How can I explain reason for leaving job so quickly on a job application?

Rather, is it ok to let a potential employer know that it was the company's "fault" that I left and I didn't just give up after 3 months?

What happened was that I was expected to pay for my department expenses out of pocket and then wait for the company to reimburse me whenever they decided to get around to it.

This was not part of my job description at all and, in fact, when I interviewed I was told what my monthly budget would be and that I would be shown how to submit orders and calculate my spend-down, etc.

I don't really want to exclude this entirely from my resume because I did really good work for this company and I have raving endorsements from management, co-workers, residents and their family members (this was a long term care facility) but I just could not stay on with a company that essentially stole back about one-fourth of my pay per month.