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Tax Season Prep: Key Deadlines and Common Mistakes to Avoid

For many people, tax season can feel stressful or overwhelming. Between gathering documents, remembering deadlines, and trying to avoid mistakes, it’s easy to feel unsure about where to start.

The good news is that a little preparation goes a long way. Understanding the major tax deadlines and the most common filing mistakes can help make the process smoother and less stressful.

Here’s a simple guide to help you prepare for tax season with confidence.

Key Federal Tax Deadlines to Know

Knowing the timeline ahead of time helps you stay organized and avoid unnecessary stress.

January: Tax Forms Begin Arriving
Employers begin sending W-2 and 1099-NEC forms, and banks and financial institutions send documents such as 1099-INT or 1099-DIV that report interest or investment income.

Mid-April: Federal Tax Filing Deadline
For most individuals, 2025 federal tax returns are due on Wednesday, April 15, 2026. This is also the deadline to pay any taxes owed for the previous year.

October: Extension Filing Deadline
If you request a tax filing extension, your return is typically due in mid-October. Keep in mind that an extension gives you more time to file your return, but not more time to pay taxes owed.

Collecting and reviewing your documents early can help you avoid last-minute pressure and give you time to address any questions before the deadline.

Now that you know the key deadlines, it’s also helpful to understand a few of the most common mistakes people make during tax season.

4 Common Tax Filing Mistakes to Avoid

Even small errors can slow down processing or delay refunds. Here are a few of the most common mistakes taxpayers make.

1. Waiting Until the Last Minute

Procrastinating is one of the biggest sources of tax season stress. Filing early gives you time to gather missing documents, review your return carefully, and avoid rushing through important details.

It can also help protect you from potential identity theft, since filing early reduces the chance that someone else could file a fraudulent return using your information.

2. Forgetting Important Documents

Many people receive multiple tax forms throughout January and February. Missing even one document can lead to an incorrect return.

Common documents to watch for include:

  • W-2 forms from employers
  • 1099 forms for freelance, contract, or interest income
  • Student loan interest statements
  • Mortgage interest statements

Keeping a simple checklist of expected forms can help ensure nothing slips through the cracks.

3. Simple Errors on Your Return

Small mistakes—such as incorrect Social Security numbers, math errors, or wrong bank account details—can delay processing.

Before submitting your return, take a few extra minutes to double-check:

  • Personal information
  • Income amounts
  • Direct deposit details for your refund

A quick review can help prevent unnecessary delays.

4. Not Planning for Taxes Owed

While many people receive refunds, some taxpayers find they owe money when they file.

If that happens, planning ahead can help reduce financial stress. Setting aside funds in a savings account throughout the year or reviewing your withholding with your employer can help avoid surprises in future tax seasons.

If a tax bill does arise, having access to tools and financial guidance can help you evaluate your options and stay on track.

Getting Organized for a Smoother Tax Season

A few simple habits can make tax season easier year after year:

  • Save digital copies of tax documents in one place
  • Keep records of major financial events (new job, home purchase, education expenses)
  • Review your income and withholding periodically

Members First also offers financial calculators and budgeting tools that can help you understand your broader financial picture and plan ahead for upcoming expenses.

A Reminder: You Don’t Have to Navigate Financial Moments Alone

Tax season is one of many financial moments that can feel complicated at first. But with a little preparation and the right information, it becomes much more manageable.

Members First Credit Union is committed to supporting members with practical financial education and helpful tools throughout the year. If you have questions about your financial goals or want to explore resources that support your long-term plans, our Member Services team is always here to help.

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