Portugal's Assistant Secretary of State and Tax Affairs has issued Order No. 72/2021-XXII of 10 March 2021, which extends the relaxed e-invoice requirements previously provided as part of Order No. 437/2020-XXII of 9 November 2020. Under Order No. 437/2020-XXII, it was provided that PDF invoices will continue to be accepted and will be considered electronic invoices for all purposes under tax legislation until 31 March 2021. Under Order No. 72/2021-XXII of 10 March 2021, this acceptance of P…