factors to consider if purely from tax perspective:: R+ x6 ~. K8 m& B
! p& U" c- k) ^2 i( B8 ftotal additional income ) Y6 V+ T2 }$ l8 s
total taxes paid (assume it's not a cash job)5 ^( ?7 V1 |) M& ^; ]4 m
total tax credit transferrable to working spouse) Y M" o8 b# D- d; N2 N$ m+ F
total tax credit for child day care) n6 h' ^* {9 X4 F/ B! x+ N
total day care cost3 v3 u+ F5 o7 Z. g: W; r- d' U
$ v5 J5 x) P+ m4 Y' S
so the formula is: , }. [( t1 W9 X9 {: h' i, N5 A" H
total additional income - total tax paid - total transferrable tax credit to working spouse (this can be claimed if one of the spouses has 0 or very little annual income) - total child day care tax credit =/</> total cost of day care.