A spokeswoman for the Internal Revenue Service is warning taxpayers about simple mistakes that could delay refunds

Karen Connelly says even one wrong digit in a Social Security number could cause problems. Another issue is names, including the spelling, matching assigned Social Security numbers. For people who ask to have their refund direct deposited into their bank account, correct account numbers and bank routing numbers are critical.

Among people who file paper returns, failure to sign the return and simple math errors are common mistakes.

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