total cost = 600 - 600 x 0.32 ) w1 { j W9 y% i6 |8 v7 N9 T2 W( etotal gain = E - 0.5 x 0.32 E # k7 M+ f. z) Z9 yTherefore E = 485 . d# I% i0 o8 A( b+ [4.85% gain can balance the interest cost.
假设 / j5 H. q+ U; F3 i' r+ k) ` j2 [: K" F7 _% J+ [' S
- 投资于增值收益选项 (非生产投资), 利息不能抵税0 G: @& i+ b! m7 [6 U8 v
- 投资收益不对边际税率(32%)产生影响# B" g: @, t; F, M. ~
- v# F% K' t8 o* ^4 K/ u- YEarning = (principal x interest 6%) / (1-(capital gain payable tax 0.5 x marginal tax 0.32)) . w( c% U3 M4 y3 T
/ O8 H8 V z" V4 z
Break even % = Earning / Principal ! P+ y8 L* k r5 H2 o