- If an advance payment is received before registering as a VAT payer, the transaction is not subject to VAT. However, when the goods are later used in regular business activities, VAT must be calculated separately. The obligation to charge VAT arises at the moment of payment receipt or actual delivery of goods/services, whichever occurs first. Only registered VAT payers can issue tax invoices, which allow buyers to include VAT in their tax credit. If goods/services are used in non-taxable activities, the entrepreneur must calculate tax liabilities and issue a consolidated tax invoice by the end of the reporting period. If an advance is received before VAT registration and goods are purchased with VAT after registration, VAT must be accounted for when the goods are used in business activities.
Source: news.dtkt.ua
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.