From 1.1.2024, businesses must submit income and expenses to the myDATA platform, and this data must match the VAT returns. No modifications to the pre-filled VAT amounts will be allowed. The pre-filling of VAT returns is now mandatory for businesses subject to myDATA obligations. Income and expenses in the VAT return must not be less or exceed those reported to myDATA. Input tax deductions are not allowed on documents not reported to myDATA. Decision 1020/2024 of the Ministry of Finance specifies the details of this obligation. There is a possibility to modify pre-filled amounts up to 30% under certain circumstances, but this percentage may be reduced to zero in the future.
Source Sovos
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