This paper investigates the drivers of public debt surges in 172 countries from 1980 to 2021, focusing on stock-flow adjustments (SFA)—discrepancies between annual debt changes and budget deficits. Using survival analysis methods, we find that a one percentage point increase in the SFA to GDP ratio raises the hazard rate of a debt surge by 16%, with stronger effects in advanced economies (28%) compared to emerging markets (15%). Conditional on an increasing debt trend, higher SFA significantly increase the probability of a debt spike materializing […]