The deadline for submission of the ordinary 730 form is 30/09/2025. This applies whether it is delivered to your tax withholding agent, CAF or a licensed professional. One can, of course, choose to deliver it directly on the website of the Internal Revenue Service.
The deadline for the submission of the Income PF (formerly UNICO) form is 31/10/2025 (telematic submission of the tax return through Model Income for VAT holders).