For the past few years, businesses investing in research and development faced an unexpected hurdle—they couldn’t fully deduct those costs upfront. Instead, expenses had to be spread out over years, locking up cash and complicating tax planning.
That has now changed.
With the introduction of the One Big Beautiful Bill Act (OBBBA), signed on July 4, 2025, the rules around R&D tax treatment have been fundamentally reshaped. And for many businesses—especially smaller ones—this opens up immediate refund opportunities and long-term tax savings.
What Changed—and Why It Matters
Under earlier rules introduced by the Tax Cuts and Jobs Act (TCJA), businesses were required to capitalize and amortize domestic R&D costs over five years starting in 2022.
The OBBBA reverses this through a new provision—Section 174A—allowing full expensing of domestic R&D costs.
This isn’t just a technical correction. It’s a cash flow opportunity.
The Big Opportunity: Retroactive Tax Benefits
If your business qualifies as a small business (average annual gross receipts of $31 million or less), you can go back and fix past filings.
This means:
- Amending tax returns for 2022, 2023, and 2024
- Claiming deductions that were previously spread over multiple years
- Potentially generating tax refunds and additional liquidity
In many cases, businesses may also create or increase net operating losses (NOLs), which can be used to offset future taxable income.
However, timing is critical.
You must file amended returns before July 6, 2026, or earlier if the statute of limitations applies.
What Happens from 2025 Onwards
Starting in 2025, the rules become simpler—and more favourable.
All businesses can:
- Fully deduct domestic R&D expenses in the year incurred
- Or choose to capitalize and amortize if it aligns better with long-term tax planning
Additionally, any unamortized R&D costs from 2022–2024 can be:
- Fully deducted in 2025, or
- Spread across 2025 and 2026
One important distinction remains:
Foreign R&D expenses still need to be amortized over 15 years.
Key Strategic Decisions You Need to Make
This isn’t just about claiming deductions—it’s about optimising timing.
If You’re Profitable
Accelerating deductions can:
- Reduce taxable income immediately
- Improve short-term cash flow
But you’ll need to consider interactions with:
- Interest limitation rules (Section 163(j))
- Research credit adjustments
- Other tax attributes like depreciation
If You’re Not Yet Profitable
Acceleration may not always be beneficial.
Why?
- NOLs can only offset 80% of future income
- Excess deductions today may not deliver full value later
In some cases, spreading deductions could lead to better outcomes when profitability increases.
For Partnerships and S Corporations
The situation becomes more complex due to:
- Partner-level limitations
- AMT adjustments
- Special filing requirements for retroactive elections
Coordination across stakeholders is essential before making any decisions.
What You Should Do Right Now
To fully leverage this change, businesses need a structured approach:
- Assess eligibility based on revenue thresholds
- Identify unamortized R&D costs from 2022–2024
- Model tax scenarios across multiple years
- Check statute deadlines, especially for 2022 filings
- Evaluate state-level tax impact, as not all states follow federal rules
This isn’t a one-size-fits-all decision. The right approach depends on your profitability, growth plans, and tax position.
How We Help You Maximise This Opportunity
At Accelus, we go beyond compliance—we help you strategically unlock value from tax changes like Section 174A.
We support you with:
- End-to-end review of your R&D cost structure
- Identification of refund opportunities for prior years
- Multi-year tax modelling to optimise deductions
- Filing support for amended returns and elections
- Ongoing planning to align tax strategy with growth
The goal isn’t just to save tax—it’s to improve cash flow and decision-making clarity.
Your Next Step
If you’ve invested in R&D over the last few years, this is a time-sensitive opportunity you can’t afford to ignore.
👉 DM us to evaluate your refund potential and tax savings
👉 Or connect with us to build a tax strategy aligned with the new Section 174 rules
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