4 vs 2024

Average over the fiscal year, from the social balance sheet.

Wage cost

€ 268,474

▲ 40% vs 2024

€ 74,600 per full-time equivalent. Payroll staff only. What the director pays themselves is already netted into the gross margin and is not shown separately in the accounts.

Vehicles and equipment

€ 192,577

▼ 12% vs 2024

Of which on lease € 186,982.

Debts at end 2025

Bank debt ≈ 6 years to go

€ 1.1 million

▼ 14% vs 2024

€ 183,908 is repaid this year. At this pace the long-term loan is gone in ≈ 6 years.

Owed to suppliers

€ 32,748

▼ 21% vs 2024

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

Taxes and wages

€ 215,561

▲ € 177,078 vs 2024

Taxes, VAT and social contributions still to pay.

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Key figures per fiscal year Download key figures (CSV)
20242025Change 2024 → 2025
Gross margin € 482,169 € 1,250,305 ▲ 159%
Profit after taxes € 64,182 € 565,647 ▲ € 501,465
Equity € 69,182 € 238,830 ▲ 245%
Total debts € 1,887,376 € 1,854,268 ▼ 2%
Cash € 321,627 € 379,637 ▲ 18%
Retained profit € 64,182 € 233,830 ▲ 264%
Dividend € 0 € 396,000
Bank debt € 1,264,198 € 1,086,030 ▼ 14%
Balance sheet total € 1,956,558 € 2,093,098 ▲ 7%
Employees (FTE) 2.2 3.6 ▲ 1.4

Key figures of ZIEZONDER, fiscal years 2024 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 ZIEZONDER?

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

  • New annual accounts for financial year 2025: profit of € 565,647 (▲ € 501,465 vs 2024). Source: NBB ↗
  • New establishment in Bilzen-Hoeselt. KBO
  • Start of the company according to the CBE. KBO

In short

From € 64,182 profit in 2024 to € 565,647 profit in 2025.

Paid € 165,857 in corporate taxes since 2024.

Best year ever: 2025, with € 565,647 profit.

On average € 347,300 of value added per employee in 2025.

Management

Serdar Kartal Evelien Dewilde Rens Busschots

Behind ZIEZONDER are Serdar Kartal, Evelien Dewilde and Rens Busschots. Serdar Kartal is also behind Oogcentrum ZIE and CKMS. Evelien Dewilde is also behind DR. RENS BUSSCHOTS EN DR. EVELIEN DEWILDE and Oogcentrum ZIE. Rens Busschots is also behind DR. RENS BUSSCHOTS EN DR. EVELIEN DEWILDE.

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Directors

According to the 2025 annual accounts

Serdar Kartal

Director

Also active at: Oogcentrum ZIE, CKMS

Evelien Dewilde

Managing director

Also active at: DR. RENS BUSSCHOTS EN DR. EVELIEN DEWILDE, Oogcentrum ZIE

Rens Busschots

Director

Also active at: DR. RENS BUSSCHOTS EN DR. EVELIEN DEWILDE

Establishments

Establishment units

Physical locations of this company

Registered office

Tongersestraat 106

3740 Bilzen-Hoeselt

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

Details

Company number
0801.197.333
VAT number
BE 0801.197.333
Registered office
Tongersestraat 106, 3740 Bilzen-Hoeselt
Names & denominations
ZIEZONDER
Enterprise type
Rechtspersoon
Legal form
Private limited company
Legal situation
Normale toestand
Start date
26 April 2023
Peppol
Active · Active since 16 Jul 2026
Activities · NACE

Activiteiten van medisch specialisten

Frequently asked questions

What does ZIEZONDER do?
ZIEZONDER is a specialist medical practice in Bilzen-Hoeselt. Private Limited, started on 26 April 2023, 1 establishment.
What is the address of ZIEZONDER?
The registered office of ZIEZONDER is located at Tongersestraat 106, 3740 Bilzen-Hoeselt.
Is ZIEZONDER still active?
Yes. According to the CBE (16 September 2026) ZIEZONDER is active, legal situation “Normale toestand”, started on 26 April 2023.
Is ZIEZONDER registered on Peppol?
Yes, ZIEZONDER is registered on the Peppol network with ID 0208:0801197333.
What is the enterprise number of ZIEZONDER?
The enterprise number of ZIEZONDER is BE0801197333.
When was ZIEZONDER founded?
ZIEZONDER was founded on 26 April 2023.