HRA calculated on the basis of HRA received
In your case from both company
Sec 10(13A)

1.actual HRA received
2.actual rent paid - 10% of salary
3. 40% or 50% of salary

Least of above is exempted
Taxable = actual HRA received - exempted

Here 50% in case metro city
Metro city are mumbai, chennai, calcutta, delhi

Salary = basic salary +DA +commission

Note : if employee is living in his own house or not paying rent then entire HRA will be taxable

this is ok & thank you sir.. but my question is whether can we compute & get HRA exemption in both? or can we take in proprotionarely?