When you start selling across borders within the EU, you’ll need to be mindful of vat registration requirements. Generally, you’re required to register for VAT in each country where your sales surpass the local threshold. However, if you expect your sales to exceed these thresholds from the start, it might be wise to consider vat registration even before you hit those limits. There’s also the One Stop Shop (OSS) scheme that can simplify things by allowing you to report and pay VAT for all your EU sales through a single registration in one country. But remember, this only applies to B2C sales and not to B2B. If you do business with other businesses in different countries, you might still need to register in multiple countries.