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Submission of VAT, SAF-T, ECSL and INTRASTAT declarations



For more than 16 years, we have been supporting Polish and foreign companies in preparing and filing VAT, SAF-T, ECSL and INTRASTAT returns in various EU countries. The complexity and diversity of local tax regulations make Duni EFF an obvious choice for handling these types of tax obligations.


We offer a comprehensive package of services related to VAT, as well as SAF-T, ECSL and INTRASTAT or SAF-T:

review, analysis and audit of data prior to filing returns,

provision, creation and verification of standard reporting templates,

comprehensive preparation and submission of VAT returns and other reports in this regard,

correspondence and support in responding to inquiries from tax authorities and contractors,

ongoing advice on reporting and taxation in EU countries.


We file declarations on a global scale

Please see our offer in selected countries below



Successful registration for VAT in other EU countries inevitably involves the obligation to file cyclical declarations, as detailed in the internal regulations of EU countries. The most common VAT return, which includes all taxable transactions in a member country, is usually filed monthly or quarterly, less frequently on an annual basis. Unfortunately, the required information and its summaries vary drastically from country to country, which means that the declaration is prepared separately for each country. In addition, in selected countries and with other sales models, other reporting obligations must be met, such as - SAF-T, ECSL, INTRASTAT or SAF-T, which you can read more about here.



After successful registration, we offer our clients the opportunity to represent their company, and therefore the company's interests, before the local Tax Authority through Duni EFF. Thanks to this solution, we are always up to date with all the requirements of the Officials regarding our client's company. However, the entrepreneur is not left without information, as each correspondence also goes to the client, who has an overview of the current situation and sees the effects of our work. Thanks to this solution, the entrepreneur can focus on running their business, knowing that their company in terms of taxation is safely represented by Duni EFF. This is possible because Duni EFF works with certified tax advisors and a network of foreign tax advisors with the required professional qualifications. The representation service is always implemented in the model when Duni EFF handles the company's periodic returns in EU countries.

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Do you sell your products online?

Are you planning a foreign market expansion of your business? Are you starting selling on Amazon or eBay? Did your company exceed sales thresholds in cross-border selling and you are obliged to register for VAT in the recipient countries?

Ian Knapton
UK Sales Director

Clients about EFF

  • We are happy to recommend EFF company thanks to our successful cooperation so far. High quality of performed services, high availability and a wide scope of their offer are of a great value. Their trustworthiness is based on professional business service and efficient communication with a client.
    Agnieszka Strycharz
    Chief Accountant, Monolith Group
  • We have the pleasure to work with Duni EFF within VAT Compliance services, which we can honestly recommend for any company seeking a professional support in tax related problems or similar. We can always count on their reliable advice and prompt answers to all of our questions. Duni EFF experts’ big commitment and individual approach to a client cannot go unnoticed. Their high competence and vast professional knowledge ensure all our needs are met and it facilitates efficient cooperation.
    Małgorzata Łysio
    Administration Specialist,
  • Across the years of working with Duni EFF, we developed a fantastic professional relationship. Their services to us included AR and AP and I have to say, nothing was ever too much or too little for them to help us with. They were very efficient and knowledgeable, you could say I learned a thing or two from them! It was a pleasure to work with them.
    Sophie Thompson
    Payroll Specialist, Cloetta UK
  • Duni EFF are tax professionals in the European Union. In cooperation with them, I especially appreciate the individual approach to each case. In international sales, there are often non-standard situations, from which they always find a way out. Their experts have extensive knowledge and provide it in a very accessible way. Duni EFF is a proven, reliable partner in business.
    Miłosz Wójcik
    Chief Product Officer Nethansa
  • We at Euroflorist are very pleased with EFF's high competence and ability to adapt to our changing needs.
    Per Gränse
    CEO, Euroflorist
  • During our 5-years of cooperation with EFF we have significantly reduced operating costs and improved quality and transparency of our processes. Very positive and somewhat unexpected for us is how fast and smooth implementations have been.
    Hans Petterson
    Finance Director
  • I would strongly recommend the services of EFF. We have transferred a large part of our AP processes to EFF. The transfer was very efficient and unbureaucratic. The employees of EFF are very ambitious, focused and it is a pleasure to work with them. Thus we were able to increase the reliability and quality of our AP with the same number of employees. Through the competence and experience of EFF, at a good value for money, we can concentrate better on our main business.
    Jorg Schulz
    Sales Director
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