Asylum it's within the SSF Prive matrix premium you pay between U/L Share price and SSF Price matrix, includes commission at 0.4% and interest on the geared "borrowed" cash they give you as Lender & market maker What are a bit skew is the price matrix margin (increment)refund included on Sell SSF orders, and the margin on buy orders, which should be discounted for interest included if you sell contracts prior to the 90 days until contract expiry is reached...I have a feeling they charge you interest for the days left,and the discount applies to the days u used, instead of it being interest for the days you traded effectively using the borrowed geared funds, and discount for the days you sold premature to the SSF contract expiry date - I think it's a case if you had credit for 90 days,which was built into the initial SSF buying price and didn't use it fully by selling the contract early it's your loss