EXHIBIT 11.1 STATEMENT RE: COMPUTATION OF EARNINGS (LOSS) PER SHARE USA TRUCK, INC. - -------------------------------------------------------------------------------- <Table> <Caption> Three Months Ended Six Months Ended June 30, June 30, --------------------------------- --------------------------------- 2002 2001 2002 2001 Numerator: Net income (loss) $ 730,149 $ 278,557 $ 804,002 $ (126,352) =============== =============== =============== =============== Denominator: Denominator for basic earnings per share- Weighted average shares 9,313,158 9,240,270 9,292,138 9,235,174 Effect of dilutive securities - Employee stock options 50,104 26,256 50,104 -- --------------- --------------- --------------- --------------- Denominator for diluted earnings per share- Adjusted weighted average and assumed conversions 9,363,262 9,266,526 9,342,242 9,235,174(1) =============== =============== =============== =============== Basic earnings (loss) per share $ .08 $ .03 $ .09 $ (.01) =============== =============== =============== =============== Diluted earnings (loss) per share $ .08 $ .03 $ .09 $ (.01) =============== =============== =============== =============== </Table> (1) The effect of all potential common shares is anti-dilutive in the calculation of diluted loss per share and, therefore, has been excluded from the calculation. 19