What is the main business of STL Concept?

The main business activity of STL Concept focuses on accounting, bookkeeping and auditing activities; tax consultancy.

When was the company founded?

The company was registered in the Polish National Court Register (KRS) on December 22, 2022.

Where is the headquarters located?

The headquarters is located at: ul. Przędzalniana 25B, 15-688 Białystok.

Who is on the management board?

The management board consists of: Mariusz Korsun (President of the Management Board).

What is the share capital?

The share capital of the company is PLN 10,000 (approx. $2,701).

What period do the latest financial data cover?

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

What revenue was generated?

In 2025, the company generated total revenue of $81,675, representing a decrease of 87.9% compared to 2024.

No, the company recorded a net loss of $4,118 in 2025.

Which cost dominates operating expenses?

The largest operating cost category falls under employee remuneration. This category amounted to $68,293 in 2025, representing 80% of all operating expenses.

STL Conceptsp. z o.o.

Accounting, bookkeeping and auditing activities; tax consultancy

KRS: NIP: REGON:

Overview

Status

Active

Registry date

2022-12-22

Share capital

10,000.00 PLN

Registered address

ul. Przędzalniana 25B, 15-688 Białystok, Poland

Financials

Revenue history (in k)

Filing timeliness

Financial statements were filed on time, on average 3 days early.

202515/07/2026
202411/07/2025
202311/07/2024

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.

Statistics

How the company ranks by revenue within its industry, region and across Poland in 2025.

Results vs industry

Revenue

This companyUSD 81.67kMedianUSD 82.63kAverageUSD 478.39k

Net profit

This companyUSD -4.12kMedianUSD 6.27kAverageUSD 42.76k

Operating costs

This companyUSD 85.17kMedianUSD 69.75kAverageUSD 417.95k

Assets

This companyUSD 32.77kMedianUSD 46.59kAverageUSD 356.02k

Industry

Authorized Representatives

Mariusz Korsun – President of the Management Board

Manner of representation

Each member of the management board is authorized to make declarations on behalf of the company independently.

Ownership

Owner	Shares	Share value	Stake
Mariusz Korsunage 46	100	$1,350.62	50%
Monika Milewska Korsunage 44	100	$1,350.62	50%

Mariusz Korsun and Monika Milewska Korsun hold a combined 100% – the ownership structure indicates family control.

Beneficial owners

Person	Rights

Bank accounts

Registered as a VAT taxpayer on 2023-02-01.

Erste Bank Polska
76 1090 2590 0000 0001 5564 4441

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
Kancelaria Biegłego Rewidenta Iwona Naumczyksp. z o.o.	$341,244.06	naumczyk.pl
Primenosp. z o.o.	$288,864.45	primeno.pl
Biuro Rachunkowe Kamińscysp. z o.o.	$274,687.08	brkaminscy.pl
Kancelaria Podatkowo-Księgowa Mirjansp. z o.o.	$208,259.16	mirjan.info
Advokatus Kancelaria Prawa Gospodarczego I Podatkowegosp. z o.o.	$192,279.43	advokatus.pl
Biuro Rachunkowe Cwalinasp. z o.o.	$84,609.00	brkcwalina.pl
Cross-Taxsp. z o.o.	$14,213.15	cross-tax.pl
Lexeconomicsp. z o.o.	$11,506.07	cft.pl
Wallet Rangerssp. z o.o.	$7,547.52	walletrangers.com
Biuro Rachunkowe Expertsp. z o.o.	$7,118.28	biuro-rachunkowe.expert