<p>If you operate in multiple EU countries, you should consider using the One Stop Shop (OSS) system. It allows you to register in one country and pay VAT for cross-border sales in other EU countries through a single tax authority. However, you should note that there are specific rules and exceptions depending on whether you sell physical goods or digital services. You should also be aware of the distance-selling rules, which require you to comply with country-specific thresholds (e.g., €10,000) for mandatory registration in each individual country. For more details, check out the article VAT registration for small businesses It provides recommendations for businesses operating across multiple markets.</p>