As you have asked about the clerk salary in Union Bank of India, I am giving you some information about it, check below for the details

Clerk Salary Structure

Basic 8000
HRA 800 (10 % Of DA)
DA 8000
Total 17225
Pf -1722
Tax -20
Union Fee -40
Benefit Fund -250

Banking sectors will offers a Basic Pay of 8000, Dearness Allowance 8000, and House Rent Allowance 800 for the entry level bank clerk. The total salary for a clerk is approximately Rs. 17225 per month.

After completion of 1 year tune-up, BS will get 1 increment of Rs. 400/-
As you get total 3 increment by the end of one year service, 2nd year increment will be 500 for next 3 years.

DA is adjusting for every 3 months. (Feb, Mar, Apr) (May, June, July) (Aug, Sep, Oct) (Nov, Dec, Jan).
These are the quarters in which the DA will be changed according to the consumer price index.

House Rent Allowance (HRA):

It is given according to the place of posting.
If you are running in metro cities HRA is 8.50%, some cities with population more than 5 lakh, it is 7.50% of Basic Pay.