Economics of Public Borrowing
 
Public debt is the total financial obligation resulting from a government borrowing money to bridge the fiscal gap between its total expenditures and revenue collections. When tax and non-tax revenues are insufficient to fund public goods and infrastructure, governments look to domestic and international capital markets. Sovereign debt serves as a vital macroeconomic tool for financing long-term development, managing economic shocks, and smoothing public spending across generations.
Categorizing Public Debt Streams
Sovereign borrowing is divided into distinct operational and legal categories:
  • Domestic Debt: Funds borrowed within the country, denominated in the local currency. This includes issuing short-term Treasury Bills and long-term Treasury Bonds to local commercial banks, insurance companies, and retail investors.
  • External Debt: Capital raised from foreign creditors, typically denominated in foreign currencies (such as USD or Euros). This introduces currency risk, where local currency depreciation automatically inflates the debt burden.
  • Concessional vs. Commercial Debt: Concessional loans feature low interest rates and long grace periods, usually sourced from multilateral lenders (like the World Bank or African Development Bank). Commercial debt is market-driven, featuring higher interest rates and stricter repayment timelines (such as Eurobonds).

Statutory Frameworks and Parliamentary Debt Ceilings
 
The executive cannot borrow money arbitrarily. The legal authority to borrow is anchored in the constitution and governed by legislation like the Public Finance Management (PFM) Act. Parliament sets a legally binding Debt Ceiling—expressed as an absolute monetary cap or a percentage of GDP—that the executive branch cannot breach without legislative approval.
 
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