Large tan β effects in flavour physics

We discuss Bu→τν, ΔMBs and other low-energy observables in the framework of the MSSM at large tanβ. We show that for heavy squarks and A terms such scenario has several interesting virtues. It naturally describes: i) a suppression of B(Bu→τν) of (10-40)%, ii) a sizable enhancement of (g−2)μ, iii) a heavy SM-like Higgs , iv) small non-standard effects in ΔMBs and B(B→Xsγ) (all in agreement with present observations). The possibilities to find more convincing evidences of such scenario with future flavour-phyiscs measurements are briefly outlined.