We review recent progress in precision calculations and the development of Monte Carlo generators for luminosity monitoring at meson factories. It is shown how the theoretical accuracy reached by presently used large-angle Bhabha tools at meson factories is at the 0.1\% level and, therefore, comparable with that reached about a decade ago for luminosity monitoring through small-angle Bhabha scattering at LEP.

PACS numbers: 12.20.--m, 13.40.--f, 13.66.Jn