I am trying to write an excel formula to find the percentage amount from a gross amount where they's a band of different percentages.
Find examples below of what I'm looking for:


Bracket Group Percentage Bracket 1 0 - 8,555.50 0%
Bracket 2 8,555.51 - 10,000 15%
Bracket 3 10,000 - 83,333 20%
Bracket 4 >83,333 30%


Example if you have a gross of 24,300


Bracket 1 up-to 8,555.50 8,555.50 0% 0.00 Amount = 0
Bracket 2 8,555.51 - 10,000 1,444.50 15% Amount = 216.68
Bracket 3 10,000 - 83,333 14,300.00 20% Amount = 2,860.00
Bracket 4 >83,333 0.00 30% 0.00
Total = 3,076.68


Example if you have a gross of 50,000


Bracket 1 up-to 8,555.50 8,555.50 0% 0.00 Amount = 0
Bracket 2 8,555.51 - 10,000 1,444.50 15% Amount = 216.68
Bracket 3 10,000 - 83,333 40,000.00 20% Amount = 8,000.00
Bracket 4 >83,333 0.00 30% Amount = 0.00
Total = 8,216.68