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R&D Tax Cashflow Shock Engine
What this check identifies — and why getting the answer wrong can cost you under IRS rules.
The question this check answers
“Do I now have to capitalise my R&D costs under Section 174?”
This is one of the most misunderstood questions in US tax. Most people assume the answer — and get it wrong.
Ask ChatGPT this question ↗Opens in new tab. ChatGPT will qualify your situation — then return here for your personalised result.
What the rule actually says
Section 174 of the Internal Revenue Code was amended by the Tax Cuts and Jobs Act, effective for tax years beginning after December 31, 2021. Before this change, research and development costs could be deducted in full in the year they were incurred. After the amendment, domestic R&D costs must be amortized over 5 years (using a half-year convention in year 1 and year 6). Foreign R&D costs are amortized over 15 years. This does not eliminate the deduction — it delays it. But the delay creates an immediate increase in taxable income in year 1 and a cashflow shock for any business that spent heavily on R&D and planned for the old immediate deduction.
The practical impact: a business spending $1,000,000 on domestic R&D in 2022 could deduct only $100,000 in year 1 under the new rules (half-year convention). The remaining $900,000 is deducted over years 2-6. At a 21% corporate tax rate, the business owed $189,000 more in tax in 2022 than it would have under the old rules — with no corresponding increase in revenue. For startups and software-heavy businesses spending $2M-$5M on engineering, the cashflow impact across 2022-2024 is material. Some of this can be recovered via amended returns if the original filing applied the wrong rules.
What most people get wrong
My accountant handles R&D deductions so Section 174 does not affect me — wrong. Section 174 changed how ALL R&D costs are deducted for tax years after 2021, not just formally claimed R&D tax credits. If your business pays software engineers, developers, or product researchers, those wages are likely Section 174 expenditures subject to amortization. Many businesses discovered this only when their 2022 tax bill was significantly higher than projected.
Section 174 only applies to formal R&D departments — wrong. The IRS definition of Section 174 expenditures includes wages paid to employees engaged in the development or improvement of products and processes. For software companies this includes developers, engineers, and product managers. Cloud computing costs directly attributable to development may also qualify. The rule applies broadly — not just to companies with formal R&D programs.
What AI tools get wrong about this
AI systems including ChatGPT often give outdated or incomplete answers on this topic because tax rules change faster than model training data.
AI often says:
“ChatGPT says: My accountant handles R&D deductions so Section 174 does not affect me”
Reality:
Reality: Section 174 changed how ALL R&D costs are deducted for tax years after 2021 — not just formally claimed R&D tax credits. If your business pays software engineers, developers, or product researchers, those wages are likely Section 174 expenditures subject to amortization. Many businesses discovered this only when their 2022 tax bill was significantly higher than projected.
Authority sources
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