Active · per the CBE, 1 October 2026

Sigmatau

BE0466824772

Rechtspersoon Private limited company 1 establishment

Sigmatau is an accounting firm in Ukkel. Private Limited, started on 8 September 1999, 1 establishment.

Beersellaan 41, 1180 Ukkel

Behind the company: Serge Sztencel.

Active for

27 year

Financials

Financial year 2026

Sigmatau from Ukkel, company number BE0466824772, closed financial year 2026 with a result of € -7,611 after tax. For that financial year Sigmatau recorded a gross margin of € -6,766 and equity of € 15,949. Compared with financial year 2025, the result moved from € 193 to € -7,611. The company made a loss. The company holds a healthy buffer. A strong own buffer against the debts. The most recent annual accounts were filed with the National Bank of Belgium on September 17, 2026.

What it is worth Healthy

€ 15,949

▼ 32% vs 2025

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

Loss Caution

€ -7,611

▼ still € 193 profit in 2025

Profit after tax over the fiscal year.

Cash in the bank

€ 20,642

▼ 16% vs 2025

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

Where the profit goes Caution

Loss, nothing to pay out

Reserves fell to € -4,503.

People and assets in 2026

Full-time equivalents estimate

≈ 1

No payroll staff. One director, so that person most likely runs the business.

Debts at end 2026

Bank debt

None

No bank loans on the last day of the fiscal year.

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Key figures per fiscal year Download key figures (CSV)
2023202420252026Change 2025 → 2026
Gross margin € 4,981 € 396 € 1,302 € -6,766 ▼ € 8,068
Profit after taxes € 3,284 € -2,248 € 193 € -7,611 ▼ € 7,804
Equity € 25,615 € 23,367 € 23,560 € 15,949 ▼ 32%
Total debts € 3,078 € 5,850 € 2,606 € 2,336 ▼ 10%
Cash € 21,938 € 22,278 € 24,714 € 20,642 ▼ 16%
Retained profit € 7,023 € 4,775 € 4,968 € -4,503 ▼ € 9,471
Balance sheet total € 28,693 € 29,217 € 26,166 € 21,352 ▼ 18%

Key figures of Sigmatau, fiscal years 2023 to 2026, from the annual accounts filed with the National Bank of Belgium.Next annual account (fiscal year 2027) expected before 31 October 2027.

What happened to Sigmatau?

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

  • New annual accounts for financial year 2026: loss of € 7,611 (▼ € 7,804 vs 2025). Source: NBB ↗
  • New establishment in Ukkel. KBO
  • Start of the company according to the CBE. KBO

In short

From € 3,284 profit in 2023 to € 7,611 loss in 2026.

Paid € 849 in corporate taxes since 2023.

Best year ever: 2023, with € 3,284 profit.

Original PDFs at the National Bank ↗

A new publication or filing at Sigmatau? We notify you, reason included.

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My folder 3 companies
  • De Lijn 8 June 2026 New annual account 2025

    filed on 8 June 2026

    What was left

    € 20 k ▼ 91%

    Money in the bank

    € 178 k ▼ 98%

    Open the dossier →

  • NMBS 8 June 2026 New annual account 2025 What was left ▼ 80%
  • bpost 18 May 2026 New annual account 2025 What was left from loss to profit
Real filings at the National Bank

Management

Serge Sztencel
Sigmatau

Behind Sigmatau is Serge Sztencel.

See the full network in the app

Directors

According to the 2026 annual accounts

Serge Sztencel

Director

Establishments

Establishment units

Physical locations of this company

Registered office

Beersellaan 41

1180 Ukkel

2.093.568.024

Winston Churchilllaan 4 box 11

1180 Ukkel

Active since 20 January 2000

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

Details

Company number
0466.824.772
VAT number
BE 0466.824.772
Registered office
Beersellaan 41, 1180 Ukkel
Names & denominations
Sigmatau
Enterprise type
Rechtspersoon
Legal form
Private limited company
Legal situation
Normale toestand
Start date
8 September 1999
Peppol
Active · Active since 20 May 2025
Activities · NACE

Overige fiscale dienstverlening

Belastingconsulenten

Accountants en belastingconsulenten

Activiteiten op het gebied van computerconsultancy en beheer van computerfaciliteiten

Computeradviesbureaus

Computerconsultancy-activiteiten

View on CBE Public ↗ Annual accounts (NBB) ↗

Frequently asked questions

What does Sigmatau do?
Sigmatau is an accounting firm in Ukkel. Private Limited, started on 8 September 1999, 1 establishment.
What is the address of Sigmatau?
The registered office of Sigmatau is located at Beersellaan 41, 1180 Ukkel.
Is Sigmatau still active?
Yes. According to the CBE (1 October 2026) Sigmatau is active, legal situation “Normale toestand”, started on 8 September 1999.
Is Sigmatau registered on Peppol?
Yes, Sigmatau is registered on the Peppol network with ID 0208:0466824772.
What is the enterprise number of Sigmatau?
The enterprise number of Sigmatau is BE0466824772.
When was Sigmatau founded?
Sigmatau was founded on 8 September 1999.