The Federal Reserve Board published a FEDS Note summarising staff research on automated credit card limit decisions, using regulatory data to assess how often limits are increased, which consumers are targeted, and how borrowing responds. The analysis finds that limit increases are common, are predominantly initiated by banks rather than requested by consumers, and are associated with higher revolving balances after the increase. Using Federal Reserve Y-14M data covering more than 70 percent of the US credit card market, the note estimates that around 12 percent of credit cards receive limit increases annually, amounting to roughly USD 160 billion in additional available credit each year, with about 80 percent of increases initiated by banks. Patterns are consistent with “low-and-grow” strategies, including rapid limit growth for subprime borrowers from about USD 700 at origination to about USD 2,700 after five years, compared with superprime borrowers’ limits rising from about USD 12,000 to about USD 15,000. Bank-initiated increases are more likely for revolving borrowers than for transactors, with nearly 4 percent of revolvers receiving a bank-initiated increase each quarter versus about 2 percent of transactors, and the highest likelihood occurring for borrowers revolving 30 to 70 percent of their limit; after a limit increase, utilization falls initially but returns to prior levels within about six months, implying revolving balances rise by about 30 percent of the increase. The note also discusses policy approaches abroad and model-based welfare implications, citing the UK’s prohibition on limit increases for borrowers in persistent revolving debt, Canada’s requirement for explicit consumer consent for limit increases, and similar EU consent requirements expected to apply across member states in 2026. Under the paper’s assumptions, restricting bank-initiated increases for consumers in persistent revolving debt for more than 12 months produces positive net welfare effects by reducing debt accumulation among consumers with self-control problems, with similar results for a consent-based regime.