While waiting for the VAT tax reform, for 2023 invoices, the last chance of deduction lies in the 2024 VAT form. Then, the supplement in favor is only possible due to a mere error
For invoices received, but not registered, in 2023, still due last year, it is possible to deduct the relevant VAT only with the 2024 annual VAT form, relating to 2023, expiring on 30 April 2024, subject to annotation in 2024 in a “special section” of the “VAT register of purchases relating to all invoices received” in 2023. After 30 April, this VAT can only be recovered in a supplementary VAT declaration in favor, provided that its failure to deduct derives from a “mere error” and not from an “arbitrary” delay in receiving and/or noting the purchase invoice. These are the principles contained in the Revenue responses of 26 September 2023, n. 435, and of 18 December 2023, n. 479.