I am finding some inconsistencies between fees reported by C.A.T. and fees reported by Poloniex. Take this trade for example:
Here is a trade in C.A.T.:

Here is the same trade in Poloniex:

While C.A.T. reports a tradefee of 0.00000015 BTC, Poloniex reports a tradefee of 0.0001 BTC.
So, Polo is reporting a 666% higher trade fee that C.A.T!
WTF is going on?
Is Satan taking my money?
Hi, what CAT Version are you using? Because on version before 4.6 (or 4.5 i don't remember) there was an errore on CAT fees.
In fact, i tought Poloniex put in the FEES field, the calculated fee amount, but then i notice that there was the % and not the calculated fees.
In your case 0.00000015 BTC is probably 0.15% (then i must calculate trade qtyxprice - 0.15% = total without fees).
This is why i think you're not using CAT 4.6