Enter basic salary, HRA received, and rent paid — the exemption is the minimum of the three statutory tests, computed live.
The exempt portion is the minimum of three amounts: (1) actual HRA received, (2) rent paid minus 10% of basic salary + DA, and (3) 50% of basic + DA in a metro city (Delhi, Mumbai, Kolkata, Chennai) or 40% elsewhere. Whatever HRA remains above the exemption is taxable as salary.
No — HRA exemption is available only under the old regime. If you claim significant HRA, that's often a major factor in whether the old regime beats the new one for you; compare both in the Tax calculator.
Employers typically require rent receipts to process HRA exemption in payroll, and the landlord's PAN is mandatory when annual rent exceeds ₹1,00,000. Paying rent to a parent is legal if actually paid and declared in their income.
Yes, in genuine cases — for example, owning a home in one city (claiming home loan interest under Section 24) while renting in another city for work (claiming HRA). Both on the same property in the same city generally doesn't hold up.
Worked example: Basic+DA ₹6,00,000, HRA received ₹2,40,000, rent ₹3,00,000, metro: the three tests give ₹2,40,000 / ₹2,40,000 (3,00,000 − 60,000) / ₹3,00,000 — minimum is ₹2,40,000, so the entire HRA is exempt and taxable HRA is zero.