If your business spent money on research and experimentation between 2022 and 2024 — building software, developing a new product formulation, testing a manufacturing process, or writing custom code for internal use — there's a good chance you overpaid your taxes for three straight years without realizing it. A quirk of the 2017 Tax Cuts and Jobs Act forced businesses to capitalize and slowly amortize those costs instead of deducting them immediately, and most small business owners never found out until their accountant delivered the bad news at filing time.
The One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, fixed the going-forward problem and opened a one-time window to fix the past. That window — a retroactive election letting qualifying small businesses recover the 2022–2024 amortization all at once — closed on July 6, 2026. If you're reading this after that date and never filed, you may feel like you missed the boat entirely. You didn't. There's still real money on the table, plus decisions to make about how you handle research costs from here forward. Here's what actually happened, what your options still are, and how to avoid repeating this mistake with 2025 and 2026 costs.
A Quick Recap: Why This Rule Existed at All
Section 174 of the tax code has governed research and experimental (R&E) expenses for decades. Before 2022, most businesses could deduct these costs in the year they were incurred — straightforward, cash-flow-friendly, and intuitive. The 2017 tax law changed that starting with tax years beginning after December 31, 2021: domestic R&E costs had to be capitalized and amortized over five years (fifteen years for costs attributed to foreign research), rather than expensed immediately.
For a lot of small businesses this change was invisible until it wasn't. A software company that spent $200,000 on engineering salaries in 2022 couldn't deduct that $200,000 that year — instead it deducted roughly $20,000 (half a year's worth of a five-year schedule) and carried the rest forward. Multiply that across three tax years and you get businesses sitting on large amounts of "phantom income" — taxable profit on paper that didn't match the cash actually in the bank.
OBBBA restored immediate expensing for domestic R&E costs for tax years beginning after December 31, 2024, through a new Section 174A. It also gave smaller businesses a mechanism to go back and undo the 2022–2024 damage.
Who Qualified for the Retroactive Fix
The retroactive election was available to "small business taxpayers" — defined by the same gross receipts test used elsewhere in the tax code. Your business qualified if its average annual gross receipts, measured over the three-tax-year period ending before the election year, came in at $31 million or less (the 2025 inflation-adjusted threshold). Aggregation rules apply if you have related entities, so a group of commonly owned businesses had to test the combined total, not each entity separately.
Businesses above that threshold weren't left out entirely — they got a separate, non-retroactive option to accelerate whatever unamortized 2022–2024 R&E costs they still had left on the books, taking the remaining deduction either all in 2025 or split between 2025 and 2026. That mechanism isn't tied to the same July 6 cutoff and is worth revisiting with your accountant if it applies to you.
What the July 6, 2026 Deadline Actually Covered
The retroactive small-business election had to be made within one year of OBBBA's enactment — hence July 6, 2026 (July 4 fell on a weekend, pushing the deadline to the next business day). Making the election meant filing amended returns (Form 1040-X for sole proprietors and individual partners, Form 1120-X for corporations) or an Administrative Adjustment Request for partnerships, for each affected year — 2022, 2023, and/or 2024 — along with a statement electing retroactive Section 174A treatment.
The filing also touched several other forms: Form 6765 to adjust the research credit calculation, Form 4562 if depreciation and amortization schedules needed correcting, and in some cases Form 3115 or a statement in lieu of it to formalize the accounting method change, following the procedures the IRS laid out in Revenue Procedure 2025-28.
Crucially, the IRS also reminded taxpayers that this special one-year window didn't override the normal refund statute of limitations under IRC Section 6511 — generally three years from when a return was filed or two years from when tax was paid, whichever is later. That meant some businesses actually faced an earlier practical deadline than July 6 for their 2022 tax year specifically, since a return filed in early 2023 could have already fallen outside the standard refund window before the special deadline even arrived.
If You Missed It, Here's What's Still True
The window for retroactively electing 2022–2024 immediate expensing under OBBBA's small-business provision is now closed. That specific mechanism required action by July 6, 2026, and it isn't coming back.
That doesn't mean every avenue for those years is gone:
- Standard R&D tax credit claims still follow the normal three-year statute of limitations, independent of the OBBBA retroactive election. If you never claimed the federal R&D credit (a dollar-for-dollar reduction in tax liability, separate from the Section 174 deduction question) for a year that's still open under the ordinary rules, that claim may still be available. Check with a tax professional on exactly which years remain open for your business.
- Your amortization schedule for 2022–2024 costs doesn't disappear — you're still deducting those costs, just on the original 5-year (or 15-year, for foreign research) schedule instead of getting them all at once. You didn't lose the deduction; you lost the acceleration.
- 2025 forward is unaffected by missing the deadline. Section 174A's immediate expensing for domestic research costs applies automatically to tax years beginning after December 31, 2024, regardless of whether you made any retroactive election. This is the part of the law most businesses will actually live with day to day, and it's worth getting right.
What to Do Right Now
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Confirm whether you actually had qualifying R&E costs in 2022–2024. A lot of businesses assume "research and development" means a lab coat and a patent filing. In practice it also covers software development (including internal-use software under certain conditions), new or improved product formulations, engineering prototypes, and process-improvement testing. If any of that happened and you weren't already claiming the R&D credit, it's worth a conversation with a CPA who specializes in this area — even outside the OBBBA retroactive window, there may be credit claims or method-change opportunities still open.
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Get your books ready for 2025 and beyond. The biggest practical shift from OBBBA isn't the one-time catch-up — it's that domestic R&E costs are immediately deductible again, permanently. That only helps you if your bookkeeping actually separates R&E spending from general operating expenses. If "engineering payroll," "software development contractors," and "R&D materials" are all buried inside a single "salaries" or "supplies" account, you and your accountant are stuck reconstructing the number every year at tax time — usually under deadline pressure, usually with some guesswork involved.
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Talk to your accountant about the Section 280C coordination. If you claim the federal R&D credit, the law requires coordinating it with your Section 174/174A deduction so you're not double-dipping — you either reduce the R&E deduction by the credit amount or take a reduced credit. Getting this wrong is one of the more common mistakes tax preparers flag in this area.
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Don't assume "small business" status is permanent. The $31 million gross receipts threshold is tested annually on a rolling three-year average. A strong growth year can push you over the line for future elections and relief provisions, so it's worth tracking where your business sits relative to that number, not just checking it once.
Why Clean, Categorized Books Matter More Than Ever
This whole episode is a good reminder of a pattern that shows up again and again in small business tax planning: the businesses that captured value from a law change quickly were the ones whose books already separated the relevant costs. Everyone else spent March through June of 2026 reconstructing three years of research spending from receipts, contractor invoices, and payroll reports — an expensive, error-prone process that a little upfront categorization would have avoided.
This is exactly the kind of problem plain-text accounting is built for. With Beancount.io, every transaction lives in a version-controlled, human-readable ledger where you define your own account structure — so "R&E: Software Development" or "R&E: Product Testing" can be first-class categories from day one, not a reconstruction project three years later. Because the ledger is plain text, you can query, filter, and export exactly the cost breakdown your tax preparer needs, and every change is tracked in full audit-trail history. Get started for free and see how transparent, developer-friendly accounting makes tax season — and law changes like this one — far less painful. For more on structuring accounts and running reports, see the documentation, and check out Fava for a visual dashboard on top of your ledger.