You have declared the investment as your income from the year of investment say 2015-16. So it is your asset earned during that year. If you have not invested in Taxsaver FD, it would have been taxed for that year. Inthat case will you be paying tax for the same"earnings" next year? The same holds good in your case. You will pay tax only for the interest. The bank will deduct TDS @ 10% if the interest exceeds 10000/- per year even for Taxsaver FDs. Hope this helps