Per the latest U.S. Mint report, it costs less than six cents to make a dime ($0.0576). To make a quarter, it costs about 15 cents ($0.1468), and nearly 34 cents for a half-dollar ($0.3397).

2-Year U.S. Treasury Note Continuous Contract $103.328 0.023 0.02% 5-Year U.S. Treasury Note Continuous Contract $107.727 0.188 0.17% 10-Year U.S. Treasury Note Continuous Contract $110.141 0.313 ...