A Football League report has stated that Huddersfield Town spent £32,500 on agents' fees in the second half of 2008.
The club had spent nothing on agents' fees in the same period the previous year.
Ten clubs in League One, including last Saturday's opponents Crewe, didn't pay any agents' fees.
Yorkshire neighbours Leeds United spent £346, 500 on agents fees, which made up nearly half the entire League's spending. The total amount spent by all clubs was £740,160.
The Football League stated: "The figures contained in the report includes sums comitted to club's agents directly, as well as any sums paid to players (in accordance with their contracts) to enable them to satisfy their liabilities to their agents. Such payments are regarded as taxable 'benefits in kind' to the player."
