Stone matrix asphalt (SMA) is favoured for its durability and better performance relative to conventional paving mixtures, for high-traffic areas. This study explores the application of waste toner (WT), a waste obtained from laser printer and copiers. In this study, the WT was initially mixed with a virgin binder through wet process before being blended with aggregate gradation to produce SMA mixtures. The blending dosage of WT was varied between 0% and 16% at an increment of 4% by weight of mix. Various mechanical characterization tests on WT-SMA mixtures were conducted in the laboratory. Results demonstrated that waste toner significantly enhances SMA properties. Marshall stability values peaked at 1759.9 kg at 12% WT dosage, compared to 1493.4 kg of the control mix. Indirect tensile strength (ITS) test showed the highest tensile strength ratio at 12% WT concentration, indicating improved moisture resistance. Ultrasonic pulse velocity measurements revealed an increase in elastic modulus from 13.3 GPa in the control to 17.6 GPa with 16% toner. Dynamic modulus values improved as well, with the 16% toner mix reaching 37.67 GPa, up from 28.4 GPa in the control. Rapid rutting resistance was also enhanced with the WT modified binder with peak values for 12% WT up to 166.95 kN/m2 from 159.87 kN/m2 for conventional mixes. The fatigue life ranged from 7435 to 8119 cycles, with higher toner concentrations correlating with better fatigue performance. The Fourier transform infrared spectroscopy (FTIR) analysis reveals that incorporating WT into bitumen introduces new functional groups and alters existing ones, potentially boosting the performance attributes of the binder. These findings illustrate that WT can effectively enhance the mechanical properties of SMA mixture.