I pay £250 per month at the moment but had a promotion with slightly better pay. My parents are happy with me living at home whilst I save as I help out a lot and so it works out well for all of us and I have spoken to my parents and they are happy for me to live at home, there is no pressure from them to move out. My 20 year old brother also lives at home but is currently unemployed so he doesn't pay keep and my sister who is only 16 and goes to sixth form.
My parents are not well off so genuinely need my contribution. My Dad works full-time, but my Mum doesn't work due to her mental health. So the bulk of my Dad's earnings go on all the household bills aside from my £250 contribution which doesn't seem fair.
I am planning to live at home for one more year, do a lot of over-time and save as much as possible and then move out. I used all my savings whilst at university so I have very few savings at the moment. My income isn't particularly high but as my only expenses are the £250/month and a few other bills like my car insurance I will be able to save a good amount. However, I feel guilty being able to save money when my parents are not able to do so, they live pay cheque to pay cheque. I have helped out before when they have been in a pinch, for example I paid for some car repairs for my Mum's car.
I think my parents want me to start paying more keep now but they haven't outright said anything so I have no idea how much more I should start paying. I have a lot of guilt and feel like I'm being selfish.
How much do you think an adult child living at home who works full-time should pay keep in this scenario?