Iowa and Illinois taxpayers are being reminded by the Internal Revenue Service that Monday is the extended deadline for filing tax returns. 

According to the IRS, an estimated 47,800 Iowans and 311,000 Illinois taxpayers requested an automatic tax filing extension this year.

The agency urges taxpayers to file electronically using IRS e-file or the Free File system.

Many of the more than 11 million taxpayers nationwide who requested an automatic six-month extension this year have yet to file.

Although Monday is the deadline for most people, an IRS representative said some still have more time including members of the military and others serving in Iraq, Afghanistan or other combat zone localities and victims of Hurricane Isaac in Louisiana and Mississippi.

Anyone expecting a refund can get it sooner by choosing direct deposit. Taxpayers can choose to have their refunds deposited into as many as three accounts. See Form 8888 for details.

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Taxpayers with extensions should meet the deadline even if they can’t pay the full amount due. Doing so will avoid the late-filing penalty, which is normally 5 percent per month. However, interest and late-payment penalties will continue to accrue.

Details on all filing and payment options are on