STCG+LTCG tax payment

For senior citizens, not having any business or professional income, there is no advance tax liability, he/she can pay the tax anytime on or before filing return u/s. 139(1), without paying any interest or penalty.

Senior citizens i.e., age 60 years or above are exempted from paying advance tax if they do not have any income from business or profession.

If "Already Realised" STCG + LTCG - You can pay tax while filing your tax return, without attracting interest or fine.

Thanks a lot, Sir. 

You are welcome.