Please help on taxing of liquid funds

I have a file which has a income well below 1 Lakh. There is a accumulated interest of 30000Rs. I have not redeemed it yet. I want to know if i redeem it now before march ending, will i be taxed under STCG? It looks to me like a nil tax since its still below stipulated 2.5L income tax limit. If i don’t redeem it, how will the accumulated interest be treated?

Thank you