VAT OSS Filing Services – Accurate EU VAT Reporting Made Simple

Registering for the VAT One Stop Shop (OSS) scheme is only the first step in EU VAT compliance.

Once registered, businesses must submit quarterly VAT OSS returns — reporting all eligible EU sales, applying the correct country VAT rates, and paying tax centrally.

For many UK businesses, this is where compliance becomes challenging.

Tracking multi-country VAT rates, reconciling marketplace data, and meeting EU reporting deadlines requires specialist expertise.

At Audit Consulting Group, we provide fully managed VAT OSS filing services — ensuring your EU VAT returns are accurate, compliant, and submitted on time.

Our service removes administrative stress and protects your cross-border operations.

What Is VAT OSS Filing?

VAT OSS filing refers to the preparation and submission of quarterly VAT returns under the EU One Stop Shop scheme.

These returns include:

• Total EU B2C sales
• VAT charged per member state
• Country-specific VAT rates
• Currency conversions
• Adjustments or corrections

The return is submitted through your OSS registration country portal, and VAT is paid centrally for distribution across EU states.

Who Needs VAT OSS Filing Services?

You require OSS VAT filing if you:

• Are registered for the VAT OSS scheme
• Sell goods to EU consumers
• Provide digital services EU-wide
• Operate an eCommerce store shipping cross-border
• Exceed EU distance selling thresholds

Even small reporting errors can create compliance risks — making professional filing support highly valuable.

Why VAT OSS Returns Are Complex

Many businesses assume OSS filing is straightforward — until they attempt their first return.

Complexities include:

• Different VAT rates across 27 EU countries
• Reduced vs standard rate classifications
• Marketplace facilitator rules
• Currency conversions into euros
• Returns corrections for prior periods

Without specialist oversight, businesses risk under- or over-reporting VAT.

VAT Rates Across the EU – A Compliance Challenge

Each EU country applies its own VAT rates.

For example:

• Germany → Standard + reduced rates
• France → Multiple VAT tiers
• Italy → Sector-specific rates
• Netherlands → Mixed product rates

If incorrect VAT is charged or reported, tax authorities may impose adjustments or penalties.

We ensure country-specific VAT accuracy in every OSS return.

VAT OSS Filing for eCommerce Sellers

Online sellers generate high transaction volumes — making OSS reporting data-heavy.

We support sellers using:

• Shopify
• Amazon
• WooCommerce
• Etsy
• eBay
• Magento

Our team extracts, reconciles, and structures EU sales data for compliant OSS submissions.

Marketplace vs Direct Sales Reporting

VAT treatment differs depending on how sales are made.

Marketplace Facilitated Sales

Platforms like Amazon may collect VAT on your behalf in certain cases.

Direct Website Sales

You remain responsible for VAT charging and OSS reporting.

We separate marketplace and direct sales correctly within your VAT OSS returns.

Digital Services & OSS VAT Filing

Businesses selling digital services must also file OSS returns.

This includes:

• Online courses
• Software subscriptions
• SaaS platforms
• Digital memberships
• Streaming services

VAT must be applied based on customer location — requiring accurate geo-data reporting.

We ensure digital sales are classified and reported correctly.

Our VAT OSS Filing Service – What’s Included

We provide full quarterly filing support:

• EU sales data review
• VAT rate validation
• Country allocation
• Currency conversion
• Return preparation
• Submission through OSS portal
• Payment guidance

Our goal is full compliance with minimal involvement required from you.

Our Filing Process

Step 1 – Data Collection

We gather EU sales reports from your platforms.

Step 2 – Data Reconciliation

We verify figures and transaction classifications.

Step 3 – VAT Calculation

We apply correct country VAT rates.

Step 4 – Return Preparation

We prepare your quarterly OSS return.

Step 5 – Submission

We file via the relevant EU tax portal.

Step 6 – Payment Support

We guide VAT payment allocation.

Why Businesses Outsource VAT OSS Filing

Outsourcing provides:

• Accuracy assurance
• Time savings
• Reduced admin workload
• Penalty risk reduction
• Expert VAT oversight

For scaling eCommerce brands, outsourcing OSS filing is often the most efficient compliance solution.

Why Choose Audit Consulting Group?

Clients trust us because we provide:

• Cross-border VAT expertise
• eCommerce VAT specialisation
• Marketplace data experience
• EU compliance knowledge
• Reliable quarterly turnaround

We act as an extension of your finance team.

Correcting Errors in VAT OSS Returns

Even well-organised businesses can make mistakes in VAT OSS reporting — especially when dealing with high transaction volumes, multiple platforms, and varying VAT rates.

Common OSS filing errors include:

• Applying incorrect VAT country rates
• Reporting sales in the wrong member state
• Omitting marketplace transactions
• Currency conversion inaccuracies
• Duplicate reporting
• Missing adjustments from prior quarters

If errors are discovered, they must be corrected in future OSS returns — following EU amendment procedures.

At Audit Consulting Group, we review historical filings and manage corrections professionally, reducing the risk of tax authority scrutiny.

Late VAT OSS Filing – Penalties & Risks

OSS returns must be submitted quarterly within strict EU deadlines.

Late filing can result in:

• Financial penalties
• Interest charges
• Compliance monitoring
• Removal from OSS scheme
• Requirement for multiple EU VAT registrations

Once removed from the scheme, businesses may face significantly higher administrative burdens.

We implement structured filing calendars and reminders — ensuring deadlines are never missed.

Record-Keeping Requirements for OSS VAT Returns

EU VAT authorities require detailed transaction records to support OSS submissions.

Businesses must retain:

• Customer location evidence
• VAT rates applied
• Sales invoices
• Marketplace reports
• Payment confirmations

Records must typically be kept for 10 years.

We help clients structure digital record systems aligned with OSS compliance standards.

Multi-Platform Sales & OSS Reporting

Many eCommerce businesses sell across multiple channels simultaneously.

For example:

• Shopify website
• Amazon marketplace
• Etsy store
• eBay listings

Each platform produces different reporting formats — which must be consolidated into one OSS return.

Our team standardises multi-channel sales data into compliant OSS reporting structures.

Currency Conversion in VAT OSS Filing

Although UK businesses often trade in GBP, OSS returns must be filed in euros.

This requires:

• Official ECB exchange rates
• Period-specific conversion
• Consistent methodology

Incorrect conversion can distort VAT liabilities.

We handle currency translation accurately within every filing period.

VAT OSS Filing for Scaling Businesses

As EU sales grow, OSS reporting becomes more complex.

Scaling businesses face:

• Higher transaction volumes
• Expanded EU customer bases
• Multiple VAT rate applications
• Increased audit risk

Our quarterly OSS filing service scales with your growth — maintaining compliance as your EU footprint expands.

Case Study – Shopify Brand With Multi-Country Sales

Client: UK beauty brand shipping to 18 EU countries.

Challenge:

Inconsistent VAT rate application across regions.

Our Work:

• Sales data audit
• VAT rate correction
• OSS return restatement

Outcome:

Accurate filings restored + future compliance framework implemented.

Case Study – Amazon & Direct Sales Reconciliation

Client: Electronics seller using Amazon + website store.

Issue:

Marketplace VAT collected but also reported in OSS — duplication risk.

Our Solution:

• Marketplace facilitator analysis
• Transaction separation
• Revised OSS submission

Result:

Overreported VAT corrected and compliance risk removed.

Case Study – Late OSS Filing Recovery

Client: Fashion retailer missed 2 quarterly deadlines.

Risk:

EU penalty exposure + potential scheme removal.

Our Action:

• Late return preparation
• Voluntary disclosure
• Authority liaison

Outcome:

Returns accepted with mitigated penalties.

Client Reviews

Sophie Reynolds
Reynolds Fashion House

“Our EU sales grew quickly and OSS reporting became overwhelming. Audit Consulting Group now manages our quarterly filings — accurate, timely, and stress-free.”

Marcus Adler
Adler Consumer Electronics

“We sell via Amazon and Shopify, and VAT reporting was confusing. Their team reconciles everything perfectly and submits our OSS returns without issues.”

Liam O’Connor
O’Connor Fitness Supplies

“Professional, responsive, and highly knowledgeable on EU VAT. Outsourcing our OSS filings has saved us huge amounts of time internally.”

Frequently Asked Questions – VAT OSS Filing

How often do OSS VAT returns need to be filed?

Quarterly — covering all EU B2C sales within the period.

When are OSS returns due?

Typically by the end of the month following each quarter.

Do I need to file if I had no EU sales?

Yes — nil returns may still be required depending on registration status.

Can you correct past OSS returns?

Yes. We manage amendments and adjustments within future filings.

What data do you need from me?

Usually:

• Sales reports by country
• Marketplace statements
• Website transaction exports

We provide a clear checklist.

Do you handle VAT payments too?

We guide you on payment allocation and deadlines.

What happens if VAT rates change?

We track EU VAT rate updates and apply them automatically.

Can OSS filing be combined with UK VAT returns?

Yes — but they are separate submissions. We can manage both.

Is OSS filing required for digital services?

Yes — if sold to EU consumers.

Do marketplaces remove my OSS obligations?

Not entirely. It depends on the transaction structure — we assess this.

Stay Compliant as Your EU Sales Grow

VAT OSS filing is not just an administrative task — it is a critical compliance obligation for cross-border trade.

Accurate reporting protects your business from:

• EU tax penalties
• VAT reassessments
• Marketplace disruptions
• Regulatory scrutiny

Professional oversight ensures filings remain accurate as your business evolves.

Ready to Outsource Your VAT OSS Filings?

If you are registered for VAT OSS and want peace of mind that your EU VAT reporting is handled correctly — we are ready to help.

Audit Consulting Group provides reliable, accurate, fully managed OSS filing services for UK businesses and eCommerce sellers.

Let us handle the compliance — while you focus on growing your international sales.

Get Started Today

Speak with our VAT specialists to:

• Review your OSS obligations
• Prepare upcoming filings
• Correct past returns
• Structure EU VAT compliance

We make quarterly OSS reporting simple and stress-free.