Recordkeeping for the 2026 Deductions

A deduction you cannot document is a deduction you may not be able to keep if the IRS asks. The new 2026 deductions from the One Big Beautiful Bill Act (OBBBA) each rest on a specific paper trail: pay stubs, W-2 boxes, a Form 1098 statement, and vehicle paperwork. This guide lists, deduction by deduction, which records substantiate the amount and where each number comes from. Keeping these organized during the year is far easier than reconstructing them at filing time. For what the deductions are, start with the pillar guide.

Overtime: pay stubs and the W-2

The overtime deduction is only the premium "half" of time-and-a-half pay, not the full overtime wage, so your records need to isolate that premium. Pay stubs are your running evidence: they typically show overtime hours and the overtime rate, which let you compute the premium (the amount your overtime rate exceeds your regular rate). At year end, employers report wage information on Form W-2, and the IRS has been implementing reporting to capture qualified overtime for this deduction. Keep every pay stub and match the year-end total to your W-2. Our companion piece on adjusting your paycheck, withholding and estimated taxes, explains why these same records also help you set withholding.

Tips: daily records and reported amounts

Tips have a long-standing recordkeeping regime that OBBBA builds on. The IRS expects tipped workers to keep a daily record of tips received, and tips are reported to employers and then reflected on the W-2 and on the employer's payroll reporting. IRS guidance on tip reporting, available on IRS.gov, describes the daily log and the reporting forms. For the deduction, you want records that establish the amount of qualified tips: your daily tip log, your reported tips, and the W-2 figures. Remember that tips remain subject to Social Security and Medicare tax even though the income tax deduction applies, so the records serve both purposes.

Car loan interest: Form 1098 and vehicle documents

The vehicle interest deduction has the most document-heavy substantiation because it depends on facts about both the loan and the car. Lenders report qualifying interest on a Form 1098 statement (described as Form 1098-VLI in guidance for this deduction) when the interest reaches the reporting threshold, with transition relief allowing a lender statement in the early period. Keep that statement, plus the loan agreement showing the origination date and that the loan is secured by the vehicle. For the vehicle itself, keep documentation of the vehicle identification number (VIN) and the evidence of US final assembly, such as the window sticker, because those are eligibility facts you may need to show. The VIN goes on your return.

Senior deduction: proof of age and income

The senior deduction needs the least documentation because it turns on age and income rather than a transaction. Your date of birth establishes that you reached 65 by year end, and your return already reports the modified adjusted gross income that drives the phaseout. Keep whatever supports your MAGI figure, since the deduction shrinks as income rises. The full rules are in the senior deduction explained.

How long to keep records

The IRS sets general guidance on how long to keep tax records, which for most returns is at least three years from filing, and longer in certain situations. Because the OBBBA deductions are new and involve figures that may draw questions, keeping the supporting records for the longer end of that range is prudent. Store digital copies of pay stubs, W-2s, the Form 1098 statement, and vehicle paperwork so a lost paper document does not cost you the deduction. Confirm the current retention guidance on IRS.gov.

A simple filing system

Create one folder per deduction for the year. Drop each pay stub in as it arrives, add the W-2 when it comes, save the lender's interest statement and loan documents together, and note your date of birth and MAGI worksheet for the senior deduction. When you file, each folder should contain everything needed to justify that line. If your income might touch a phaseout, keep the income records that establish your MAGI, since that determines how much of each deduction survives. The calculators linked from the hub home page can turn these records into an estimate.

Reconciling your records to your return

Good records do more than defend a deduction; they let you catch errors before you file. When your W-2 arrives, compare its overtime and tip figures to your own pay-stub and daily-log totals. If they disagree, sort out why before the return goes in, because an employer reporting error is far easier to fix in February than after filing. For the vehicle deduction, check that the interest shown on the lender's statement matches your loan records and that the statement reflects a full year if you held the loan all year. Reconciliation is a fifteen-minute habit that prevents the two worst outcomes: claiming more than you can support, or leaving money on the table because a form understated your qualifying amount.

Special care for the vehicle deduction

The vehicle interest deduction deserves extra attention because it depends on eligibility facts that are checkable but easy to lose. The US final-assembly requirement is tied to the vehicle, so save the window sticker and any documentation that records the assembly location, along with the VIN you will report on the return. Keep the original loan agreement, not just a payment history, because the origination date and the fact that the loan is secured by the vehicle are both conditions of the deduction. If you refinance, keep the new agreement too and confirm whether the refinanced loan still qualifies. These are the records most likely to be requested, precisely because the deduction is narrow, so store them as carefully as the interest statement itself.

General information, not tax advice

This article is general information about recordkeeping for the 2026 deductions and is not tax advice. Reporting forms, substantiation expectations, and record-retention periods are set by the IRS and can change. Confirm the current requirements at IRS.gov and consult a qualified tax professional about what documentation your specific return requires.