The Belgium VAT office has issued a guidelines regarding VAT treatment for the issuance of invoices before providing taxable supply of goods and services. The existing rules which will be expired at the end of 2014 covering the Belgian advance invoices have been replaced by the new guidelines.
As per the new rules, it will not have any tax effect if the invoice issues do not take place before 7 days from the supply of taxable goods and services. Supplier can have an option to choose either the VAT invoice issue date or the date of taxable supply if the invoice is issued earlier. Customer can then deduct the input but this is dependent on the taxable supply being provided within 90 days of the invoice date otherwise the deducted VAT need to be reserved.