The monthly bills you receive, and the amount you are responsible for paying, will be established based upon your total student loan debt and gross monthly income. You provide your servicer/lender with needed information about your total gross monthly income that is received from all sources.
This includes employment, benefits, consulting, and any source at all.
Those seeking assistance can find answers to some common questions people have on student loans and they can also locate information on many of the options you have to get assistance.
New programs are always being created as well, some of which may be more effective than others.
So as your income increases over time you will need to pay more money towards your balance.