The Internal Revenue Service, commonly referred to as the IRS, facilitates direct deposit into a bank account for tax refunds when requested. According to the IRS website, taxpayers in 2014 who use an e-file service and request direct deposit typically receive refunds in as little as 10 days.
Official tax forms contain instructions for the direct deposit process, and e-file websites offer it as a standard option. Details are provided in IRS Publication 17, available in paper or digital form. File the refund request using Form 8888, titled "Allocation of Refund." It is possible to split refunds into as many as three checking or savings accounts, in up to three separate U.S. financial institutions.