  Old-minimal $R+R^2$ supergravity has a $U(1)$ R-symmetry which rotates the
chiral curvature superfield. We gauge this R-symmetry and study new
interactions involving the gauge multiplet in the context of inflation and
supersymmetry breaking. We construct models where supersymmetry and the
R-symmetry are spontaneously broken during and after Starobinsky inflation, and
one-loop gauge anomalies are cancelled by the Green--Schwarz mechanism which
can also generate Standard Model gaugino masses. The hierarchy between the
auxiliary fields, $\langle F\rangle\gtrsim\langle D\rangle$, leads to split
mass spectrum where the chiral multiplet masses are around the inflationary
scale ($10^{13}$ GeV), while the gauge multiplet masses can be arbitrarily
small.
