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Paul Sakuma / AP Photo

From car dealers to appliance stores, businesses know tax refund season is an important time of year. The average tax refund so far this year is $3,200 and more than three-quarters of taxpayers get a refund. 

Seattle's Amazon.com undoubtedly gets a boost already from that influx of cash. But this year, the company is aiming for more.

A law that went into effect at the start of last year puts new limits on payday lenders.  It created a registry of borrowers and restricts them from taking out more than eight of the high-interest loans in a year.