If statement or switch case

I am working on a tax calculation program. i want to use multi if statement in the manner below:-

if sex=Male
and income>110000 and income<=150000
then tax=(income-110000) *10

elseif if sex=male
and income>150000 and income<=250000
then tax=(income-150000)*20+4000

elseif sex = male
and income>250000
then tax(income-250000)*30+24000

Please tell what will be the proper syntax for this problem in access and where to write this code.

Thanks in advance.