If you have indefinite stay in Italy so after how long can apply for Italian passport?

The requirements for obtaining Italian citizenship through indefinite stay can vary depending on your individual circumstances. Here is a general overview of the process and timeline:

1. Residency Requirement: To be eligible for Italian citizenship through indefinite stay, you must have legally resided in Italy continuously for at least 10 years. This period of residency can include temporary permits, such as study or work visas, as long as there have been no significant interruptions or periods of absence from Italy.

2. Application: After meeting the residency requirement, you can apply for Italian citizenship by submitting an application to the Italian authorities. The specific application process may vary depending on the region or city where you reside, so it's important to check with your local Italian municipality (comune) or prefecture (prefettura) for detailed information.

3. Required Documents: The application for Italian citizenship typically requires a range of documents, including your valid passport, proof of your indefinite stay in Italy (such as residence permits), proof of income and financial stability, and any other relevant documents specified by the Italian authorities.

4. Language Proficiency: You may be required to demonstrate a basic level of Italian language proficiency, usually at the A2 level according to the Common European Framework of Reference for Languages (CEFR). This proficiency can be proven through language certificates or by passing a language test administered by the Italian authorities.

5. Processing Time: Once you have submitted your application and all the required documents, the processing time can vary depending on the workload of the relevant Italian authorities. It can take several months to a year or more for your application to be reviewed and decided upon.

6. Interview: In some cases, you may be called for an interview with the Italian authorities to further assess your knowledge of Italian language and culture and your integration into Italian society.

It's important to note that the information provided here is general in nature and may vary based on specific regulations and circumstances. To ensure accuracy and obtain the most up-to-date information, it is recommended to consult the official Italian government websites or contact the relevant Italian authorities directly.