How do i convince my customer that investing in my banks fixed deposit is the best option when we are offering .5% less interest ?

In my opinion.. the bank should grant his customer with confidence and flexibility before money.. the common sentence between all main customers is that "I trust those people and feel relax "

Return is the payment for risk.

If the interest rate is below of other products and/or competitors then you must explain to the customer that:

1. deposits have less risk than other products, hence pay less return

2. your bank is less exposed to market contingencies and risks and that is why it pays less