T+1 Settlement
T+1 Settlement means that securities transactions must be fully settled — with securities delivered to the buyer and cash delivered to the seller — within one business day after the trade date, a standard the United States adopted in May 2024 after transitioning from a T+2 cycle.
Settlement cycles in US equities have steadily compressed over decades as technology reduced the time needed to transfer ownership records and process payment. The industry operated on T+5 (five business days after trade date) into the 1990s, moved to T+3 in 1995, shortened to T+2 in 2017, and completed the move to T+1 in May 2024 — when the SEC rule mandating the accelerated cycle took effect for equities, ETFs, and corporate bonds.
The transition to T+1 was motivated primarily by risk reduction. Every day between trade execution and final settlement represents a period during which either party could default, the security's price could move dramatically, or operational errors could create uncertainty. The GameStop episode in 2021 highlighted these risks: NSCC margin calls, driven by the risk of unsettled trades in volatile stocks, were large enough to force retail broker-dealers to restrict trading. A shorter settlement cycle reduces the open exposure period and the associated margin requirements.
For individual investors, T+1 settlement has practical implications for cash management. Under T+2, investors selling securities had two days before the proceeds were available for reinvestment or withdrawal. Under T+1, that period is compressed to one business day. Investors who sell shares on Monday can reinvest the proceeds on Tuesday rather than Wednesday. This acceleration is particularly meaningful for dividend income and rebalancing workflows.
For institutional investors and international market participants, T+1 presented operational challenges. Foreign investors trading US securities often need to convert foreign currency to dollars to fund purchases — a process that typically requires overnight time to settle in currency markets. Compressing the US equity settlement cycle to one day means foreign investors may have as little as a few hours to arrange funding once a trade executes during US market hours, increasing operational demands on global custodians and prime brokers.
The longer-term regulatory trajectory points toward potential T+0 (same-day) or even real-time settlement using distributed ledger or blockchain infrastructure. Industry working groups and regulators have studied this possibility, though it would require substantial changes to market microstructure, netting practices, and financing arrangements that currently rely on overnight float.