I have seen before a really helpful visual showing the different loan/grant available for different incomes (and therefore suggestion of what parents should contribute).
I've googled, but I can't find this chart for 2015-16.
[Students Finance/HMRC have messed up his application, so we need to get that sorted; but in the meantime need to sort out the necessary cash to sub him in October an amount that is "reasonable". I have seen the threads on here about budgets, etc. I'm just looking for this chart, if anyone can help. thanks.]