Highlights:• Composite multiferroic (1-x) Ba0.95Ca0.05Ti0.89Sn0.11O3 -(x) CoFe2O4 ceramics were prepared by mechanical mixing method;• Ferroelectric and ferromagnetic hysteresis loops indicate the multiferroic behavior of composites at room temperature;• 0.7 BCTSn-0.3 CFO composition shows a maximum magnetoelectric.