Debt Sustainability & Grants  The objective of grants in IDA15
is to help low-income countries to restore or maintain their
external debt sustainability. The grant allocation framework
first introduced in IDA14 has only one criterion for grant
eligibility: countries' risk of debt distress. The risk ratings
emerge from country-specific forward-looking debt sustainability
analyses based on the joint IMF-World Bank Debt Sustainability
Framework (DSF) for low-income countries.  The IDA grant
framework then translate these debt distress risk ratings into
"traffic lights", which in turn determine the share of IDA
grants and highly concessional IDA credits for each country:
high risk or in debt distress ("red" light) is associated with
100 percent grants, medium risk ("yellow" light) with 50 percent
grants and 50 percent credits, while low risk ("green" light) is
associated with 100 percent credits and zero grants.  The
framework limits the scope of grant eligibility only to IDA-only
countries, i.e., excludes IBRD/I