What can PhD students use as proof of income? I am currently trying to prove to a law firm that I earn a salary but wasn't sure what to use. Can we obtain pay slips from our university departments?
I've had to provide proof of income to letting agencies and have used the letter that I got from the university accepting me onto the PhD and detailing the studentship finances. If you don't have a similar letter ask the postgrad administrator in your department to write a letter on headed paper detailing your studentship amount and how often it is paid. You may have to provide bank statements as well depending on how much proof the company need.
I've experienced the same as Pixie. When I applied for a mortgage, the mortgage company accepted a letter from the university and my bank statements. I used to get an updated letter every year, stating what the stipend would be for that period.