Infra bonds prove to be a good way to save tax u/s 80 CCF.
Benefits: By investing in these bonds, you can get a deduction of Rs 20,000 over and above the Rs 1 lakh that is generally allowed. (u/s 80 CCF)
Returns: Most of these bonds provide with 9% annual interest. Offered in both cumulative and non-cumulative mode. (Source)
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80ccf infrastructure bonds 2012 on Investologic.com