calculate tax when specific amount is reached

Hi there,
I need to apply some additional tax inside sales operations (quotation, orders, invoice), but just when the total amount is greater than an specific amount.
Example 1:
A sale above $1000.00 must have 1% of Tax B, in addition to Tax A.
Product A......... $  500.00
Product B......... $  500.00
Subtotal........... $1000.00
Tax A............... $  130.00
Tax B............... $    10.00
Total Invoice .... $ 1140.00
Example 2:
A sale below $1000 must have only Tax A.
Product A......... $  500.00
Subtotal........... $  500.00
Tax A............... $   65.00
Total Invoice..... $ 565.00
Is anyone have worked on something like that, please share your ideas!
Thank you,