|   |   |   |   |   |   |
|---|---|---|---|---|---|
|Total|Actual fee|Net|Expected Net|Actual percentage||
|103.2|3.29|99.91|100|(3.29 - .3) / 100 = 0.0299 * 100 = 2.99|103.2*0.029 + .3 = 3.2928|
|499.29|14.78|484.51|484.93|(14.78-.3) / 484.93 = 0.0299 * 100 = 2.99|499.29*.029+.3 = 14.7794|
|550.74|16.27|534.47|534.93|(16.27 -.3) / 534.93 = 0.0299 * 100 = 2.99|550.74*.029+.3=16.2715|
 
We are sending a payment of 103.20 to paypal which is what they then use to make the 2.9% + $0.30 fee calculation instead of basing it off of $100. So, the fee ends up being $3.29 instead of $3.20.
 
We need a better formula:
 
A * 0.029 + 0.3 = B
 
A - B = C  
A = C + B
 
C = 100
 
(C + B)*0.029 + 0.3 = B  
0.029C + 0.029B + 0.3 = B  
0.029C + 0.3 = B-0.029B  
0.029C + 0.3 = 0.971B  
B = (0.029C + 0.3)/0.971
 
0.029*100 + 0.3 = 3.2  
3.2/(1-0.029) = 3.2956