What is Debt Service Coverage Ratio?

Legal Definition
The debt service coverage ratio (DSCR), also known as "debt coverage ratio" (DCR), is the ratio of cash available for debt servicing to interest, principal and lease payments. It is a popular benchmark used in the measurement of an entity's (person or corporation) ability to produce enough cash to cover its debt (including lease) payments. The higher this ratio is, the easier it is to obtain a loan. The phrase is also used in commercial banking and may be expressed as a minimum ratio that is acceptable to a lender; it may be a loan condition. Breaching a DSCR covenant can, in some circumstances, be an act of default.
-- Wikipedia
Legal Definition
The cash flow needed to pay debt. It can be a requirement that the government needs to make its payments to the country debt.