This article presents two procedures that are useful in both macro and micro projection/simulation models concerning marriage/union formation and dissolution. One is for computing time-varying sex-age-specific rates that are consistent with independently projected life course propensities of marriage/union formation and disolution in the one-sex life course simulation model. Another one is for computing time-varying sex-age-specific rates that are consistent with the two-sex constraints and with independently projected summary measures of marriage/union formation and dissolution in the two-sex family household projection model. Illustrative numerical examples based on U.S. data demonstrate that the proposed procedures are valid. © 2004 Max-Planck-Gesellschaft.