What Common Tax Mistakes Are Made When Filing Returns? (2024)

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Preparing your own tax return can feel like a very bold endeavor.

When it comes to filing simple short-form returns, there is less chance of making significant errors. These types of returns are pretty straight forward and require you to provide very little information.

While you should proceed with care and caution, you are likely very capable of filing short-form tax returns on your own.

If you are required to file a 1040 long-form tax return with supporting schedules, your level of exposure increases. You must remember the US tax code is a complicated set of rules and regulations.

Even the smallest mistake on your tax return could result in you creating an expected tax liability you didn't foresee.

Also, the amount of information you might have to process makes you more prone to mistakes.

If the cost of tax preparation by a licensed accountant or tax specialist exceeds your budget, preparing your own taxes might be your best option.

If so, understand you are responsible for any errors you make.

While our recommendation is to always discuss your tax situation with a financial professional, we also want to help you by making you aware of some of the common errors people make doing their own tax returns.

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Common Mistakes People Make Filing Their Tax Returns

While there are dozens of mistakes people make filing their own tax returns, we're going to focus on 10 of the most common errors. Some of these mistakes might seem unimportant, but rest assured, the IRS requires complete and accurate information on your tax return.

Although tax preparation software and online tax programs can make DIY filing easier, users can still make errors inputting information.

For IRS employees to efficiently process returns and initiate any refund you might be owed, it’s essential to fill out your tax return correctly.

  1. Missing Social Security Numbers. From cradle to grave, the government identifies us by our unique assigned social security number. On a tax return, this is generally considered the most critical piece of information you need to provide. If you make a mistake, your data could be applied to the wrong individual. This can cause a laundry list of problems. If you are expecting a refund, you'll be waiting a long time. Also, if you are filing a joint return with dependents – all social security numbers need to be accounted for and accurate.
  1. Misspelled Names. Yes, people misspell their names all the time. The IRS will double-check this information, looking to make sure the name on your social security card matches the name on your tax return. Mistakes could create processing delays or invalidate your return.
  1. Marking Incorrect Filing Status. This is an error that could potentially affect the calculation of your tax refund or liability. To avoid conflicts between your numbers and what the IRS arrives at using the filing status you select, be very careful and make sure you mark the appropriate box. Also, make sure you choose the correct option based on the definition and your actual status.
  1. Math Errors. Math errors have the potential of creating unwanted results like subjecting yourself to an unnecessary audit. Common math errors include addition problems, subtraction problems, transposition issues, and percentage calculations. To assure you are submitting the right numbers, use a calculator and double (even triple) check your numbers. An error at any point in the form will affect everything that follows.
  1. Missing Credits and Applicable Deductions. It's very easy for you to misunderstand the rules related to qualifying for things like earned income tax credits, itemized deductions, and standard deductions. The wrong selections could have a profound effect on your refund or tax liability.

What Common Tax Mistakes Are Made When Filing Returns? (2)What Common Tax Mistakes Are Made When Filing Returns? (3)

  1. Wrong Bank Account Numbers. We live in a time where all banking is handled electronically. If you list the wrong bank account number on your return, your refund could end up in someone else's account. Correcting this kind of error is very frustrating and time-consuming. The best-case scenario is your refund will be returned to the IRS where it will be held until you correct the information with them.
  1. Unsigned Tax Returns. After doing all the hard work to fill out your tax returns correctly, it would be a shame if you forgot to sign a printed return before mailing it. The IRS considers an unsigned tax return to be invalid. If you wait until the last minute, the potential for being penalized for a late return is very high.
  1. Submitting Electronic Return With Wrong PIN Number. This is the equivalent of not signing a mailed in return. Without the correct PIN, your return will be considered invalid and potentially late.
  1. Unreported Income. Almost everyone remembers to report primary sources of income like W-2s. Where people fail is neglecting to account for interest (1099-INT) or dividend income (1099-DIV). Other income sources like the sale of assets or independent contractor work (1099-MISC) are sometimes missing too. If the IRS were to think you failed to report certain types of income on purpose, it could result in an audit or other disciplinary action.
  1. Missing the April Filing Deadline. This is a big problem. Failure to comply with the statutory reporting deadline results in a penalty and interest on any amounts owed. If you feel you won't make the deadline, you can file form 4868 for an extension as long as at least 90% of your estimated liability is paid on time or with the extension.

How To Avoid Errors When Filing Your Taxes

Yes, we all make errors. In the eyes of the IRS – accuracy, completeness, and timeliness are vital to the agency being able to do its job efficiently.

If you do make a mistake filling out and filing your tax return, you will likely get at least one opportunity to fix the error.

However, you can expect delays in processing, which will impact the timeliness of your tax refund – if you’re owed one. You might also become subject to penalties and interest on anything owed.

To prevent and/or avoid errors related to your tax returns, follow these suggestions:

  • Take time to proofread the information section of your tax returns
  • If possible, have a trusted family member or friend double-check your information
  • Make sure you account for and have documentation to support all forms of income
  • Use a calculator for calculations of any kind
  • Triple check your social security number and banking information
  • Sign and date the return if you plan to mail it in
  • Don’t wait until the last minute to do your taxes
  • Mail or submit your return on time

One final word of advice. If you consistently have issues filing your taxes on your own, do whatever you can to hire a professional to help you with the process.

For some people, the added stress of doing their own taxes just isn’t worth the money they save. Also, you might save enough from errors they correct to compensate for the fee you will pay to have the return prepared.

File Your Taxes Online, with a Tax Pro, with H&R Block's Tax Pro Go!

What Common Tax Mistakes Are Made When Filing Returns? (5)

Written by Women Who Money Cofounders Vicki Cook and Amy Blacklock.

Amy and Vicki are the coauthors of Estate Planning 101, FromAvoiding ProbateandAssessing AssetstoEstablishing Directives and Understanding Taxes,Your Essential Primer toEstate Planning, from Adams Media.

What Common Tax Mistakes Are Made When Filing Returns? (6)What Common Tax Mistakes Are Made When Filing Returns? (7)

What Common Tax Mistakes Are Made When Filing Returns? (2024)

FAQs

What Common Tax Mistakes Are Made When Filing Returns? ›

Last year, the number of errors grew 12x times! Answer: Over 12.9 million errors! Questions: Does it surprise you that taxpayers make so many errors on their tax returns?

How common are errors on tax returns? ›

Last year, the number of errors grew 12x times! Answer: Over 12.9 million errors! Questions: Does it surprise you that taxpayers make so many errors on their tax returns?

What is a common mistake people make when filling out a W-4? ›

Misspelled names. The names of all taxpayers and dependents listed on the return should match the names on their Social Security cards. Inaccurate information. Taxpayers should carefully enter any wages, dividends, bank interest and other income they received to make sure they report the correct amounts.

Does the IRS care about small mistakes? ›

Mistakes on your taxes can trigger audits. You may have to pay fines or fees if you make errors, especially if you were clearly careless. That being said, the IRS isn't as aggressive about this as most people assume. In many cases, they'll just adjust small errors on their end.

How do I know if something is wrong with my tax return? ›

Different amount: If the refund isn't the amount you expected, you should receive a notice explaining why. If you don't receive a notice or you believe the IRS changed your refund incorrectly, contact the IRS or order a transcript to find out about any IRS changes.

What are the biggest tax filing mistakes? ›

People who don't wait to file before they receive all the proper tax reporting documents risk making a mistake that may lead to a processing delay. Missing or inaccurate Social Security numbers (SSN). Each SSN on a tax return should appear exactly as printed on the Social Security card. Misspelled names.

Does the IRS catch all tax mistakes? ›

Does the IRS Check Every Tax Return? The IRS does not check every tax return; in fact, it does not check the majority of them; however, the IRS implements methods that track certain factors that would result in a further examination or audit by them.

What is the correct tax filing mistake? ›

Use Form 1040-X, Amended U.S. Individual Income Tax Return, and follow the instructions. You should amend your return if you reported certain items incorrectly on the original return, such as filing status, dependents, total income, deductions or credits.

What are the two outcomes if you fill out your W4 incorrectly? ›

If W-4 information is incorrect, the amount an employer decides to withhold for that employee could be as well. Withholding errors fall into two categories: over-withholding or under-withholding.

Will the IRS let me know if I made a mistake? ›

However, the IRS may find those errors and send you a notice. See the “Received a Notice” below, if you do receive a notice before filing a corrected return. if it is after the current year filing date: you will need to file a Form 1040X, Amended U.S. Individual Income Tax Return.

What raises red flags with the IRS? ›

Too many deductions taken are the most common self-employed audit red flags. The IRS will examine whether you are running a legitimate business and making a profit or just making a bit of money from your hobby. Be sure to keep receipts and document all expenses as it can make things a bit ore awkward if you don't.

What is most likely to trigger an IRS audit? ›

Unreported Income

Taxable income that is not reported on your tax return is likely to trigger an IRS audit. Common kinds of unreported income include: Income from a hobby or side hustle.

Who gets audited by the IRS the most? ›

The two groups most likely to get audited are those earning more than $10 million and taxpayers who claim the Earned Income Tax Credit, who tend to be low- or middle-income workers.

Can you get in trouble for making a mistake on your taxes? ›

There is no specific penalty for an incorrect tax return. However, penalties can apply to your incorrect tax return. For instance, if you have to pay more tax, more penalties will apply in correlation to the increase in tax.

Does the IRS check every tax return? ›

The percentage of individual tax returns that are selected for an IRS audit is relatively small. In 2022, just 0.49% of individual tax returns were selected for audits, or fewer than one out of every 100 returns.

What is the penalty for filing taxes wrong? ›

5% of the amount due: From the original due date of your tax return.

How often do people make mistakes on taxes? ›

According to the IRS, the error rate for tax returns that are filed on paper is 21 percent, so if you do make a mistake you're not alone.

Does the IRS make mistakes on refunds? ›

Yes. While not very common, The IRS does make mistakes.

It catches enough errors or supposed errors itself that it sent out 1.6 million notices related to math errors a few years ago. Even though the Service focuses on catching these mistakes, it also can make them.

Is tax preparer responsible for errors? ›

In most cases, the taxpayer is responsible for tax filing mistakes even if a professional tax preparer committed the error. However, if the tax preparer made a major error like falsifying expenses or filing without client consent, the taxpayer can file a complaint with the IRS.

Can I get in trouble for making a mistake on my tax return? ›

You cannot go to jail for making a mistake or filing your tax return incorrectly.

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