I don't know about the modalities in all the EU countries, but generally it's an indirect reimbursement, deducting the VAT you payed extra from the VAT you're s

I don't know about the modalities in all the EU countries, but generally it's an indirect reimbursement, deducting the VAT you payed extra from the VAT you're supposed to hand over to the tax authorities. The readjustments are done monthly.