If you’ve been putting off getting your taxes done and getting them in the mail- this is it. Today is tax day and unless you somehow manage to secure an extension, your tax return needs to be done and electronically filed or postmarked before midnight tonight.

Have you ever wondered what happens if you mail your taxes and the IRS says that they didn’t get your return? Well, hate to be the one to tell you this, but unless you can show solid documented proof that you put your return in the mail by the end of the day today, April 17th, too bad, so sad.

If you're a last-minute filer and will be sending in your return through the mail, here's a little something to keep in mind while you're in line at the Post Office today - it's always better to be safe than sorry when it comes to mailing your tax forms.

If you haven't mailed off your tax return yet, definitely consider sending them in via registered or certified mail so that you can show absolute proof that you mailed your taxes on time. Yes, you'll have to spend a couple dollars to send your taxes certified or registered, but if you do this- it'll be the proof that you might need if you're forced to show the IRS that you mailed in the return not only on time but when you said that you did.

You can also send in your return through DHL Express, FedEx, and UPS if you're concerned about there being a record that you really did have your return in the mail in time- but make sure to double check physical delivery addresses with the IRS because delivery services such as DHL, FedEx and UPS aren't able to deliver to P.O. boxes.

[via USPS/eFile]