Summary

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

This information allows the Czech 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 (new, removed or relocated warehouse):

You must inform hellotax immediately with:

• New warehouse address and country
• Start date of storage
• Provider name (e.g. Amazon or your 3PL provider)

hellotax will submit the required update to the Financial Administration of the Czech Republic.

⚠️ If you don't update

Your quarterly OSS filing may be delayed or rejected, and the tax authority may request further clarification or carry out compliance checks.

💡 Tip

If you use Amazon FBA or Pan-European FBA, review your Amazon Seller Central inventory reports every month. Storage countries can change automatically without notice.

Always notify hellotax as soon as new storage countries appear.

Get the facts!

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

This information helps determine where taxable transactions occur and ensures your VAT and OSS reporting remains accurate.

1️⃣ Why warehouse information is required

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

• The full addresses of all warehouses or fulfilment centres where your goods are stored.
• Confirmation of whether goods are stored in the Czech Republic or other EU Member States.
• Details of third-party fulfilment providers such as Amazon FBA or other 3PL warehouses.

Providing accurate storage information helps ensure your business activities align with your VAT and OSS obligations.

If warehouse information is incomplete or incorrect, your OSS registration or future filings may be delayed.

2️⃣ What happens if you change or add storage locations

Once your OSS registration is active, your storage information must remain up to date.

You must notify the Czech tax authorities whenever you:

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

⚠️ Important

If your OSS registration no longer reflects your actual storage locations, your quarterly OSS return may be rejected.

Outdated information may also result in requests for clarification or compliance reviews.

3️⃣ How to update your storage information

Step 1 – Notify hellotax immediately

Provide:

• New warehouse or fulfilment centre address
• Country
• Date storage started (or will start)
• Provider name (Amazon, 3PL, etc.)

Step 2 – Update submitted to the Czech tax authorities

hellotax will prepare and submit the required amendment on your behalf.

Step 3 – Confirmation

Once processed, we'll confirm that the update has been recorded by the Czech tax authority.

4️⃣ Why timely updates are essential

Keeping your OSS registration accurate helps:

✅ Ensure your OSS returns are processed without delays.

✅ Reduce the risk of rejected filings or compliance issues.

✅ Support expansion into additional EU marketplaces.

Even temporary storage through Amazon Pan-European FBA should be reported where required.

5️⃣ Summary Table

💡 Final Tip

If you use Amazon FBA or Pan-European FBA, review your Seller Central inventory reports regularly and notify hellotax whenever new storage countries appear.