Financial planners believe the forthcoming issue of L and T NCD which opens on December 16, 2019 could be a good buy for investors especially retirees and those in the low tax bracket. The non-convertible debentures offer interest rates as high as 8.65% to retail investors and come with tenures of 3, 5 and 7 years. As compared to this a fixed deposit from State Bank of India, offers a maximum of 6.25%, thereby giving investors a lucrative spread.