We get it. Doing your taxes is no fun, especially if you know you’re going to owe money. But as with any project on which you procrastinate, leaving everything to the last minute can lead to errors, both large and small, and some of those errors could cost you serious money.
If you’re still looking at that pile of tax forms over there in the corner, we’ve compiled a list of six quick-and-dirty tips that could keep you from making some obvious, and not-so-obvious, mistakes when you finally sit down and tackle the task. They could also help you maximize your tax refund.
6 last-minute tax-filing mistakes to avoid
1. You forgot to sign it
You might wonder how anyone could forget to sign their tax form, but this simple process is one of the most common tax mistakes, according to the IRS. Just like forgetting to sign a check or a contract, it means your return isn’t valid. Usually, there isn’t a penalty or interest associated with this error (since you’ve already included a check or electronic payment if you owed), so the IRS will just send a notice asking for a valid signature, but it will delay the processing of your return. If you’re getting a refund, that too will be delayed.
So check, double-check — heck, triple-check — that you signed or completed the e-signature process before filing your return.
2. You miscarried the 9
Math errors are also a very common mistake made by folks in a hurry. Fortunately for most people, the IRS corrects any miscalculations, so there’s no need for filing an amended return. But these mistakes can mean the difference between you thinking you’re getting a refund and the reality that you actually owe taxes, so be sure to check your calculations carefully.
One way to help you avoid math errors is to file electronically so the calculations are done for you. Bye-bye, No. 2 pencil! So long, calculator!
3. You didn’t account for all your income
Did you have a side hustle early last year? A freelance design gig for a friend’s business? If so, you’re going to need to account for it, regardless of whether you received a W-2 or 1099 from whomever paid you. That’s because, while there’s an IRS threshold for filing these documents by employers, there’s no similar threshold for claiming the income. Income is income is income. If you made money and don’t report it — and the IRS catches it — it’s going to cost you penalties and interest at best, and open you to a possible audit at worst.
4. You forgot deductions or tax credits
It’s easy to forget these things when you’re in a hurry, but they can end up saving you some serious money and are well worth the extra time to figure out if you qualify. So if you’re just claiming the standard deductions because you’re under the gun, you might want to take a deep breath and check out TurboTax’s list of 10 commonly overlooked tax deductions that can keep you from overpaying the tax man.
5. You filed for an extension but didn’t understand the rules
Filing for an extension is a great idea if you’re down to the wire and don’t really understand your tax situation. But remember that an extension gives you an extra six months to file your paperwork, but not an extra six months to pay any taxes due. So, if you’re confused, tax pros recommend doing a quick calculation of your taxes, filing for your extension and making any required payment of taxes you think you owe. This will help you avoid penalties and interest once you get your final calculations together.
6. You didn’t bother to request an extension
You gave up. You shoved, slammed and jammed your return through and now it’s full of mistakes that are going to cost you money by way of penalties or because you’ve left money on the table. It’s a much better idea to file the extension, then get the help you need from a tax professional to ensure you’re not overpaying your taxes.
Whatever you do, make sure you file your taxes. Unpaid taxes can have serious consequences on your personal finances, including your credit scores if they go unpaid long enough. You can see how any outstanding taxes you might have are affecting your credit by getting your two free credit scores, updated every 14 days, on Credit.com.
How to file your taxes for free!
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This article originally appeared on Credit.com.