Contents -- I. Introduction -- II. Implication of Remittances for Public Debt Sustainability -- III. An Application: Lebanon -- A. Stabilizing the Debt at Current Levels -- B. Targeting a Lower Debt Level -- IV. Conclusion -- I. Traditional Model of Debt Sustainability -- A. The law of motion of the government debt-to-GDP ratio -- B. The primary surplus-to-GDP ratio that stabilizes the debt-to-GDP ratio -- C. The primary surplus-to-GDP ratio that reduces debt-to-GDP to a given target -- II. Debt Sustainability in the Presence of Remittances -- A. The law of motion of the government debt-to-GDP plus remittances ratio -- B. The primary surplus-to-GDP ratio that stabilizes debt-to-GDP plus remittances -- C. The primary surplus-to-GDP ratio that reduces debt-to-GDP plus remittances to a given target -- Tables -- 1. Debt Dynamics and Primary Surpluses that Stabilize the Debt Ratio for Lebanon -- 2. Primary Surplus Required to Reduce the Debt Ratio to a Given Target -- Figures -- 1. Lebanon: Debt Dynamics -- 2. Lebanon: Primary Surpluses that Stabilize the Debt Ratio -- References.