Every night, if your balance crosses ₹10,000, flex automatically moves your money into a 3-month FD earning 6% p.a. The amount is rounded down to the nearest ₹100.
For example, if you have ₹42,367, ₹42,300 moves into an FD and ₹67 stays in your current account. If you spend ₹15,000 the next day, flex automatically uses ₹67 from your current account and ₹14,933 from your FD. You simply make the payment as usual.