What is the main business of Duet Invest?

The main business activity of Duet Invest focuses on business and other management consultancy activities.

When was the company founded?

The company was registered in the Polish National Court Register (KRS) on April 3, 2018.

Where is the headquarters located?

The headquarters is located at: ul. Fitelberga 1, 40-588 Katowice.

What is the share capital?

The share capital of the company is PLN 100,000 (approx. $27,012).

What period do the latest financial data cover?

The latest available financial statement covers the period from January 1, 2025 to December 31, 2025.

Duet Investsp. z o.o.

Business and other management consultancy activities

KRS: NIP: REGON:

Overview

Status

Active

Registry date

2018-04-03

Share capital

100,000.00 PLN

Registered address

ul. Fitelberga 1, 40-588 Katowice, Poland

Financials

Only balance sheet data (assets and liabilities) is available. The income statement (P&L) is not available in the source filing for this period.

Revenue history

Filing timeliness

2 of 6 financial statements were filed late (the longest delay 435 days for 2022).

202515/07/2026
202424/06/2025
202318/06/2024
202222/09/2024
202119/09/2022
202013/10/2021

Filed on timeDelayFiling deadline

Data and insights are generated automatically from financial statements – they may contain errors and are neither a credit assessment nor business advice.

Industry

Authorized Representatives

Marta Madej Humpa – Attorney-in-fact

Janusz Madej – Vice President of the Management Board

Renata Madej – President of the Management Board

Manner of representation

In the case of a one-person management board, the member of the management board is authorised to make declarations of will on behalf of the company independently. If the management board consists of two or more persons, joint action by two members of the management board or by one member of the management board jointly with a commercial proxy is required to make declarations of will on behalf of the company.

Ownership

Owner	Shares	Share value	Stake
Janusz Madejage 66	80	$10,804.97	40%
Marcin Stefan Madej	20	$2,701.24	10%
Renata Madejage 61	80	$10,804.97	40%
Marta Madej Humpaage 35	20	$2,701.24	10%

Janusz Madej, Renata Madej and Marcin Stefan Madej hold a combined 90% – the ownership structure indicates family control.

Beneficial owners

Person	Rights

Debt

No entries in the National Debtors Register (KRZ).

Public aid

No public aid cases recorded in the last 10 years.

Competitors

Name	Revenue	Website
Ottima Plussp. z o.o.	$502,689.41	ottima-plus.com.pl
Pettersonsp. z o.o.	$286,210.33	petterson.pl
Simply Prosp. z o.o.	$77,582.54	simplypro.pl
DeweloperskieP.S.A.	$28,719.74	deweloperskie.pl
Inwestycje DeweloperskieP.S.A.	$7,990.23	deweloperskie.pl
LMF GroupS.A.	$5,301.41	lmfgroup.eu
Testdna Labsp. z o.o.	$2,530.69	testdna.pl
NO Doubt Doradztwo Gospodarczesp. z o.o.	$250.68	nodoubt.pl
Testdna Ekspertyzysp. z o.o.	$0.00	testdna.pl
Supra InvestmentsS.A.	–	gwarantgk.pl

Change history

Date	Event
2021-06-08	Address change (Ul. Kaskady 82a, 40-748, Katowice → Ul. Fitelberga 1, 40-588, Katowice)
2018-04-03	Entered in the register

FAQ

Last updated: 2026-07-16