SBI recently advertised how the fixed deposits offered by SBI under Section 80C helps you save tax and the effective yield.
But this is pre tax return. The interest you get is taxable in case of above deposits. Since they have assumed tax bracket of 30%, your post tax yield would come to 14.15% (from 18.55%) for senior citizens and for others it would be 13.7% (from 17.77%).
So be careful when you are tempted with such advertisements 🙂
You can check Best 80C Tax savings 5 years Fixed Deposit Interest Rates here.