Indicators of External Debt Sustainability

There are various indicators for determining a sustainable level of external debt. While each has its own advantage and peculiarity to deal with particular situations, there is no unanimous opinion amongst economists as to one sole indicator. These indicators are primarily in the nature of ratios i.e. comparison between two heads and the relation thereon and thus facilitate the policy makers in their external debt management exercise. These indicators can be thought of as measures of the country’s “solvency” in that they consider the stock of debt at certain time in relation to the country’s ability to generate resources to repay the outstanding balance.
Examples of debt burden indicators include the (a) debt to GDP ratio, (b) foreign debt to exports ratio, (c) government debt to current fiscal revenue ratio etc. This set of indicators also covers the structure of the outstanding debt including the (d) share of foreign debt, (e) short-term debt, and (f) concessional debt in the total debt stock.
A second set of indicators focuses on the short-term liquidity requirements of the country with respect to its debt service obligations. These indicators are not only useful early-warning signs of debt service problems, but also highlight the impact of the inter-temporal trade-offs arising from past borrowing decisions. Examples of liquidity monitoring indicators include the (a) debt service to GDP ratio, (b) foreign debt service to exports ratio, (c) government debt service to current fiscal revenue ratio etc. The final indicators are more forward looking as they point out how the debt burden will evolve over time, given the current stock of data and average interest rate. The dynamic ratios show how the debt burden ratios would change in the absence of repayments or new disbursements, indicating the stability of the debt burden. An example of a dynamic ratio is the ratio of the average interest rate on outstanding debt to the growth rate of nominal GDP.

Mortgage loan
A mortgage loan is a loan secured by real property through the use of a note which evidences the existence of the loan and the encumbrance of that realty through the granting of a mortgage which secures the loan. However, the word mortgage alone, in everyday usage, is most often used to mean mortgage loan.
A home buyer or builder can obtain financing (a loan) either to purchase or secure against the property from a financial institution, such as a bank, either directly or indirectly through intermediaries. Features of mortgage loans such as the size of the loan, maturity of the loan, interest rate, method of paying off the loan, and other characteristics can vary considerably.