Change the method by stamp to input tax invoice for tax invoice which was claimed as input tax in the different period from the tax invoice date according to announcement Revenue Department about VAT (No.4), article 2 requires "Claimed as input tax of MM/YYY" into input tax invoice for tax invoice did not apply to deductions in the calculation for submission VAT on a tax month due to majeure for tax invoice. However to be entitled to deduct in the calculation of tax o which was claimed however input tax invoice must not exceed six months since the month after the month that the tax invoice.