Short answer. The U.S. savings and loan (S&L) crisis was the failure of 1,043 thrift institutions between 1986 and 1995. The federal cleanup, conducted by the Resolution Trust Corporation, ultimately cost taxpayers approximately $124 billion.
The S&L crisis was the largest U.S. financial-institution failure event between the Great Depression and the 2008 financial crisis. It permanently reshaped U.S. mortgage finance.
The structural cause
S&Ls had funded long-duration fixed-rate mortgages with short-duration deposits under Regulation Q deposit-rate caps. When market interest rates rose sharply in 1979-82 (peaking at 19% federal funds), S&Ls faced a fatal duration mismatch: their mortgage assets earned 6-9% (originated in the 1960s-70s), while their deposits had to pay rising market rates.
The deregulation that made it worse
The Garn-St. Germain Depository Institutions Act of 1982 deregulated S&Ls broadly — allowing investment in commercial real estate, junk bonds, and high-risk assets in a desperate attempt to grow out of the underwater fixed-rate mortgage portfolios. The strategy proved catastrophic: by 1985-86, regional banking failures (Maryland's Old Court, Ohio's Home State) became publicly visible.
The cleanup
The Financial Institutions Reform, Recovery, and Enforcement Act (FIRREA) of August 1989 abolished the Federal Savings and Loan Insurance Corporation, transferred S&L deposit insurance to the FDIC, and created the Resolution Trust Corporation. The RTC ultimately resolved 747 thrifts and disposed of $402B in failed-thrift assets — much of it commercial real estate.
The lasting effect
The S&L crisis effectively ended the deposit-funded mortgage system that had dominated post-war American housing finance. Securitization through Fannie Mae, Freddie Mac, and Ginnie Mae replaced thrift portfolios as the dominant funding source — a system that would scale through the 1990s-2000s and ultimately fuel the subprime crisis of 2008.
Sources
U.S. Census Bureau Survey of Construction; National Association of Realtors Existing Home Sales report; Freddie Mac Primary Mortgage Market Survey; National Bureau of Economic Research Business Cycle Dating Committee.