The rebate is calculated based on the lot size traded by the IB’s network clients. The formula used is:
Lots x IB Points x Tick Size x Contract Size = Rebate in USD
Example for an IB who is at a 10 point rebate tier
Forex:
1 Lot Cent EURUSD
1 Lot x 10 x 0.00001 x 1000
= 0.10 USD
0.10 Lot Cent EURUSD
0.10 Lot x 10 x 0.00001 x 1000
= 0.01 USD
0.01 Lot Cent EURUSD
0.01 Lot x 10 x 0.00001 x 1000
= 0.00 USD
Example for an IB who is at a 10 point rebate tier
Gold:
1 Lot Cent Gold (Contract Size 1)
1 Lot x 15 (150% for Metals) x 0.01 x 1
=0.15 USD