If done before the maturity date you set, there's a pre-closure fee. It's 1% of the interest rate. 

To close and withdraw the cash in a Fixed Deposit, go to the Fixed Deposit Page: 

• Tap on the Fixed Deposit you want to close. 
• Tap on Settings, and select Close Fixed Deposit (on the top right). 

Pro-Tip: If you want to avoid paying a pre-closure fee: 

• Open a Fixed Deposit – between ₹1,000 and ₹15 lakh – for less than 15 days. This way, you can avoid the pre-closure fee even if you close before the maturity date.