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Töökeskkonna Uuringud OÜ

Legal form:

Private limited company

Registry code:

10109548

VAT no.:

EE100139884

Fiscal-year period:

01.01 - 31.12

Established:

25.11.1996 (29)

Former business names:

Osaühing KALBURBELL

Capital:

40 900 EEK

Address:

Gonsiori tn 21-311, Kesklinna linnaosa, Tallinn, Harju maakond, 15020

Status:

Registered

Contacts

Email:

info@tku.ee

Phone:

+372 6612275

Industries

PROFESSIONAL, SCIENTIFIC AND TECHNICAL ACTIVITIES
Architectural & engineering activities; technical testing and analysis
Technical testing and analysis
71209 - Other technical testing and analysis

VAT liability

	Start	End
EE100139884	01.01.1994

Annual reports

Aggregate data

	Period	Submitted
2025	01.01.2025 - 31.12.2025	09.06.2026	Valid
2024	01.01.2024 - 31.12.2024	24.06.2025	Valid
2023	01.01.2023 - 31.12.2023	27.06.2024	Valid
2022	01.01.2022 - 31.12.2022	16.05.2023	Valid
2021	01.01.2021 - 31.12.2021	07.06.2022	Valid
2020	01.01.2020 - 31.12.2020	07.05.2021	Valid
2019	01.01.2019 - 31.12.2019	08.06.2020	Valid
2018	01.01.2018 - 31.12.2018	18.06.2019	Valid
2017	01.01.2017 - 31.12.2017	24.06.2018	Valid
2016	01.01.2016 - 31.12.2016	11.06.2017	Valid
2015	01.01.2015 - 31.12.2015	30.06.2016	Valid
2014	01.01.2014 - 31.12.2014	27.09.2015	Valid
2013	01.01.2013 - 31.12.2013	10.07.2014	Valid
2012	01.01.2012 - 31.12.2012	28.06.2013	Valid
2011	01.01.2011 - 31.12.2011	28.06.2012	Valid
2010	01.01.2010 - 31.12.2010	30.06.2011	Valid
2009	01.01.2009 - 31.12.2009	29.06.2010	Valid
2008	01.01.2008 - 31.12.2008	26.06.2009	Valid
2007	01.01.2007 - 31.12.2007	30.06.2008	Valid
2006	01.01.2006 - 31.12.2006	15.06.2007	Valid
2005	01.01.2005 - 31.12.2005	27.06.2006	Valid
2004	01.01.2004 - 31.12.2004	30.06.2005	Valid
2003	01.01.2003 - 31.12.2003	29.06.2004	Valid
2002	01.01.2002 - 31.12.2002	04.07.2003	Valid
2001	01.01.2001 - 31.12.2001	27.06.2002	Valid
2000	01.01.2000 - 31.12.2000	10.07.2001	Valid

Unsubmitted declarations

No unsubmitted declarations found

No unsubmitted declarations as of 09.09.2026.

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020406080100

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Tax data

	State taxes	Labour taxes	Taxable turnover	Employees
2026 Q2	3 184 €	2 043 €	10 807 €12.3%	2
2026 Q1	3 785 €	2 093 €	12 317 €29.3%	2
Kokku 2026:	6 969 €	4 136 €	23 124 €
2025 Q4	3 044 €	2 073 €	9 526 €42.9%	2
2025 Q3	4 829 €	2 073 €	16 677 €40.3%	2
2025 Q2	3 832 €	2 073 €	11 885 €21.3%	2
2025 Q1	4 039 €	2 104 €	15 096 €11.3%	2
Kokku 2025:	15 744 €	8 323 €	53 184 €2.6%
2024 Q4	4 260 €	2 029 €	17 017 €125.4%	2
2024 Q3	2 309 €	2 029 €	7 551 €58.6%	2
2024 Q2	3 879 €	1 353 €	18 237 €102.2%	2
2024 Q1	2 799 €	2 112 €	9 021 €25.9%	2
Kokku 2024:	13 247 €	7 523 €	51 826 €1.9%
2023 Q4	3 146 €	2 099 €	12 170 €43.9%	2
2023 Q3	2 146 €	1 400 €	8 457 €1.7%	2
2023 Q2	2 615 €	2 099 €	8 606 €63.5%	2
2023 Q1	5 711 €	2 176 €	23 589 €128.0%	2
Kokku 2023:	13 618 €	7 775 €	52 822 €4.7%
2022 Q4	3 053 €	2 217 €	10 348 €12.4%	2
2022 Q3	3 465 €	2 058 €	11 807 €18.0%	2
2022 Q2	4 216 €	2 225 €	14 396 €3.5%	2
2022 Q1	4 103 €	2 031 €	13 914 €5.4%	2
Kokku 2022:	14 837 €	8 531 €	50 464 €23.5%
2021 Q4	3 128 €	2 185 €	13 206 €11.5%	2
2021 Q3	3 716 €	2 185 €	11 845 €58.1%	2
2021 Q2	4 746 €	1 658 €	28 258 €122.8%	2
2021 Q1	3 432 €	2 185 €	12 683 €39.0%	2
Kokku 2021:	15 022 €	8 212 €	65 991 €2.8%
2020 Q4	5 271 €	2 219 €	20 799 €28.7%	2
2020 Q3	3 659 €	1 594 €	16 165 €18.4%	2
2020 Q2	3 207 €	2 185 €	13 655 €0.6%	2
2020 Q1	3 215 €	2 155 €	13 580 €16.2%	2
Kokku 2020:	15 352 €	8 152 €	64 198 €9.0%
2019 Q4	4 507 €	2 224 €	16 202 €24.1%	2
2019 Q3	4 681 €	2 224 €	21 335 €122.7%	2
2019 Q2	3 304 €	2 224 €	9 582 €18.5%	2
2019 Q1	3 582 €	2 308 €	11 762 €49.8%	2
Kokku 2019:	16 074 €	8 980 €	58 881 €2.5%
2018 Q4	4 724 €	1 452 €	23 441 €44.4%	2
2018 Q3	2 857 €	1 029 €	16 239 €198.6%	2
2018 Q2	1 554 €	1 265 €	5 439 €55.8%	2
2018 Q1	2 591 €	1 534 €	12 302 €11.1%	2
Kokku 2018:	11 726 €	5 280 €	57 421 €3.2%
2017 Q4	2 749 €	1 783 €	13 842 €83.0%	2
2017 Q3	1 931 €	2 009 €	7 565 €72.6%	2
2017 Q2	6 075 €	2 281 €	27 567 €166.1%	2
2017 Q1	2 272 €	1 607 €	10 359 €18.4%	2
Kokku 2017:	13 027 €	7 680 €	59 333 €28.7%
2016 Q4	4 828 €	3 134 €	12 702 €0.0%	2
2016 Q3	3 515 €	3 134 €	12 702 €12.6%	2
2016 Q2	5 355 €	3 588 €	14 540 €136.8%	2
2016 Q1	4 431 €	1 515 €	6 140 €34.9%	2
Kokku 2016:	18 129 €	11 371 €	46 084 €27.3%
2015 Q4	4 384 €	1 917 €	9 433 €47.1%	2
2015 Q3	6 027 €	3 624 €	17 831 €9.1%	2
2015 Q2	5 290 €	3 323 €	16 348 €17.2%	2
2015 Q1	5 628 €	4 012 €	19 740 €	2
Kokku 2015:	21 329 €	12 876 €	63 352 €

Revenue by industry

	2023	2024	2025
Other technical testing and analysis	47 490 €	49 817 €	56 281 €

Tax debts

No tax debt found

No tax debt as of 09.09.2026

Representatives

Name	Personal ID code	Date of birth	Role	Start	End
Enn Saretok	35109XXXXXX	01.09.1951 (75)	Board member	05.07.2001	-

3 inactive record hidden, extended access to the information portal is required to view history!

1 - 1 / 1 rows

Shareholders

Name	Personal ID code	Date of birth	Role	Share	%	Type	Start	End
Eha Reismaa	44411XXXXXX	24.11.1944 (81)	Shareholder	5 700,00 EEK	13,94	Joint ownership	01.09.2023	-
Ilve Kangro	45601XXXXXX	07.01.1956 (70)	Shareholder	5 700,00 EEK	13,94	Joint ownership	01.09.2023	-
Mare Remm	45402XXXXXX	27.02.1954 (72)	Shareholder	5 700,00 EEK	13,94	Joint ownership	01.09.2023	-
Renna Kangro	49009XXXXXX	04.09.1990 (36)	Shareholder	5 700,00 EEK	13,94	Joint ownership	01.09.2023	-
Tanel Kangro	37902XXXXXX	09.02.1979 (47)	Shareholder	5 700,00 EEK	13,94	Joint ownership	01.09.2023	-

34 inactive record hidden, extended access to the information portal is required to view history!

1 - 5 / 11 rows

Ultimate beneficial owners

Name	Personal ID code	Date of birth	Role	Start	End
Enn Saretok	35109XXXXXX	01.09.1951 (75)	Member of higher governing body (board or supervisory board)	04.04.2024	-

1 - 1 / 1 rows

Holdings in companies

No holdings in companies found

Company has no holdings in other companies

2026 Q2

Turnover

Amount

10 807 €

Monthly average

3 602 €

Per employee

1 801 €

Equity ratio

8,81%

Labour taxes

Turnover ratio

18,90%

Tax ratio

64,16%

Monthly average

681 €

Per employee

341 €

State taxes

Monthly average

1 061 €

Turnover ratio

29,46%

Estimated salary

Gross salary

815 €

Net salary

751 €

Aggregate data

	2025	2024	2023	2022	2021	2020	2019
Current assets	14 601 €30.1%	11 222 €24.8%	14 931 €29.1%	21 046 €10.7%	19 017 €18.9%	23 458 €30.6%	33 819 €
Non-current assets	1 417 €36.7%	2 240 €85.3%	15 279 €19.1%	18 888 €16.1%	22 515 €16.6%	27 010 €6.8%	28 984 €
Total assets	16 018 €19.0%	13 462 €55.4%	30 210 €24.4%	39 934 €3.8%	41 532 €17.7%	50 468 €19.6%	62 803 €
Short-term liabilities	4 965 €44.2%	8 904 €38.0%	6 450 €31.0%	9 343 €15.4%	8 095 €15.9%	6 986 €43.6%	12 377 €
Long-term liabilities	-	-	4 167 €39.1%	6 844 €28.9%	9 629 €24.5%	12 753 €19.1%	15 756 €
Total liabilities	4 965 €44.2%	8 904 €16.1%	10 617 €34.4%	16 187 €8.7%	17 724 €10.2%	19 739 €29.8%	28 133 €
Share or stock capital	2 614 €	2 614 €	2 614 €	2 614 €	2 614 €	2 614 €	2 614 €
Retained earnings	1 944 €88.6%	16 980 €19.7%	21 134 €0.3%	21 194 €24.6%	28 115 €12.3%	32 056 €7.3%	29 878 €
Net profit	6 495 €143.2%	-15 036 €261.9%	-4 155 €6 711.5%	-61 €99.1%	-6 921 €75.6%	-3 941 €280.9%	2 178 €
Equity	11 053 €142.5%	4 558 €76.7%	19 593 €17.5%	23 747 €0.3%	23 808 €22.5%	30 729 €11.4%	34 670 €
Turnover	56 281 €13.0%	49 817 €4.9%	47 490 €15.0%	55 903 €4.9%	58 785 €3.7%	61 068 €0.2%	61 164 €
Profit margin	11.54%138.2%	-30.18%245.0%	-8.75%7 918.1%	-0.11%99.1%	-11.77%82.4%	-6.45%281.2%	3.56%

Financial ratios

	2025	2024	2023	2022	2021
Profit and cash flow
EBITDA	V SYM	-CE ZHZ	UQ	4 099	-1 777
Liquidity
Current ratio	M.J	F.M	O.B	2.3	2.3
Quick ratio	U.L	U.A	Z.A	2.3	2.3
Cash ratio	P.U	W.Z	U.P	0.6	0.9
Efficiency
Days sales outstanding (dso)	JC.J	IS.E	JY.E	85.9	78.9
Asset turnover	S.V	B.R	X.X	1.4	1.3
Structure
Debt ratio	V.P	V.M	J.H	0.4	0.4
Profitability
Operating margin	HB.O%	-VR.Y%	-M.J%	0.8%	-10.7%
Net profit margin	OP.H%	-OK.F%	-W.S%	-0.1%	-11.8%
Return on assets (roa)	XQ.B%	-OU.D%	-HH.N%	-0.1%	-15.0%
Return on equity (roe)	WN.G%	-TMQ.T%	-DQ.D%	-0.3%	-29.1%

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Licences & notices

Type	Number	Field	Status	Start	End
Notice of economic activity	TEL001039	- > Electrical works	Valid	22.07.2008	-

1 - 1 / 1 rows

Regulations

Regulation no.	Date	Type	Status
Ä 10006957 / 13	01.09.2023	Entry - Amendment entry	Entered into force (01.09.2023)
Ä 10006957 / 12	15.10.2019	Entry - Amendment entry	Entered into force (15.10.2019)
Ä 10006957 / 11	23.08.2018	Entry - Amendment entry	Entered into force (23.08.2018)
Ä 10006957 / 10	20.03.2018	Entry - Amendment entry	Entered into force (20.03.2018)
Ä 10006957 / 9	16.01.2018	Entry - Amendment entry	Entered into force (16.01.2018)

1 - 5 / 10 rows

Real estate

No real estate found

Company has no real estate

Consumer Disputes Committee decisions

No consumer dispute committee decisions found

Company has not been issued consumer dispute committee decisions

Official announcements

No official announcements found

Company has no issued official announcements

Public transactions

Date	Party	Amount	Classification
16.04.2025	Sisekaitseakadeemia	183.00 € Received	NON-CURRENT ASSETS Tertiary education
18.10.2024	OÜ Rail Baltic Estonia	551.44 € Received	OPERATING EXPENSES Rail transport
13.06.2024	Aktsiaselts Ida-Tallinna Keskhaigla	228.14 € Received	OPERATING EXPENSES General hospital services
11.04.2024	OÜ Rail Baltic Estonia	2 675.46 € Received	OPERATING EXPENSES Rail transport
05.01.2024	Aktsiaselts Ida-Tallinna Keskhaigla	1 808.40 € Received	OPERATING EXPENSES General hospital services

1 - 5 / 11 rows

.ee domains

Domain	Status	Registered	Expires	End
tku.ee	Active	04.07.2010	02.02.2027	-

1 - 1 / 1 rows

Enforcement proceedings

No enforcement proceedings found

Company has no active debts with bailiffs

Payment orders

No payment orders found

Company has no court-ordered payment orders