EXHIBIT 12.1 PACCAR Financial Corp. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES PURSUANT TO SEC REPORTING REQUIREMENTS (Thousands of Dollars) Three Months Ended March 31 1995 1994 - -------------------------------------------------------------------------------- FIXED CHARGES Interest expense $20,299 $12,981 Portion of rentals deemed interest 63 56 - -------------------------------------------------------------------------------- TOTAL FIXED CHARGES $20,362 $13,037 - -------------------------------------------------------------------------------- EARNINGS Income before taxes $10,319 $ 9,294 Fixed charges 20,362 13,037 - -------------------------------------------------------------------------------- EARNINGS AS DEFINED $30,681 $22,331 - -------------------------------------------------------------------------------- RATIO OF EARNINGS TO FIXED CHARGES 1.51X 1.71X - -------------------------------------------------------------------------------- The method of computing the ratio of earnings to fixed charges shown above complies with SEC reporting requirements but differs from the method called for in the Support Agreement between the Company and PACCAR Inc. See Exhibit 12.2.