IRS data shows that the average refund check so far is about $2,200, or $1,000 less than a year earlier. Here's what experts say.

Experts warn that filing close to the deadline or submitting a return with errors is a recipe for delay. During tax season, IRS employees wear a lot of hats. Filing a paper return or having your return flagged will likely lead to longer wait times.

Typically, a paper check will take three to eight weeks to arrive in your mailbox, but you can track exactly where your tax refund is and when you can expect to receive it with the USPS' tracking tool, Informed Delivery. The free service sends you alerts for all new mail and provides images of the front of envelopes.