Accounting Firm

Contract Administration Sp. z o.o.

Polish payroll and HR outsourcing firm serving employers in Poland and neighbouring countries

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Contract Administration Sp. z o.o. cover

TrustList summary

Contract Administration Sp. z o.o. is a Warszawa-based business process outsourcing company that runs payroll and personnel administration for other employers. It operates from seven locations across three countries and belongs to the Advartis group.

What Contract Administration Sp. z o.o. offers

Payroll outsourcing: calculates and processes pay for client workforces.
HR administration outsourcing: keeps personnel records and employment paperwork up to date.
Employee capital plans: handles the Polish PPK workplace pension scheme for employers.
Working time and benefits: time-and-attendance recording and administration of staff benefits.
Payroll and HR audits: reviews of existing payroll and personnel processes.
ASISTAR platform: its own system with an employee portal for e-payslips, tax forms and leave requests, digital personnel files and data exchange.

Who it works with

The company serves more than 500 clients from many sectors, and its staff bring experience of companies in a wide range of industries.

Key facts

Based in: Warszawa, Poland
Experience: more than 35 years
Team: over 250 specialists
Locations: 7 offices in 3 countries
Group: part of the Advartis group

Summary written by TrustList from the business's own published information, Sep 2026.

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Categories & features

Rankings

Contract Administration Sp. z o.o. is ranked on 5 TrustList rankings: #2 on 1, #7 on 1, #12 on 1, #24 on 1 and #25 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Contract Administration Sp. z o.o. has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Accounting firm · 5 rankings

#2of 8
Warszawa
It is the only one of the 8 here listing administration and automotive.
Its profile: “is a Warszawa-based business process outsourcing company that runs payroll and personnel administration for other employers.”
Of the 8 here, 4 also cover outsourcing and 4 also cover accounting.
Behind Bilans Accounting and Consulting Company, ahead of GLC siedziba Katowice.
#7of 9
Poland
It is the only one of the 9 here listing business services and consumer products & services.
Its profile: “- Based in: Warszawa, Poland - Experience: more than 35 years - Team: over 250 specialists - Locations: 7 offices in 3 countries - Group: part of the Advartis group Contract Administration Sp.”
Of the 9 here, 8 also cover tax and 5 also cover legal; 3 also work in Warszawa.
Behind Biuro podatkowo-rachunkowe, ahead of Grant Thornton Frąckowiak Sp. z o. o. Sp. k..
#12of 29
Supply chain logistics and transport
It is one of 2 here listing outsourcing and one of 7 here listing telecommunications.
Of the 29 here, 25 also cover business services and 23 also cover real estate; 2 also work in Montreal.
Behind CB Accounting LLC, ahead of Dawer and Co.
#24of 180
Outsourcing
It is the only one of the top 84 here listing supply chain, logistics, and transport and one of 2 here listing real estate.
Its profile: “is a Warszawa-based business process outsourcing company that runs payroll and personnel administration for other employers.”
Of the top 84 here, 12 also cover books and 11 also cover reporting; 3 also work in Delhi and 2 also work in Hong Kong.
Behind Contax360 BPO Solutions, Inc., ahead of COS Colombian Outsourcing Solutions.
#25of 162
Administration
It is one of 2 here listing information technology and medical.
Its profile: “is a Warszawa-based business process outsourcing company that runs payroll and personnel administration for other employers.”
Of the top 85 here, 14 also cover goals and 10 also cover government; 6 also work in Sydney and 5 also work in California.
Behind CASA Accountancy & Bookkeeping Ltd, ahead of Corporate Services Singapore.