Westpac will reduce commission paid on home loans through its St George brand from November, Broker News reported.The bank will no longer pay trail commission on the first year of a loan, and will pay brokers 0.15 per cent in the second and third year, 0.2 per cent in the fourth year, and 0.25 per cent in the fifth year, with the 0.25 per cent trail payment to continue for the life of the loan.Currently, the bank pays 0.2 per cent for the life of a loan, excluding GST, the trade media outlet reported.Upfront payments will now be tiered according to individual broker conversion rates. St George is currently paying a base upfront commission of 0.5 per cent, with a bonus 10 basis points for brokers with conversion rates of more than 70 per cent.