A binder resin for an electrostatic image developing toner, obtained by polycondensation reaction of a polycarboxylic acid and a polyol, wherein the polycarboxylic acid comprises at least one of a compound represented by formula (1) and a compound represented by formula (2) in an amount of from 50 to 100 mol %, the polyol comprises a compound represented by formula (3) in an amount of from 50 to 100 mol %, and a content of a catalyst-originated metal element in the resin is 100 ppm or less: R.sup.1OOCA.sup.1.sub.mB.sup.1.sub.nA.sup.1.sub.lCOOR.sup.1' (1) (wherein A.sup.1 is a methylene group, B.sup.1 is an aromatic hydrocarbon group, R.sup.1 and R.sup.1' each is a hydrogen atom or a monovalent hydrocarbon group, 1.ltoreq.m+1.ltoreq.12, and 1.ltoreq.n.ltoreq.3); R.sup.2OOCA.sup.2.sub.pB.sup.2.sub.qA.sup.2.sub.rCOOR.sup.2' (2) (wherein A.sup.2 is a methylene group, B.sup.2 is an alicyclic hydrocarbon group, R.sup.2 and R.sup.2' each is a hydrogen atom or a monovalent hydrocarbon group, 0.ltoreq.p.ltoreq.6, 0.ltoreq.r.ltoreq.6, and 1.ltoreq.q.ltoreq.3); HOX.sub.hY.sub.jX.sub.kOH (3) (wherein X is an alkylene oxide group, Y is a bisphenol structure group, 1.ltoreq.h+k.ltoreq.10, and 1.ltoreq.j.ltoreq.3).