(CNN) -- Despite delays to the kick-off of tax season, Monday, April 15 is still the deadline to get your taxes to Uncle Sam.
If you've already filed your taxes, you're one of at least 97 million taxpayers who have submitted returns to the IRS, according to filing statistics as of the first week of April. The majority, or about 90%, of returns submitted so far have been filed electronically, and the average refund is $2,755, about $40 less than the average refund during the same period last year.
And some taxpayers could have even more money coming to them. The IRS announced earlier that it has $917 million in unclaimed 2009 refunds, meaning those who didn't file a tax return for 2009 should do so -- but they better act fast because the window of opportunity also ends Monday.
It typically takes three weeks or less to receive a refund if you file electronically and you can check the status of your refund on the IRS website. But you can expect a much longer wait for your refund if you become a victim of identity theft.
"It's unfortunate ... but the IRS has to make sure they have the correct taxpayer and are protecting the correct taxpayer and protecting themselves," said Edward Karl, vice president of taxation at the American Institute of CPAs.
Identity theft is a growing problem for the IRS. If you receive a notice from the IRS that more than one tax return has been filed in your name it's often an indication that this has happened to you.
Your tax season will also be prolonged if you are targeted for an audit. To avoid raising red flags, don't do things like round to the nearest thousand, exaggerate charitable donations or inflate deductions.