Concessional TDS on interest from long-term bonds reduces withholding for eligible non-resident lenders under specified conditions. Section 194LC mandates withholding on interest paid by Indian companies or business trusts to non resident persons and foreign companies on approved long term loans and bonds. Tax must be deducted at the earlier of credit or payment. Concessional withholding applies where interest does not exceed the Central Government approved rate, with specific reduced rates for rupee denominated bonds and bonds listed in an International Financial Services Centre. The enhanced withholding for failure to furnish PAN does not apply to this provision, and Rule 37BC allows a documentary alternative for certain non corporate non residents and foreign companies.