For decades, balance-of-payments (BOP) deficits have been a focal point for policymakers and economists. Recent events have rekindled interest in how these deficits should be quantified and when they might become problematic. The BOP serves as an accounting framework that monitors all economic transactions between individuals in the United States and those in other countries, utilizing a double-entry bookkeeping system. Similar to how businesses use double-entry bookkeeping to manage their finances, the BOP framework organizes international economic activities. In the BOP system, the balance of payments itself is an accounting identity that must always balance. Therefore, when discussing a BOP deficit, it does not pertain to the accounting identity as a whole but rather to a deficit within a specific subset of transactions. Determining a BOP deficit necessitates selecting the subset that is most relevant to the economic question being considered.
