This document analyzes debt sustainability in Pakistan. It defines debt sustainability as a country's ability to meet current and future debt obligations without defaulting or compromising economic growth. The methodology examines both budget accounting and present value approaches. Sustainable debt thresholds are presented from various institutions, with thresholds ranging from 150-200% of exports to 180-220% of GDP. The analysis then models Pakistan's debt at 60% of GDP under varying budget balance and growth rate assumptions, finding the debt would increase by 2-4.26 times by 2025 depending on the scenario. It concludes gradual debt reduction through retirement provides better fiscal space and growth opportunities than immediate retirement.