Important now

Check our newest soultions in the scope of property tax, family foundations, R&D tax relief, B2B contracts and many more!  

Check our newest soultions in the scope of property tax, family foundations, R&D tax relief, B2B contracts and many more!  

Premiere of the Made in Poland Report 2024

Premiere of the Made in Poland Report 2024

Poland: A Prime Destination for Businesses Aiming to Contribute to Ukraine’s Recovery

Poland: A Prime Destination for Businesses Aiming to Contribute to Ukraine’s Recovery

ESG at ALTO – Ewa Solarz will head a new business line

ESG at ALTO – Ewa Solarz will head a new business line

CIT form with over 31 thousand transactions filed in half a day

Case study

Tax

In June 2021, ALTO technology team was asked to support our Client with the preparation of CIT/WZ attachments to CIT declaration of two related companies in the marketing industry. Due to the hassle of data preparation, the information to be reported was submitted to ALTO several hours before the deadline for submission to the tax administration. 

Both client companies had a total of 31,768 transactions to report, potentially reducing the tax base by PLN 7,638,226 (and consequently reducing the tax liability by PLN 1,451,263). 

To complete the task, ALTO reviewed the data and then used pre-prepared scripts to process the tax data. These scripts converted the data from Excel spreadsheet form to XML structures and then, after automated testing, attached the data to pre-filled CIT returns. 

This project required not only tax and programming knowledge, but also proper planning of computing resources. After supplementing the CIT-8 form with huge amounts of transactions in the CIT/WZ attachment, the PDF files containing these returns became very large – the smaller one had 1,976 pages, while the longer one had almost 3,400. Each time a sheet of this size was opened it took more than a quarter of an hour. To streamline the process, ALTO relied on, among others, cloud-based tools. 

 

CIT declarations, with all debtors reported, were submitted to tax authorities on time. 

You may be interested:

Case studies:

Tax

Wages for absence and R&D relief

Wages for absence and R&D relief

Tax

200% write-off under R&D relief vs. an individual interpretation

200% write-off under R&D relief vs. an individual interpretation
See all

Knowledge base:

Delivered form Poland report

Tax

23 October 2025

"Delivered from Poland" Report - Poland Remains Attractive for Business Services Sector Investment

Poland is consistently solidifying its position on the global map of business services sector investments. Stable economic foundat...

Read more
"Delivered from Poland" Report - Poland Remains Attractive for Business Services Sector Investment
international tax review itr world tax alto tax advisory poland

Tax

16 October 2025

Record-breaking recognition in the ITR 2026 rankings

The results of the ITR World Tax and ITR World TP 2026 rankings have just been announced, marking a year of breakthrough achieveme...

Read more
Record-breaking recognition in the ITR 2026 rankings
See all

Why ALTO?

At ALTO, people come first. Thanks to their knowledge and experience, we are able to deliver comprehensive support in every project, ensuring the highest quality of our services and giving our clients a sense of comfort and confidence.

We create an environment for growth – for our clients, to help them develop their businesses with us, and for our team members, so we can learn from one another and build the strongest community of experts in the market.

We aim high and think outside the box. We go beyond standards, combining expertise in tax, accounting, ESG and insurance with a deep understanding of diverse industries. We recognize the needs of both those who are just starting their businesses and well-established companies with years of experience.

Learn more!

We act globally

We are a member of international associations of advisory and accounting firms, which provides us and our clients with access to the expertise of tens of thousands of outstanding professionals across more than 100 countries.

14 years of experience

Our long-standing presence on the market allows us to look at the business from a cross-sectional perspective - we know what to do and how to do it to support you in achieving your goals.

170 people in the team

A constantly growing group of experts can contribute to the success of your company.

10,000+ cases

We help in both everyday aspects of running a business and in emergencies.

Kamil Lewandowski

Chief Executive Officer

Kamil is a co-founder and CEO at ALTO. He is responsible for the development strategy of the ALTO group. Additionally, he oversees activities in the area of ​​business development and marketing.

Paweł Fałkowski

Managing Partner, Accounting

Paweł is the firm’s co-founder and a Managing Partner at the accounting business line.

Sylwia Kulczycka

Managing Partner & Tax Advisor

Sylwia Kulczycka is a Managing Partner of the TAX business line at ALTO. She specializes in tax advisory services for the life sciences, IT and professional services industries.

Aleksandra Bońkowska

Partner & Tax Advisor

Aleksandra is a partner at ALTO. Before joining ALTO team, she worked in one of the big four companies. For many years, Ola has been advising clients in the financial industry, including in particular insurance companies, payment market institutions ...

Daniel Banach

Partner & Tax Advisor

Daniel is a partner at ALTO. He specializes in tax advisory for financial investors (mainly private equity funds) and for clients from the real estate industry.

Tobiasz Dolny

Partner & Tax Advisor

Tobiasz is a Partner at ALTO. He is the leader of a dedicated team at ALTO focused on tax advisory for investment funds and asset managers. His main areas of expertise include CIT, VAT and tax settlements of financial institutions

Ewa Solarz

Managing Partner / ESG

Ewa is the Managing Partner leading the ESG team at ALTO. She specialises in sustainability and ESG consulting.

Meet Us

Any questions?
Write or call us.

+48 22 652 27 51


    Administrators of the personal data are companies from the ALTO Group. More information on the processing of personal data is available in the privacy policy.

    Always be up to date
    - receive ALTO Alert

    I consent to receiving marketing information (including information about products, services, events, promotional offers, marketing research) from ALTO Group companies (listed in detail below) to the e-mail address provided.

    The administrators of your personal data are ALTO Group companies (ALTO Tax sp. z o.o., ALTO Accounting sp. z o.o., ALTO Advisory sp. z o.o., ALTO Risk Advisory sp. z o.o., ALTO ESG sp. z o.o., ALTO Broker sp. z o.o.), all with their registered offices in Warsaw at ul. Inflancka 4b, building C, 00-189 Warsaw (Joint Controllers). Your personal data will be processed for the purpose of providing marketing information (in accordance with the chosen communication channel). You have the following rights: access to your data, rectification, erasure, restriction of data processing, lodging a complaint with the supervisory authority. You can withdraw your consent at any time by sending a message to rodo@altoadvisory.pl or by clicking on the opt-out link in the footer of the email. Withdrawal of consent will not affect the legality of these activities before its withdrawal. More information on the processing of personal data can be found attutaj .