Official Letter No. 2398/CT-CS dated April 15, 2026, issued by the Tax Department on VAT policy provides as follows:
by KMC Consulting Company Limited
For deferred or installment payments for goods or services with a value of VND 5 million or more, in cases where, by the payment due date as stipulated in the contract or contract appendix, the business establishment does not possess non-cash payment documents, it must declare and adjust to reduce the amount of input VAT eligible for credit corresponding to the value of goods or services without non-cash payment documents in the tax period in which the payment obligation arises under the contract or contract appendix.
In cases where, after having declared and adjusted the reduction of input VAT credit, the enterprise subsequently obtains valid non-cash payment documents, it may declare and claim input VAT credit for the value of goods or services supported by such non-cash payment documents in accordance with regulations.
