Doing your tax return by yourself—even if you use tax preparation software—can still be a challenge.
We all know the tax code is complex and constantly changing. And that creates a great deal of anxiety and apprehension for some filers.
"They know they don't understand it and they're not sure they can handle it," said professor Nathan Oestreich, who teaches tax management at San Diego State University.
Things can get especially confusing when there are possible deductions or credits related to dependents, child care or education expenses.
(Read more: Most common tax surprises for same-sex couples)
"They all have different age requirements, so there are a lot of the questions related to that," explained Lisa Greene-Lewis, a CPA at TurboTax. "Also, people are hearing that if they support someone financially, they can claim that as a deduction, but there are a lot of different tests that they have to meet in order to do that."
Where's my refund?
The most common question for the IRS at this time of year is from taxpayers wanting to know the status of their refund. This is something you do online and not over the phone. Go to: Where's My Refund?
You can check within 24 hours after e-filing or four weeks after you mail in a paper return. The site is updated once a day. You'll need your Social Security number, filing status and exact amount of the refund claimed to track your return.
The IRS says most refunds are issued within 21 days of receiving the return. The quickest way to get your money is to file electronically and choose direct deposit, rather than having a refund check mailed to you. You can e-file for free, if you have an adjusted gross income of less than $58,000. Use the IRS Free File site.
(Read more: Cheat on taxes? Never!)