7 Tax Mistakes to Avoid When Filing Your 2025 Taxes, #296
Tax season is here, and if you’re just now gathering your documents to file your return—or preparing them for your CPA—this is the time to slow down and make sure you’re not making costly mistakes. In this episode, I walk through seven tax mistakes I frequently see both tax preparers and self-filers make when filing their returns. Some of these errors seem simple on the surface, but they can lead to penalties, missed deductions, delayed refunds, or paying more taxes than necessary. My goal in this episode is to help you avoid these pitfalls so you can file confidently and keep more of your money where it belongs.
You will want to hear this episode if you are interested in...
[00:00] Why tax season mistakes are more common than you might think
[01:00] The costly consequences of filing after the tax deadline
[02:30] Why double-checking basic personal information matters more than you think
[03:30] The hidden risk of missing 1099 forms in the digital age
[04:15] How a rollover mistake can accidentally create taxable income
[05:00] The surprisingly common issue of unsigned tax returns
[05:30] Why simple math errors can lead to penalties or unexpected refunds
[06:30] When free tax preparation help may—or may not—be a good option
The Most Common Tax Filing Errors
Many tax mistakes don’t happen because people are careless. They happen because people rush, assume something was already handled, or simply overlook a small detail that turns into a big issue later. One of the most common problems I see is filing past the tax deadline. Each year millions of taxpayers fail to file by the April deadline, which can trigger penalties and interest if taxes are owed. Even if you’re due a refund, filing late can delay getting your money back.
Another major issue is incomplete or incorrect information on the return. Something as simple as entering the wrong bank account for a direct deposit or forgetting to include a tax document can delay processing or create unnecessary headaches. And in today’s digital world, many tax forms are delivered electronically, which means it’s easier than ever to overlook a 1099 if you forget about an account.
Missing Deductions and Overlooking Opportunities
Beyond basic filing errors, many taxpayers lose money by missing deductions or not understanding new tax rules. Starting with the 2025 tax return, several changes introduced under the “One Big Beautiful Bill Act” create additional tax breaks. These include adjustments to the standard deduction, expanded deductions for certain taxpayers, and other potential opportunities many filers may not even realize exist.
I also discuss why deciding between the standard deduction and itemizing can significantly affect how much tax you owe. In recent years, higher standard deductions meant fewer people itemized their taxes. But changes to the state and local tax deduction cap may reopen the door for some taxpayers to itemize again, especially homeowners with mortgages or individuals paying higher state and local taxes.
Understanding what qualifies as an itemized deduction—from mortgage interest to medical expenses and charitable contributions—can make a meaningful difference in your tax outcome.
Retirement Contributions and Quarterly Tax Pitfalls
Two other mistakes I see regularly involve retirement and tax planning details that often get overlooked. Some taxpayers make IRA or Health Savings Account contributions but forget to report them properly on their return. That mistake can cause them to miss legitimate deductions that could reduce their taxable income.
Another issue is failing to pay quarterly estimated taxes. This commonly affects self-employed individuals, business owners, and retirees who receive income without automatic tax withholding. Without proper withholding or estimated payments, taxpayers may face penalties—even if they eventually pay the full amount owed.
The good news is that many tax mistakes can be corrected. If you discover an issue after filing, an amended return can often resolve the problem. But catching these issues before filing is always the best strategy.
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