What common tax mistakes should I avoid?

Asked by: Prof. Lavinia Weber  |  Last update: May 26, 2026
Score: 4.3/5 (5 votes)

Common tax mistakes to avoid include missing the filing deadline, entering incorrect Social Security numbers, making math errors, forgetting to sign the return, and omitting side-gig income. To prevent penalties and delays, e-file your return, double-check personal information, ensure all 1099/W-2 forms are included, and consider hiring a professional.

What is the most common mistake made on taxes?

Avoid These Common Tax Mistakes

  • Not Claiming All of Your Credits and Deductions. ...
  • Not Being Aware of Tax Considerations for the Military. ...
  • Not Keeping Up with Your Paperwork. ...
  • Not Double Checking Your Forms for Errors. ...
  • Not Adhering to Filing Deadlines or Not Filing at All. ...
  • Not Fixing Past Mistakes. ...
  • Not Planning for Next Year.

What raises red flags for the IRS?

The IRS uses a combination of automated and human processes to select which tax returns to audit. Not reporting all of your income is an easy-to-avoid red flag that can lead to an audit. Taking excessive business tax deductions and mixing business and personal expenses can lead to an audit.

What not to forget when filing taxes?

Wages, dividends, bank interest, and other income received and that was reported on an information return should be entered carefully. This includes any information needed to calculated credits and deductions.

What is the 20k rule?

The "20k rule" refers to the traditional IRS threshold for reporting income from payment apps and online marketplaces on Form 1099-K: over $20,000 in gross payments AND more than 200 transactions in a calendar year. While a law (the American Rescue Plan) temporarily lowered the threshold to $600, recent legislation, the One Big Beautiful Bill Act (OBBBA) (OBBBA), has reinstated the $20,000/200-transaction rule for tax years starting in 2025, providing relief for casual sellers and gig workers. 

Top 8 Most Common Tax Errors You Need to Avoid!!!

17 related questions found

Does the IRS track Venmo?

The IRS does not actively monitor every Venmo account 1-(855)(518)(9622). However, Venmo may report certain transactions to the IRS if they meet federal reporting requirements 1-(855)(518)(9622). This typically applies to income-related payments, not casual personal transfers 1-(855)(518)(9622).

Will Zelle be taxed in 2025?

Does Zelle Report Payments to the IRS: Form 1099-K Details. IRS Form 1099-K reports payments received for goods or services during the tax year from credit, debit, or stored value cards and TPSOs. The 2025 reporting threshold is $2,500 or more, which will be reduced to $600 in 2026.

What will trigger a tax audit?

Here are 12 IRS audit triggers to be aware of:

  • Math errors and typos. The IRS has programs that check the math and calculations on tax returns. ...
  • High income. ...
  • Unreported income. ...
  • Excessive deductions. ...
  • Schedule C filers. ...
  • Claiming 100% business use of a vehicle. ...
  • Claiming a loss on a hobby. ...
  • Home office deduction.

What gets audited the most by the IRS?

Businesses that show losses are more likely to be audited, especially if the losses are recurring. The IRS might suspect that you must be making more money than you're reporting. Otherwise, why would you stay in business? Most likely to be audited are taxpayers reporting small business losses.

What are the 5 C's of audit issues?

The 5 Cs of audit (Criteria, Condition, Cause, Consequence, Corrective Action) are a framework for structuring clear, actionable audit findings, explaining what should be (Criteria), what is found (Condition), why it happened (Cause), what the impact is (Consequence/Effect), and how to fix it (Corrective Action/Recommendation) to drive organizational improvement and compliance.

How to not get screwed on taxes?

In this article

  1. Plan throughout the year for taxes.
  2. Contribute to your retirement accounts.
  3. Contribute to your HSA.
  4. If you're older than 70.5 years, consider a QCD.
  5. If you're itemizing, maximize deductions.
  6. Look for opportunities to leverage available tax credits.
  7. Consider tax-loss harvesting.
  8. Consider tax-gains harvesting.

What are the common tax traps?

Common traps include taxes on Social Security benefits, Medicare surcharges, required minimum distributions (RMDs), real estate sales and estimated quarterly tax payments. With some knowledge, though, you can more effectively steer clear of these potential pitfalls.

What is the $600 rule in the IRS?

The IRS $600 rule refers to a change in reporting requirements for third-party payment apps (like Venmo, PayPal) for taxable income from goods and services, where platforms must send a Form 1099-K if you receive over $600 in a year, intended to capture gig economy/side hustle income, though delays and phased implementation have adjusted the timeline, with current rules for 2024 using a higher threshold ($5,000) before fully phasing to $600 for future years, but remember all taxable income, regardless of form, must always be reported.
 

Is Zelle reporting to the IRS?

Zelle® does not report transactions made on the Zelle Network® to the IRS, including payments made for the sale of goods and services. The law requiring certain payment networks to provide forms 1099K for information reporting on the sale of goods and services does not apply to the Zelle Network®.

What is the $27.39 rule?

The "27.39 rule" (often rounded to $27.40) is a simple financial strategy to save $10,000 in one year by consistently setting aside $27.40 every single day, making it an achievable micro-saving habit to build wealth or an emergency fund. It turns the daunting goal of saving $10,000 into a manageable daily action, emphasizing consistency over large lump sums.

What is the smartest thing to do with a tax refund?

The following are good options for your tax money, and should be the top priorities for your refund.

  1. Start and/or Increase Your Emergency Savings. ...
  2. Pay Off High-Interest Debt. ...
  3. Use It On Something You Really Need. ...
  4. Start A Savings Account. ...
  5. Refinance Your Mortgage. ...
  6. Invest In a Tax-Sheltered Account. ...
  7. Invest In a Taxable Account.