Shipping & Pick up
I’m a non-EU professional seller. How do I use Catawiki’s IOSS (Tax ID) number?

You’re required to share Catawiki’s IOSS (Import Tax ID) number with the shipping company for applicable orders going to the EU. You can see if it applies and the IOSS number itself in the order details. Check with your shipping company the exact way you need to share the IOSS number. 

Professional sellers shipping from outside of the EU need to share our IOSS (Import Tax ID) number when shipping orders up to €150 to the EU. You can see both the orders this applies to and the IOSS number itself in the order details. For these orders, we use the IOSS (Import One-Stop Shop) to collect, declare, and pay the VAT to the relevant tax authorities. 

This is required to avoid shipping issues related to import rules. If you don’t share our IOSS number:

  • A buyer can be charged VAT twice: by us at checkout and again by the shipping company when the order is delivered. 
  • Some shipping companies won’t accept packages without an IOSS number for exports up to €150, which can delay shipping.

Both of these can lead to negative buyer feedback, having to compensate for additional costs, or restrictions on your account.

Check with your shipping company where exactly you need to share our IOSS number. It could be via a customs form, invoice, or somewhere else. The IOSS number might also be referred to as the Tax ID or VAT reg. number. 


Using Catawiki’s Singapore GST number

Our Singapore GST number is a tax number needed for certain orders to make sure VAT isn’t charged twice.

 We’ll add it to the order page when you need to use it. 

 Your order needs the GST number if:

  • You’re a pro seller.
  • The buyer is in Singapore.
  • The final bid is S$400 or less.

Make sure to ask your shipping company how to add it before shipping the order.


Using Catawiki’s French VAT or IOSS number

Every order going to France or Monaco must include Catawiki’s French VAT or IOSS number. You need to provide these numbers to comply with import rules and customs regulations.

  • For final bids less than or equal to €150, use the IOSS number. Ask your shipping company where to place it.
  • For final bids more than €150, use the VAT number. Place it in Box 44 - Additional information.

By providing these numbers, your buyers can pay VAT at our checkout. Catawiki will then pay it to the relevant tax authorities.


If you still need help, you can reach out to us below. Our customer support specialists will review your inquiry and get back to you.

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