  When adding integers in base $m$, carries occur. The same happens modulo a
generic integer $q$ when the set of digits is a complete set of residues modulo
$m$ for some positive integer $m$ dividing $q$. In this paper we prove that
asymptotically every digital set in this setting induces carries with frequency
at least $1/4$, thus generalizing results of Alon, Diaconis, Shao and
Soundararajan.
