As part of its Borrowing Outlook, the OECD estimates gross short– term government borrowing requirements. The article concludes that all methods for measuring short-term borrowing needs studied here – except one – provide either significantly underestimated or substantially overestimated measures. The article therefore suggests adopting the following measure: Gross Short-Term Marketable Borrowing Requirements is equal to Net Short-Term Borrowing Requirements plus the outstanding amount of the stock of short-term instruments. This new measure (referred to as Method 2 in the study) yields, in principle, meaningful estimates, comparable across different countries. JEL Classification: G15, G18, H63, H68. Keywords: measuring gross short-term borrowing requirements, debt