Data / Bank failures / 1986 / Guaranty Federal Bank FSB
Guaranty Federal Bank FSB, Casper, WY: failed December 12, 1986
Guaranty Federal Bank FSB in Casper, Wyoming, failed on December 12, 1986. It held $63.8 million in assets and $73.5 million in deposits at its last report. The FDIC estimates the cost to its insurance fund at $18.9 million (29.6% of its assets). By assets it was the 66th largest of 204 banks closed or assisted in 1986.
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The FDIC's record
- Closed
- December 12, 1986
- Type
- Failure
- How it was resolved
- Insured deposit transfer: the insured deposits moved to another bank
- Total assets
- $63,780,000
- Total deposits
- $73,471,000
- Estimated cost to the FDIC
- $18,867,540 (estimate as of July 31, 2026)
- Charter
- Savings bank
- Insurance fund
- FSLIC
- FDIC certificate
- 29648
Other bank failures in Wyoming, 1984 to 1988
| Bank | City | Closed | Assets | Deposits | Estimated cost | Acquirer |
|---|---|---|---|---|---|---|
| United SB of Wyoming (assistance) | Cheynne | December 16, 1988 | $220.5 million | $275.5 million | $120.6 million | Rocky Mountain FS&LA |
| Rocky Mountain FS&LA (assistance) | Cheynne | December 16, 1988 | $307.2 million | $268.1 million | $102.6 million | Rocky Mountain FSB |
| Bank of Casper | Casper | January 22, 1988 | $6.1 million | $5.8 million | $1.1 million | First Wyoming Bank Caspe |
| First State Bank at Shoshoni | Shoshoni | December 18, 1987 | $4.6 million | $4.1 million | $1.1 million | First STB of Thermopolis |
| American National Bank of Afton | Afton | October 15, 1987 | $11.4 million | $11.2 million | $2.2 million | Star Valley State Bank |
| Stockmen's Bank & Trust Company | Gillette | September 18, 1987 | $117.4 million | $111.9 million | $41.1 million | First Interstate BK Gill |
| American National Bank of Evanston | Evanston | August 20, 1987 | $9.1 million | $8.9 million | $4 million | Pioneer Bank of Evanston |
| Valley State Bank | Baggs | October 17, 1986 | $5 million | $4.6 million | $718,276 |
All bank failures in 1986 · All bank failures in Wyoming · The full failed bank list
Read from the FDIC's failures data (BankFind), last updated 2026-10-23. Assets and deposits are as of the last report before failure; the estimated cost is the FDIC's latest estimate of the loss to its insurance fund and changes as the receivership winds down. Free to reuse with credit to SpecStream under CC BY 4.0.