If you decide to pay lump sums against your Mortgage does this effect your TRS in anyway -say for example my Mortgage is currently 330,000, 2 years old I am a first time buyer and owner occupier, is there a point when I overpay it will effect my TRS - i.e I like to chip away at my mortgage every year, I have a big enough lump sum this year but I don't want to loose TRS by overpaying- I need some advice