Taxpayers who requested a six-month extension back in April have until October 15, 2026, to file their 2025 federal return, and this year that return carries something entirely new. The 2025 filing is the first to use IRS Schedule 1-A, a form created to claim four deductions enacted under the 2025 tax law: no tax on qualified tips, no tax on qualified overtime, a deduction for car-loan interest, and an enhanced deduction for people 65 and older. For older filers who stretched their deadline, the remaining weeks are a chance to capture breaks that did not exist a year ago, provided the paperwork is completed correctly.
The October 15 deadline, and what it does and doesn’t extend
An extension buys time to file, not time to pay. The automatic six-month extension requested by the April deadline moves the filing date to October 15, but any tax owed was still due in the spring, and interest and late-payment penalties have been accruing on unpaid balances ever since. A filer who expects a refund faces no penalty for waiting, while one who owes should file and pay as soon as possible to stop the meter from running further.
The date is firm. The IRS has reminded taxpayers to act ahead of the filing deadline rather than let it slip, because a return filed after October 15 without a valid reason can trigger a failure-to-file penalty that is far steeper than the penalty for paying late. For most people the practical move is to gather documents now, especially since the new deductions require records that a rushed October filing can easily miss.
There are narrow exceptions to the deadline. Taxpayers in federally declared disaster areas, members of the military serving in combat zones, and citizens living abroad may have additional time, but those are specific carve-outs rather than a general grace period. Everyone else should treat October 15 as the last day the 2025 return can be filed on time.
Inside Schedule 1-A: four new deductions
The centerpiece of this filing season is a single new form. According to the IRS, Schedule 1-A consolidates four deductions in one place, and it is attached to a Form 1040, 1040-SR or 1040-NR when filing a 2025 return. Crucially, all four can be claimed whether a taxpayer itemizes or takes the standard deduction, which widens the pool of people who benefit well beyond those who normally itemize.
The tip and overtime breaks target working income. Employees in occupations that customarily receive tips may deduct up to $25,000 of qualified tip income, while workers who log extra hours may deduct up to $12,500 of qualified overtime pay, or up to $25,000 for a married couple filing jointly. Both deductions require the income to be properly reported on a W-2, 1099 or similar statement, and both carry income phaseouts that shrink the benefit at higher earnings.
The car-loan and senior provisions reach further into retirement households. Taxpayers who took out a loan to buy a new vehicle for personal use may deduct up to $10,000 of interest, but only if the loan originated after December 31, 2024, the vehicle secures the loan through a first lien, and the vehicle identification number is reported on the form. Separately, filers who are at least 65 can claim an enhanced senior deduction of up to $6,000, rising to $12,000 when both spouses are 65 or older and file jointly.
What older filers should check before submitting
The deductions are generous, but they are also precise, and a mismatch can slow a return or cost part of the break. Each provision phases out as income climbs, so a retiree with substantial withdrawals, a pension and Social Security in the same year may find the senior deduction or the car-loan interest deduction reduced. The IRS lays out the eligibility rules and phaseout thresholds in its broader summary of the law’s individual tax provisions, which is worth reviewing before the return is finalized.
Documentation is where extension filers gain an edge. Anyone claiming car-loan interest needs the loan paperwork and the vehicle identification number on hand, and anyone claiming the tip or overtime deduction needs statements that clearly separate that income. Because the deductions are new, some tax software and preparers have only recently incorporated Schedule 1-A, so double-checking that the form is present and completed is a reasonable final step.
Filers who already submitted a 2025 return before the new form was in wide use are not necessarily out of luck. A taxpayer who overlooked one of the four deductions can generally file an amended return to claim it, though that route takes longer to process than getting the original return right. For extension filers still holding their paperwork, the simpler course is to confirm every eligible deduction is captured on Schedule 1-A before the deadline rather than fixing it afterward.
The deductions are not a one-year event. The 2025 law makes these four breaks available for tax years 2025 through 2028, so households that miss part of the benefit this year can plan around it for the returns to come. For now, the open question for extension filers is a simpler one of discipline: whether they use the weeks left before October 15 to assemble the records these new deductions demand, or file in haste and leave money on the table that the law was written to let them keep.
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This article was researched and drafted with the assistance of AI and reviewed by The Money Overview editorial team.
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