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Search›Companies›Calculus OÜ
11553498ActivePrivate limited company

Calculus OÜ

Harju maakond, Tallinn, Kesklinna linnaosa, F. R. Faehlmanni tn 38-9a·EMTAK 69202 — Bookkeeping, tax consulting·17+ years
Andmed · ···
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Overview

e-Business Register · 12 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
17.11.2008e-Business Register
Address
F. R. Faehlmanni tn 38-9a, Kesklinna linnaosa, Tallinn, 10125 Harju maakondADS · e-Business Register
E-mail address
ulm.kristi@gmail.come-Business Register
Telephone
+372 5068141· Telia Eesti ASe-Business Register · TTJA NBA
Principal activity
EMTAK 69202 - Bookkeeping, tax consultinge-Business Register · ETCB
Share capital
2556,00 €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
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© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Revenue
1200 €
▼ 0% vs 2024
Employees
–
2025 annual report
Taxes paid
–
Tax debt
0 €
As of 10.08.2026 (MTA)

Registered 17. november 2008, primary activity: Bookkeeping, tax consulting. Main place of business in Kesklinna linnaosa, Tallinn, Harju maakond.

Data · 5 sourcese-Business Register · 7 min ago
e-Business Register ↗
Revenue
1k €
▼ 0% vs 2024
Employees
–
2025 annual report
Taxes paid
–
Tax debt
€0
As of 10.08.2026 (MTA)

Officers

e-Business Register · 12 h ago
KU
Kristi Ulm
Born 1975 · 51 y · board member since 17.11.2008
Board member

Founders

e-Business Register · 12 h ago
KU
Kristi Ulm
Born 1975 · 51 y · founder since 17.11.2008
Founder

Shareholders

e-Business Register · 12 h ago
KU
Kristi Ulm
Born 1975 · 51 y · shareholder since 02.09.2023
Shareholder 100% · 3k €

Annual reports (7)

e-Business Register · annual reports · 5 päeva tagasi
Revenue 2025
1k €
0.0% vs 2024
Employees 2025
0
YearRevenueProfitEquityAssetsEmployees

Tech stack

Tehnoloogiad
Mobile carrier
+372 5068141Telia Eesti AS

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
26.06.2026ReportEsitati 2025. aasta aruanne— Käive 1200 €
2025
20.08.2025ReportEsitati 2024. aasta aruanne— Käive 1200 €

Connected companies

Same-person ties · e-Business Register

Calculus OÜ is connected to 1 other company through 1 person who hold a role here and elsewhere. The strongest tie runs through Kristi Ulm (1 company).

Total connections
1
via 1 person
Connecting people
1
Active here
Distinct roles
3
Board member · Founder
Strongest tie
Kristi
1 company
Via personKristi Ulm
20251200 €1159 €14k €20k €026.06.2026
20241200 €1163 €13k €20k €020.08.2025
20231200 €1184 €12k €20k €029.06.2024
20221200 €1050 €11k €20k €027.06.2023
20211165 €1037 €10k €20k €026.06.2022
20201105 €1136 €9k €20k €027.06.2021
2019975 €776 €7k €20k €031.10.2020
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
1
KU
Kristi Ulm
board member, founder, shareholder 100%
1 other company›
CompanyRoleReg. code
CleverCat OÜ
Board memberShareholder 100%
11153959

Analysis · 2025

computed from annual reports
Revenue1k €median 15k €8% of the sector median
Net margin96.6%median 14.1%+82.5 pp vs sector median
Revenue change0.0%median 2.2%-2.2 pp vs sector median
Equity ratio71.1%
Current ratio3.46
Labour cost of revenue0.0%
Compared with2024revenue 1k €

Peer group: Raamatupidamine, maksualane nõustamine, 6,319 trading companies that filed a report in the last three years.

Founded 2008. That year 4,466 osaühing were registered; 4,299 are still trading, or 96.3%.