  We discuss aspects of the low energy phenomenology of the MSSM, in the large
$\tan {\beta} $ regime. We explore the regions of the parameter space where the
$h_t$ and $h_b$ Yukawa couplings exhibit a fixed point structure, using
previous analytic solutions for these couplings. Expressions for the parameters
$A_{t}$ and $A_{b}$ and the renormalised soft mass terms are also derived,
making it possible to estimate analytically the sparticle loop -- corrections
to the bottom mass, which are important in this limit.
