Total household debt in the US expanded by $334 billion from the prior quarter to $19.1 trillion in Q3 2026, the highest on record. Mortgage balances rose by $257 billion to $13.4 trillion, and home equity lines of credit (HELOC) balances rose by $23 billion to $481 billion, the largest increase since 2005. Credit card balances rose by $22 billion to $1.29 trillion, and auto loan balances increased by $21 billion to $1.73 trillion. Student loan balances edged up by $5 billion to $1.66 trillion. “Household debt levels rose moderately, led by increases in mortgage and home equity line of credit originations” said Donghoon Lee, Economic Research Advisor at the New York Fed. “Although delinquency transition rates for housing debts have crept up, the overall credit quality of these loans remains strong.”