It's really hard to get assistantship in UTD. Not even sure about in MS in Finance. Engineering program is much better in UTD and Engineering/IT at UTD could land you finally a job. UTD has provision for a short term loan for international student so that you could arrange for it. But you can;t get to next sem without payying for the last sem. Getting on-campus job is also much harder. You might want to consider UTA as UTA might have more opportunity.