In March 2001, the Judicial Conference of the United States decided that no fee would be owed until a user accrued more than $10 worth of charges in a calendar year. If an account does not accrue $10 worth of usage between January 1 and December 31 of a year, the amount owed would be zeroed. In March 2010, that limit was effectively quadrupled, with users not billed unless their charges exceed $10 in a quarterly billing period. Beginning in 2012, the limit was $15 per quarter.