Tax advisory services for accounting firms

Support your firm and your clients can rely on

Accounting firms are operating under increasing pressure. Tax authorities now have extensive access to data through KSeF, JPK_VAT, JPK_CIT, TPR, STIR, MDR and DAC7, which they use to monitor tax compliance on an ongoing, virtually continuous basis. The number of tax verification activities is growing rapidly, customs and tax audits identify irregularities in almost nine out of ten cases, and each of them represents a genuine risk for both the client and those responsible for their tax compliance, including accountants and advisers working in accounting firms.

MDDP supports accounting firms and their clients in preparing for these challenges and responding with confidence when approached by the tax authorities.

Ceny transferowe a cło​

Rosnące wyzwanie dla firm o międzynarodowym zasięgu​​

Wzajemne oddziaływanie przepisów celnych i regulacji dotyczących cen transferowych staje się istotnym wyzwaniem dla firm prowadzących międzynarodową działalność.

Te dwa obszary – choć pełnią odmienne funkcje i opierają się na różnych regulacjach – coraz częściej oddziałują na siebie, wpływając na decyzje strategiczne przedsiębiorstw oraz ich obowiązki podatkowe i celne.

W kontekście globalnych zmian gospodarczych i politycznych firmy muszą uwzględniać wpływ tych przepisów na reorganizacje struktur kapitałowych, wybór lokalizacji centrów usług wspólnych, przenoszenie produkcji, kształtowanie struktur własności intelektualnej oraz na bieżącą politykę cen transferowych. Brak spójnego podejścia może prowadzić do poważnych konsekwencji finansowych i operacyjnych.

Dodatkowym wyzwaniem są korekty cen transferowych, rabaty retrospektywne oraz zmiany w wynagrodzeniach – które mogą być inaczej interpretowane przez organy celne i podatkowe. Aby ograniczyć ryzyko i zapewnić zgodność z przepisami, firmy powinny dążyć do zintegrowanego podejścia do zagadnień celnych i cen transferowych, traktując je jako wzajemnie powiązane elementy globalnej strategii zarządzania ryzykiem.

How we can help

Formę współpracy dostosowujemy do potrzeb konkretnego biura rachunkowego – od doraźnych konsultacji, przez stałe wsparcie merytoryczne, po pełną reprezentację w kontroli czy postępowaniu.

Day-to-day tax risk management

  • Preparing and implementing tax procedures, as well as procedures for tax verification activities and tax audits;
  • Assisting in obtaining instruments that enhance tax certainty, including individual tax rulings, Binding Rate Information (WIS), Binding Excise Information (WIA), protective opinions, WHT opinions and Advance Pricing Agreements (APAs).

Support in dealings with the tax authorities

  • Assistance during tax verification activities, including responses to official requests, communication with the tax authorities and development of an appropriate response strategy;
  • Representation during tax audits, customs and tax audits, and tax proceedings;
  • Support in other tax-related proceedings, including tax overpayments, tax refunds, tax penalties and enforcement proceedings.

Transfer pricing

Transfer pricing risk is no longer limited to large corporate groups. It increasingly affects medium-sized and smaller businesses served by accounting firms. We help identify and address these risks before the tax authorities do:
  • advisory services for transactions with related parties,
  • benchmarking studies and market analyses,
  • support in crisis situations,
  • assistance in identifying risks – financial transactions and cash pooling, intra-group services, cost recharges, reorganisations, transfer pricing adjustments.

Training and capability development

  • Training programmes for accounting teams and clients of accounting firms covering tax risks, tax audits, criminal fiscal liability and transfer pricing;
  • Programmes tailored to the specific needs of each accounting firm and the profile of its client base.

Why MDDP

For many years, we have advised and represented clients during tax verification activities, tax audits, customs and tax audits, tax and enforcement proceedings, as well as disputes before the administrative courts and the Court of Justice of the European Union. Our team comprises both tax advisers specialising in representing taxpayers and experts with experience gained within the tax administration, enabling us to understand matters from both perspectives.

We are one of Poland’s leading independent tax advisory firms, with a team of nearly 200 experts specialising in VAT, corporate and personal income taxes, transfer pricing, international and local taxation, tax and court proceedings, as well as customs and excise duties.

In 2025, we received the highest honours at the international ITR Tax Awards, winning Tax Disputes Advisory Firm of the Year and Tax Litigation Lawyer of the Year for the entire EMEA region.

Contact us

Are you wondering whether your accounting firm and your clients are prepared for a tax audit or tax verification activities? Do you have concerns regarding transactions with related parties or require support with transfer pricing documentation?

We invite you to contact the MDDP team of experts. Together, we will assess which steps should be taken to ensure that your firm and your clients remain tax compliant and well protected – both now and in the future.

Marta Klepacz kwadrat 1
Marta Klepacz

Partner | Transfer Pricing
E: marta.klepacz@mddp.pl
T: +48 533 889 036

Odpowiedzialność członków zarządu za naruszenia przepisów w zakresie zatrudnienia oraz PIT/ZUS
Jakub Warnieło

Partner | Tax adviser | Head of Tax Litigation Team
E: jakub.warnielo@mddp.pl
T: +48 600 816 431

Related insights