Gain tax security and a consistent compliance framework for your e-commerce business
Everything in one place, with dedicated support and services tailored to your needs. Accounting?
Tax compliance? Extended Producer Responsibility (EPR)?
We take care of it for you.
Zjedź w dół
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E-commerce challenges
Do you feel like administrative obligations are getting in the way of your sales?
Complex regulations across multiple countries and language barriers
Managing communication with foreign tax authorities and determining when tax obligations arise can be difficult, especially since each business model is different and every country applies its own tax thresholds and regulations.
Manual conversion of marketplace data
Inconsistent data from marketplaces often requires manual file conversion, which is time-consuming and increases the risk of errors. With high transaction volumes, this quickly becomes unmanageable. This makes reliable reporting harder.
Fragmented services, scattered data, and anonymous support
Disconnected processes and the lack of one dedicated point of contact often create unnecessary chaos. Businesses need one partner who can integrate VAT compliance, accounting, and environmental obligations while providing clear, ongoing support.
Unexpected tax obligations and time pressure
Many businesses only become aware of their tax obligations after they have already started selling. Every day of delay can result in additional costs, penalties, and unnecessary stress.
Challenges in managing multi-channel sales accounting
Inconsistencies between accounting systems, payment platforms, and marketplaces can lead to reporting errors, financial losses, penalties, or even blocked sales.
Increased responsibilities resulting from EPR regulations
As an e-commerce seller, you must meet obligations such as registration and reporting related to packaging, electronics, or batteries – often across several countries at the same time.
We understand your challenges
Our clients consistently face the same recurring issues that slow down the growth of their e-commerce businesses. We help you organise these processes and transform them into a secure, scalable, and reliable system.
Working with EFF
Sell more without risk
See how we can make it happen
Tax security
We ensure full VAT and ERP compliance, helping you avoid financial penalties, account suspensions, and blocked sales on the marketplaces where you operate. This gives you more stability and better control over your tax processes across different markets.
One integrated service for all your obligations
We provide VAT compliance, accounting, and EPR support within one coordinated service package – with one schedule, one documentation flow, and one clear process. This reduces the risk of fragmented data and gives you greater control.
One dedicated manager = one point of contact
We do not operate anonymously. You are in direct contact with a dedicated account manager who helps clarify any questions related to the services you choose. This significantly reduces the risk of misunderstandings.
Automation and data accuracy
We automate the collection, conversion, and validation of data – from marketplaces to accounting systems and ERP platforms. For you, this means consistent, accurate data and significant time savings.
Direct support in communication with authorities
We can represent you before tax and environmental authorities across Europe, managing correspondence, responses to official enquiries, and all required supporting documentation on your behalf, so you do not need to worry about language barriers.
Lower costs
We eliminate the risk of overpayments and incorrect classifications. We audit your data and declarations, identify and correct EPR misclassifications, and verify VAT rates, helping you avoid unnecessary costs. This helps you better control expenses.
Automation
Are you tired of manually converting marketplace data before submitting your VAT returns?
Manual data processing carries a high risk of errors and requires a significant amount of time and effort. We eliminate repetitive manual work through automation-based solutions.
Amazon, Allegro, eBay, Etsy, Shopify – or perhaps another platform? The platform doesn’t matter –
we support reporting from every marketplace, including yours.
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Process integration
Which areas of e-commerce can we support you
with?
All solutions in one place – one dedicated contact, one point of responsibility, and one clear process. This is the opposite of the anonymous, high-volume service model that dominates the market.
Choose one service or a complete package.
Tax advisory
Individual tax analysis to determine where and when registration is required. Clear identification of risks and opportunities.
Accounting
We integrate sales, payment, and logistics data into one consistent accounting process, ensuring full transparency and reliable financial reporting.
VAT compliance
A unified process for both domestic and international VAT reporting. Support with ViDA, VAT OSS, VAT IOSS, and INTRASTAT. Fixed, transparent pricing with no hidden costs.
EPR compliance
Compliance analysis, calculation of estimated fees, appointment of authorised representatives where required, and continuous monitoring of legislative changes.
Price
Our pricing plans
Are you interested in any of the packages below, or do you need a custom quote? We’ll find the right solution for you.
All-in-one Plan
from X* EUR
/month
Package for sellers who…
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Accounting Package
From X* EUR
/miesiąc
Pakiet dla sprzedawców, którzy....
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VAT Package
From X* EUR
/month
Package for sellers who…
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ERP Package
From X* EUR
/month
Package for sellers who…
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*Prices shown do not include VAT.
Services
Who this offer for?
Polish e-commerce businesses selling across the EU and globally
Companies operating on any marketplace platform
B2B and B2C businesses looking to scale sales without tax risk
Teams that need a strategic partner, not just an accountant
Partnership
What will our cooperation look like?
A simple and structured onboarding process, during which we stay in constant contact
(via email and phone)
(via email and phone)
Step 1. Sales model and market analysis
We first assess your sales model to identify potential tax and operational risks that could slow down your growth. This allows us to determine exactly which obligations apply to your business in each market.
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Step 2. VAT and compliance verification
We check where you need to register, which VAT returns to file, and how to ensure your sales are fully compliant with regulations. You receive a clear list of requirements, helping you avoid penalties and marketplace restrictions.
Step 3. Defining the scope of services and integrations
We tailor our services to your needs — from VAT and accounting to integrating your data with sales platforms. This reduces manual work and gives you full control over your processes.
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Step 4. Ongoing support and reporting
We take over your administrative responsibilities, monitor deadlines, and prepare reports. You gain peace of mind knowing everything is handled correctly and on time.
Step 5. Ustalenie co tu miało byc
Uzupełnić tekst
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Contact us
Scale your sales without risk.
We will streamline your VAT, accounting, and EPR compliance processes.
Our experience in numbers:
100
Specialists
0
Languages we
communicate in
communicate in
100+
Satisfied clients
0
Years on the market
Talk to our experts
Testmonials from our clients
Real stories, real results
Read authentic reviews and testimonials from our satisfied clients.
Work with usWe have the pleasure to work with 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.
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.
We at Euroflorist are very pleased with EFF's high competence and ability to adapt to our changing needs.
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.
Across the years of working with 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.
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.
For years, EFF has been our trusted partner in supporting businesses across the EU and in the UK with international accounting. As our official and long-term collaborator, they deliver exceptional service and a professional approach to every challenge. Through our partnership, we've helped hundreds of businesses take their operations to the next level.
We greatly value our partnership with EFF. We have worked with them for quite some time; the cooperation has always been smooth and their services consistently meet the highest standards.
EFF is a young and dynamic team of professionals delivering services of the highest standard. They always respond quickly, providing thorough answers to any questions. Working with them guarantees quality and flexibility – they adapt perfectly to the individual needs of the client. Thanks to their support in areas like accounts, SAP Concur, and process development for new business directions, we can operate smoothly and efficiently. Such quality is truly rare!
Working with EFF has been a great experience. They are professionals in their field; their skilled and friendly employees consistently meet our strict deadlines with the integrity we require as a global company. EFF quickly took over our financial administration, ensuring accurate and timely reporting while providing clear and insightful advice for our daily operations. As part of a large international corporation with high standards, we are confident that choosing EFF as our financial partner was the right decision. We highly recommend them for all financial and fiscal services.
FAQ
Frequently Asked Questions
Still looking for answers? We’re here to provide them.
Does your offer include preparation for ViDA and e-invoicing?
Yes.
We help companies:
- prepare their systems and processes for ViDA (VAT in the Digital Age),
- organise data for digital reporting,
- implement e-invoicing in line with new regulatory requirements.
Our support starts before new regulations come into force — not after.
Do I need to register for VAT in every country where I sell?
Not always.
We help determine when:
- OSS / IOSS is sufficient, or
- local VAT registration is required (for example, foreign warehousing, FBA, or a specific sales model).
We identify the safest and most efficient structure for your business model.
Who is subject to Extended Producer Responsibility (EPR)?
EPR applies to any business which as part of its operations:
- places packaging or packaged products on the EU market,
- packs products into packaging,
- imports packaged products from outside the EU,
- makes packaged products available or sells them on the EU market.
Check which obligations apply to you if you operate as:
- producer,
- importer,
- distributor,
- marketplace seller.
What determines the cost of cooperation?
The cost depends on:
- the number of markets,
- your sales model,
- transaction volume,
- the level of automation required.
You can outsource a single service or entrust us with the entirety of your accounting, VAT compliance, and EPR processes. We offer both pricing packages and individual quotations tailored to your business needs — with no hidden costs.
Do you work with small businesses or only large companies?
We support both:
- growing e-commerce businesses,
- medium-sized and large international companies.
The scope of services and the level of automation are always adjusted to the scale of your business.
