Traders assign a 98% implied probability against a U.S. default by 2027 because the debt limit was raised by $5 trillion in July 2025 to $41.1 trillion, leaving substantial headroom into mid-to-late 2027 before the Treasury would exhaust borrowing authority and extraordinary measures. Congress has repeatedly suspended or increased the ceiling ahead of any X-date in recent cycles, reflecting bipartisan recognition of the severe market disruption, higher borrowing costs, and global instability that would follow a missed Treasury payment on notes, bonds, or bills. With debt subject to the limit now near $40 trillion, scheduled fiscal debates and routine legislative action are expected to maintain payment continuity through the resolution window. A prolonged impasse extending beyond available cash reserves and accounting maneuvers remains the primary scenario that could still shift outcomes.