1. Deadline
Registration must be done within 30 days of signing (or of the start date, if earlier).
2. RLI form
You use the Revenue Agency's RLI form, online via the telematic services or at an office/tax centre.
3. Who pays
Registration tax and stamp duty are usually shared equally between the parties, unless the flat-tax (cedolare secca) option is chosen, which exempts from registration tax and stamp duty.
4. What you need
Details of the parties, the property's cadastral details, a copy of the signed contract and the references to pay the taxes.
5. After registration
Keep the registration receipt: it's proof the contract is in order. Registration is usually the landlord's responsibility.
Informational material by casaperstudenti.it: it is not legal advice. For your specific case, consult a qualified professional.