If you haven't filed your taxes yet, you are not alone.  

An estimated 50 million Americans will be scrambling to get those last-minute returns in as the April 15th deadline approaches.

Experts at H&R Block shared a few tips for procrastinators ahead of tax day.

"You've got one more day to go. It's imperative. All of our offices are staying open late," Joseph Lautiger, an H&R Block tax advisor, told Channel 3.

He says the filing service is preparing for an anticipated rush over the next 24 hours.

"At this point in the game we are very full," he said. "We're doing what we can to help people. Find a store close to you and try to make an appointment. Come on in and let us help you. That's what we're here to do."

Lautiger says if you think you're going to owe, it's better to file sooner than later, so you have time to plan for it. 

"A lot of people come in and they're concerned because they owe or they feel like they're going to owe, and I'm happy to say some of those are pleasantly surprised that they're not," Lautiger added. "The ones that do, it's imperative that you pay what you can if not all of it."

If you're unable to meet Monday's deadline, you'll need to file a form 4868 with the IRS. 

"It's simply your name, address and social security number. There's only one page you send in, but it's a four-page packet that will give instructions on where to mail the extension."

The IRS is anticipating around 153 million additional returns to come in by Monday. 

Lautiger said not filing at all is not an option if you ever want to buy a house or a new car. He said tax return history is usually one of the things you'll be asked for in those instances.

If you need to file an extension, you can access a link to that form online.