Got deposit for flat instead of monthly rent

It will not make much difference. It will be treated as rent and chargeable to tax under income from house property. The lumpsum may be apportioned to the relevant period from 1st april to 31st march, and the rest will be advance received and treated as an unearned income.

Wait for more replies.

For more clarification you can also refer

https://taxation.lawyers.com/property-tax/advance-rental-income-security-deposits-and-taxes.H T M L