贈與稅計算網頁

  http://www.cs.ccu.edu.tw/~tch93/tax.php

手動計算 (edit by mtdas, ref. Andor)

  稅前=x  稅後=y  (小數點後無條件捨去)
  ============================================
   y=1~23            →  x= y+1
   y=24~920          →  x=(y-1)     /0.92+1
   y=920~9020        →  x=(y-21)    /0.9 +1
   y=9020~81020      →  x=(y-1021)  /0.8 +1
   y=81020~711020    →  x=(y-11021) /0.7 +1
   y=711020~         →  x=(y-111021)/0.6 +1
  --------------------------------------------
   x=2~24            →  y= x-1
   x=25~1000         →  y=(x-1)*0.92+1
   x=1000~10000      →  y=(x-1)*0.9 +21
   x=10000~100000    →  y=(x-1)*0.8 +1021
   x=100000~1000000  →  y=(x-1)*0.7 +11021
   x=1000000~        →  y=(x-1)*0.6 +111021
  ============================================