What Venture-Backed Founders Need to Know About Section 174 R&D Capitalization
Sam's List Editorial | 2026-06-23
What Venture-Backed Founders Need to Know About Section 174 R&D Capitalization A handful of pre-revenue startups burned $2 million in 2022 and got a tax bill anyway. Not a small one. They had no profit, no exit, no cash coming in the door — and the IRS still wanted money. The culprit was a quiet change to Section 174 R&D capitalization that turned a normal startup expense into a tax-timing trap. Most founders never saw it coming, because their accountant didn't either. That rule has since been amended. But the trap isn't fully gone, the cleanup is messy, and the deadline to claim a refund is closing fast. Here's what actually happened, what the law says today, and what a venture-backed founder should do about it. The expense most founders don't realize is "R&D" Section 174 of the Internal Revenue Code governs how research and experimental (R&E) expenditures are treated for tax. The word "research" makes founders picture a lab. The IRS means something much broader. For most software companies, the single largest Section 174 item is engineer salaries. If your team writes code to build or improve your product, those wages are R&E expenditures — which is why software development capitalization tax rules now apply to companies that never thought of themselves as doing "research." So are contractor dev costs, cloud spend tied to development, and a slice of related overhead. That matters because for decades, you could deduct all of it the year you spent it. Spend $2M on engineering, deduct $2M, simple. Then the rule flipped. How Section 174 R&D capitalization hit startups out of thin air The 2017 Tax Cuts and Jobs Act included a delayed provision that took effect for tax years beginning after December 31, 2021. Starting then, you could no longer deduct R&E costs immediately. You had to capitalize and amortize them — 5 years for domestic work, 15 years for anything done abroad. Here's why that wrecked startups. Amortization with a mid-year convention means you only deduct a fraction in year one. Consider a company that spent $2M on domestic engineering with no revenue. Under the old rule: $2M deduction, zero taxable income. Under the 2022 rule: only about $200K deductible in year one, leaving roughly $1.8M of "taxable income" on a company that earned nothing. At a 21% rate, that's a real cash tax bill near $378K — for a business actively losing money. That's the trap. R&D amortization hits cash-burning, R&D-heavy startups hardest, which is the exact profile of a venture-backed company. What the law actually says in 2026 This is the part you have to get right,...
