Around 25% of take home pay but we overpay up to around 45% at the moment. We moved last year, added approximately £500pcm to our monthly mortgage figure in order to buy our long term "forever" home, and are aggressively overpaying during the current fix with a view to shortening the term of the mortgage when it comes up for renewal. Based on the purchase price, we own around 25% of our home outright now. We are early 30s. In the future we probably won't overpay as much as we'll want a new car or a nice holiday but having a smaller mortgage is a priority right now, particularly after taking on a lot of additional borrowing last year to move here. We're not overstretched but I felt happier with a smaller mortgage.