B decays to τ leptons at Belle

We present measurements of B decays with the τ lepton in the final state, B→τντ and B→D(⁎)τντ, with the Belle detector at the KEKB asymmetric energy e+e− collider. Constraints on a charged Higgs boson are discussed based on the Type-II two Higgs doublet model. We also discuss prospect of the measurements in coming years and at the Super-KEKB/Belle II experiment.