Summary

When registering for OSS (One-Stop Shop) in Slovakia, you must declare all warehouse locations where your goods are stored — both in Slovakia and across the EU.

This enables the Slovak tax authorities to correctly assess your VAT and OSS reporting obligations.

✅ At registration

Provide full details of every warehouse or fulfilment centre (including Amazon FBA or third-party logistics (3PL) providers).

⚙️ If your storage setup changes

You must notify hellotax immediately with:

• New warehouse address and country
• Start date of storage
• Provider name (Amazon or 3PL)

hellotax will submit the required amendment to the Financial Directorate of the Slovak Republic.

⚠️ If you don't update

Your OSS returns may be delayed or rejected, and the tax authority may request additional information or carry out compliance checks.

💡 Tip

If you use Amazon FBA or Pan-European FBA, check your Seller Central inventory reports every month.

Amazon can automatically redistribute your stock between EU warehouses.

Notify hellotax whenever new storage countries appear.

Get the facts!

When registering for OSS in Slovakia, the tax authorities require complete transparency regarding where your goods are stored throughout the EU.

Accurate warehouse information helps ensure your VAT and OSS reporting remains compliant.

1️⃣ Why warehouse information is required

When applying for OSS registration in Slovakia, the tax authorities require:

• Full addresses of all warehouses and fulfilment centres.
• Confirmation of all countries where goods are stored.
• Details of third-party logistics providers such as Amazon FBA or other 3PL warehouses.

Providing accurate storage information helps ensure your VAT obligations are correctly assessed.

Incomplete information may delay registration or create issues with future OSS filings.

2️⃣ What happens if you change or add storage locations

Once registered for OSS, your warehouse information must remain up to date.

You should notify the Slovak tax authorities whenever you:

• Begin storing goods in a new warehouse.
• Stop using an existing warehouse.
• Add or remove Amazon FBA storage countries.

⚠️ Important

If your storage information is inaccurate or incomplete, OSS returns may be rejected or delayed.

The tax authority may also request clarification or carry out compliance checks.

3️⃣ How to update your storage information

Step 1 – Notify hellotax

Provide:

• Warehouse address
• Country
• Storage start date
• Provider name

Step 2 – Update submitted

hellotax will prepare and submit the required amendment to the Slovak tax authority.

Step 3 – Confirmation

We'll confirm once the amendment has been officially processed.

4️⃣ Why timely updates are essential

Keeping warehouse information current helps:

✅ Ensure OSS returns are accepted.

✅ Avoid delays and compliance issues.

✅ Maintain accurate VAT reporting as your business grows.

This also applies where Amazon Pan-European FBA automatically stores stock in additional EU countries.

5️⃣ Summary Table

💡 Final Tip

If you use Amazon FBA or Pan-European FBA, review your Seller Central inventory reports every month and notify hellotax immediately if new storage countries are added.