R&D Costs Are Immediately Deductible Again — and Small Businesses Have Until July 6, 2026 to Amend

For a few painful years, businesses that spent money developing products or software got a nasty surprise at tax time: instead of deducting those costs right away, they had to spread the deduction over five years. It hit software startups and small product companies especially hard, sometimes creating tax bills on money they’d already spent. The One Big Beautiful Bill Act reversed it — and for small businesses, there’s a retroactive fix with a hard deadline.

What Changed Under Section 174A

OBBBA created a new Section 174A that restores immediate expensing for domestic research and experimental (R&E) expenditures. For tax years beginning after December 31, 2024, you can deduct those costs in the year you pay or incur them, rather than amortizing them over five years. The change is permanent — no sunset date to worry about.

Crucially for a lot of small businesses, software development counts. Amounts paid or incurred for developing software domestically are treated as R&E expenditures eligible for immediate expensing. (Foreign software development still faces 15-year amortization, and teams split between domestic and foreign work require an allocation — so where the work happens matters.)

The Retroactive Relief — and the July 6, 2026 Deadline

Here’s the time-sensitive part. Eligible small businesses — generally those with average annual gross receipts of $31 million or less — can apply the new rules retroactively by amending their 2022, 2023, and 2024 returns to deduct R&D costs they were previously forced to capitalize. That can mean real refunds for money already spent.

But the election to do this has a deadline: July 6, 2026. For all taxpayers, there’s also a transition option to deduct any remaining unamortized domestic R&E costs entirely in 2025, or spread across 2025 and 2026.

If your business spent money on product or software development in the last few years, this is worth a conversation with your tax professional soon — the retroactive window closes, and it doesn’t reopen.

Why This Puts a Premium on Clean Records

Whether you’re claiming immediate expensing going forward or amending prior years for a refund, the same thing determines whether you can actually capture the benefit: documentation. To deduct R&D and software development costs, you need records showing what was spent, when, on what, and — because of the domestic-versus-foreign rules — where the work happened.

This is exactly the sort of expense that gets lost without a system. Development costs often come as a scatter of contractor payments, software subscriptions, and tool purchases across the year. If they’re not captured with a date, an amount, and a clear category as they happen, reconstructing them later — especially for an amended return covering 2022 through 2024 — is painful and error-prone.

Track Development Costs as You Spend Them

A simple, consistent expense log is what turns a favorable law into an actual deduction. Our Small Business Tax Deduction Tracker gives every business expense a dated home with a category, so research, development, and software costs are captured the moment they happen rather than reconstructed under deadline pressure. Its Expense Log carries pre-built deductible categories, backed by a Dashboard, a Mileage Log at the 2026 rate, a Home Office calculator, and a Quarterly Taxes tab — so your development spending sits right alongside the rest of your write-offs.

It runs in both Excel and Google Sheets, which means whether your accountant is filing 2026 forward or amending prior years, the numbers are already logged, dated, and totaled.

Immediate R&D expensing is back and permanent — a meaningful win for anyone building products or software. Turning it into money in your pocket, especially for those retroactive years before the July 6, 2026 deadline, comes down to having the records to prove what you spent.

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