Fe TM B( TM =Sn, W, Mo W) alloy deposits have been prepared successfully using electroless plating. The magnetic properties of as plated and heat treated alloy deposits have been studied using vibrating sample magnetometry (VSM). The saturation magnetization of the alloy deposits increases with increasing iron content and decreases with increasing annealing temperature. The coercivities of Fe Sn B and Fe W B alloy deposits decrease to a minimum at 14 9 at.% B and 9 3 at.% B, respectively, and increase continually with increasing annealing temperature for Fe Mo W B. It has been also found that the ratio of remanence to saturation of the alloy deposits is not larger than 0 37 for Fe Sn B and Fe W B, and 0 53 for Fe Mo W B, furthermore it does not increase much even after heat treatment.