We are looking to buy together. He has £80k and I have £40k for a deposit. We will be buying this year but I have got a better job meaning I can save £400-500 extra a month. If I used this to overpay the mortgage until I had put in an additional £40k (6-8 years depending on bonus and life), how could I work out how much this would reduce our mortgage term?
We are looking at a mortgage of around £200k.