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Search›Companies›CoStudy OÜ
16619718ActivePrivate limited companyEE102559815 · VAT-registered

CoStudy OÜ

Harju maakond, Tallinn, Nõmme linnaosa, Männiku tee 106·EMTAK 85691 — Education support services·3+ years
Andmed · ···
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Overview

e-Business Register · 18 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
24.11.2022e-Business Register
Address
Männiku tee 106, Nõmme linnaosa, Tallinn, 11216 Harju maakondADS · e-Business Register
E-mail address
costudyou@gmail.come-Business Register
Principal activity
EMTAK 85691 - Education support servicese-Business Register · ETCB
VAT number
ETCB · VAT-registered
Share capital
2500,00 €e-Business Register
Estonia's public business register
HomeViewsIndustriesBlogSourcesAbout

Public registry of Estonian companies — every fact traceable to a source and a date. Free and ad-free for everyone.

Nimistu MTÜ
Address: Parda tn 8, 10151 Tallinn, Estonia
E-mail: info@nimistu.ee

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  • Activity licences
  • Recent registrations

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© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Data · 6 sourcese-Business Register · 9 min agoMTA
e-Business Register ↗

Registered 24. november 2022, primary activity: Education support services. Main place of business in Nõmme linnaosa, Tallinn, Harju maakond.

Revenue 2026 II kv
542 500 €
▼ 8% vs 2025 II kv
As of 10.07.2026 (MTA)
Employees
1
2026 (MTA)
Taxes paid
3215 €
State + labour taxes · 2026 II kv
Tax debt
0 €
As of 10.08.2026 (MTA)
Revenue 2026 (I-II kv)
822k €
▼ 26% vs 2025 I-II kv
As of 10.07.2026 (MTA)
Employees
1
2026 (MTA)
Taxes paid
9k €
State + labour taxes · 2026 (I-II kv)
Tax debt
€0
As of 10.08.2026 (MTA)

Officers

e-Business Register · 18 h ago
OS
Olha Stoliarchuk
Born 1989 · 36 y · board member since 24.11.2022
Board member

Founders

e-Business Register · 18 h ago
OS
Olha Stoliarchuk
Born 1989 · 36 y · founder since 23.11.2022
Founder · 3k €

Shareholders

e-Business Register · 18 h ago
OS
Olha Stoliarchuk
Born 1989 · 36 y · shareholder since 01.09.2023
Shareholder 100% · 3k €

Annual reports (3)

e-Business Register · annual reports · 5 päeva tagasi
Revenue 2025
1,1m €
↘ -30.3% vs 2024
State taxes 2025
11k €
↘ -40.0% vs 2024
Employees 2025
1
0.0% vs 2024
YearRevenueProfitEquity

Taxes, revenue and employees

Estonian Tax and Customs Board · 10.07.2026 as of
1,0m €500k €0

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
02.06.2026ReportEsitati 2025. aasta aruanne— Käive 1 072 878 €
2025
29.05.2025ReportEsitati 2024. aasta aruanne— Käive 1 539 573 €

Connected companies

Same-person ties · e-Business Register

CoStudy OÜ is connected to 1 other company through 1 person who hold a role here and elsewhere. The strongest tie runs through Olha Stoliarchuk (1 company).

Total connections
1
via 1 person
Connecting people
1
Active here
Distinct roles
3
Board member · Founder
Strongest tie
Olha
1 company
Via personOlha Stoliarchuk
Assets
Employees
20251 072 878 €−71 138 €152k €155k €102.06.2026
20241 539 573 €132 741 €239k €241k €129.05.2025
2023788 518 €130 150 €132k €135k €126.03.2024
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
20222023202420252026
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2026I-II Q822 449 €3213 €6281 €1
20251 826 244 €11 026 €13 814 €1
20242 555 552 €18 391 €13 440 €1
20231 156 540 €10 787 €10 974 €1
2022––––
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 2026280k €543k €––
State taxes 20263k €0 €––
Taxes on workforce 20263k €3k €––
Employees 202611––
Revenue 2025525k €592k €333k €376k €
State taxes 20253k €0 €4k €4k €
Taxes on workforce 20254k €3k €4k €3k €
Employees 20251111
Revenue 2024555k €784k €549k €667k €
State taxes 20243k €6k €3k €7k €
Taxes on workforce 20243k €3k €3k €3k €
Employees 20241111
Revenue 202392k €122k €385k €558k €
State taxes 2023938 €3k €4k €3k €
Taxes on workforce 20231k €3k €3k €3k €
Employees 20231111
Revenue 2022––––
State taxes 2022––––
Taxes on workforce 2022––––
Employees 2022––––
1
OS
Olha Stoliarchuk
board member, founder, shareholder 100%
1 other company›
CompanyRoleReg. code
24Colab OÜ
Board memberShareholder 50%Founder
16827538

Analysis · 2025

computed from annual reports
Revenue1,1m €median 8k €128.8× the sector median
Net margin-6.6%median 28.0%-34.6 pp vs sector median
Revenue per employee1,1m €median 23k €46.1× the sector median
Revenue change-30.3%median 0.5%-30.8 pp vs sector median
Equity ratio97.7%
Current ratio42.96
Labour cost of revenue2.9%
Profit per employee−71 138 €
Compared with2024revenue 1,5m €

Peer group: Hariduse tugiteenused, 104 trading companies that filed a report in the last three years.

Founded 2022. That year 16,826 osaühing were registered; 16,285 are still trading, or 96.8%.