Usually, cash advance loans are for a period of two weeks, allowing you to pay your loan on your next payday. Long term payday loans, on the other hand, are generally for a period of 30 days, or even longer. Basically, long term payday advances are merely an extension or rolling over of an existing loan. Payday loans as a rule are designed to be short term solutions, meaning these longer-term loans come with extra interest and fees, making it important to consider carefully whether you really need the loan for a long period of time.