This paper is concerned with the ultimate load capacity of eccentrically loaded tapered concrete-filled steel composite (TCFSC) columns. Finite element software LUSAS is used to conduct the nonlinear analyses in order to predict the ultimate load capacity of the columns. Modelling verification is carried out by comparison of the results of the finite element with the existing experimental test which concludes that they correlate reasonably well with each other. Therefore, the proposed finite element modelling can accurately predict the behaviour of the columns herein. Nonlinear analyses are performed to evaluate the ultimate load capacity of the columns where the main variables are: (1) tapered angle (from 0° to 2.2°); (2) steel wall thickness (from 3 mm to 4 mm); (3) load eccentricity (15 mm and 30 mm). Effects of various tapered angles, different steel wall thicknesses, and load eccentricities on the ultimate load capacity of the columns are investigated. It is concluded from the study that these variables considerably affect the ultimate load capacity of the columns.