What to Prepare for Tax Year 2025 Filing

ARTICLE | January 21, 2026

The 2026 tax filing season is right around the corner, and while April may seem far off, the best time to prepare is now. Whether you’re an individual taxpayer managing multiple income streams or a business owner navigating new regulations, early preparation can make the difference between a smooth filing experience and a stressful scramble at the deadline.

With significant changes introduced by the One Big Beautiful Bill Act (OBBBA) and new IRS reporting requirements for digital assets, this year’s tax season brings both opportunities and complexities. Understanding what’s changed and getting your documentation in order now will help you file accurately, avoid processing delays, and potentially maximize your refund or minimize your tax liability.

Key Deadlines You Need to Know

Mark your calendar with these critical dates for the 2025 tax year. Since January 31, 2026, falls on a Saturday, the deadline for receiving W-2s and 1099 forms extends to February 2, 2026. Individual tax returns are due April 15, 2026, which is also the deadline for your first-quarter estimated tax payment for 2026. If you’re a business owner, note that S-corporation and partnership returns (Forms 1120-S and 1065) are due March 16, 2026, giving you slightly less time to prepare. While extensions are available, remember that they extend your filing deadline, not your payment deadline. Any taxes owed must still be paid by the original due date to avoid penalties and interest charges.

Essential Documents to Gather Now

One of the most effective ways to streamline tax preparation is by establishing a solid organizational system. Individual taxpayers should begin collecting income documents, including Forms W-2 from employers, Forms 1099 for various types of income (interest, dividends, non-employee compensation, and miscellaneous payments), and Social Security benefit statements. This year, if you’ve engaged in cryptocurrency transactions through custodial platforms like Coinbase or Kraken, watch for the new Form 1099-DA. However, keep in mind that for 2025, this form will not include cost basis information, so you’ll still need to maintain your own detailed records of purchase prices and transaction dates.

Business owners face additional documentation requirements. Ensure you have year-end profit and loss statements, balance sheets, complete payroll records, and documentation for all deductible expenses. If you’ve hired contractors or made payments exceeding $600 to non-employees, confirm that you’ve issued the required 1099 forms by February 2. Maintaining well-organized books throughout the year significantly reduces preparation time and helps prevent filing delays caused by missing information.

Understanding New Tax Law Changes

The One Big Beautiful Bill Act introduces several provisions that could significantly impact your 2025 tax return. Taxpayers age 65 and older may qualify for an additional deduction of up to $6,000 per person, though this benefit phases out at higher income levels. If you work in an eligible occupation and receive cash tips, you may be able to deduct up to $25,000 in qualified tips annually. Similarly, qualified overtime compensation may be deductible up to $12,500 for single filers or $25,000 for married couples filing jointly. Both of these deductions have income phase-out thresholds, so it’s important to track these amounts carefully and consult with your tax advisor to determine your eligibility.

Another notable change affects the State and Local Tax (SALT) deduction cap, which increases to $40,000 for 2025 and $40,400 for 2026, with gradual increases through 2029. This expanded deduction phases out for taxpayers with income over $500,000. Additionally, many green energy credits that were expanded under the Inflation Reduction Act have been reduced or eliminated. The Clean Vehicle (EV) Credit, for instance, was terminated for purchases after September 30, 2025, making this one of the last opportunities to claim such credits if you’ve recently purchased an electric vehicle.

Avoiding Common Filing Mistakes

Each tax season, preventable errors cause unnecessary delays and trigger IRS notices. The most common mistakes include reporting income that doesn’t match IRS records, entering incorrect Social Security numbers, forgetting to report estimated tax payments already made, and filing before receiving all necessary tax forms. Take the time to review your estimated tax payments for accuracy. If you’re self-employed or have significant investment income, underpayment can result in penalties even if you ultimately owe a small balance. Using the IRS Tax Withholding Estimator can help wage earners determine whether their current withholding remains appropriate, particularly if your income or family situation has changed during the year.

The IRS has also announced it will largely discontinue issuing paper refund checks, with limited exceptions. Taxpayers will now be required to receive refunds electronically through direct deposit. While most refunds are issued within 21 days, certain returns take longer if the IRS needs to review them for errors or potential identity theft. Returns claiming the Earned Income Tax Credit or Additional Child Tax Credit will not receive refunds until mid-February under the PATH Act, so plan your cash flow accordingly if you’re expecting these credits.

How Insero Can Help You Navigate Tax Season

Tax preparation doesn’t have to be overwhelming. At Insero, we bring more than 50 years of experience helping individuals and businesses navigate complex tax situations with confidence. Our team approach means you don’t just get one advisor, but access to a deep bench of state, federal, and international tax expertise tailored to your unique circumstances. We stay current on all tax law changes, so you don’t have to, and we meet with clients proactively throughout the year to understand their businesses and bring value-added ideas to the table.

Whether you’re dealing with new digital asset reporting requirements, trying to determine which OBBBA deductions you qualify for, or simply want to ensure you’re capturing every legitimate deduction, our client-centered approach ensures you receive personalized guidance focused on your specific situation. We believe that integrity, technical excellence, and genuine care should guide every client interaction, and our service model reflects that commitment.

Starting your tax preparation early gives you more time to resolve issues like missing documents, reduces the risk of costly errors, and provides space for strategic tax planning rather than last-minute urgency. Contact Insero today to schedule a consultation with one of our experienced tax advisors. Let us help you approach this tax season with clarity, confidence, and the peace of mind that comes from working with a firm committed to delivering The Highest Standard.