Since you do not receive HRA due to the company lease and do not own any other residential property, you can claim the deduction under Section 80GG for the rent paid by you, which is Rs. 3,000 per month.
However, the deduction under Section 80GG is subject to certain conditions, such as:
The taxpayer must be an individual and must not receive HRA from their employer.
The taxpayer or their spouse or minor child should not own any residential property at the place where they are employed or conducting business.
The taxpayer must file a declaration in Form 10BA, stating that they have paid the rent for the accommodation and do not receive HRA from their employer.
The deduction under Section 80GG is limited to the least of the following amounts:
a. Rs. 5,000 per month
b. 25% of the total income of the taxpayer for the year
c. Actual rent paid less 10% of the total income of the taxpayer for the year