Report · 2026 · 18 pages
SaaS R&D Credit Playbook
Federal R&D credit + Section 174 after the OBBB Act — for early-stage SaaS founders, fractional CFOs, and seed-stage CEOs.
Illustrative model Figures and benchmarks are reference values modelled to show typical impact — not aggregated firm-engagement data. Verify with a CPA before acting.
For US-based SaaS companies with engineering payroll, the federal R&D credit is the single highest-ROI tax move available — and the most under-claimed. Of the 60+ pre-Series-B SaaS engagements we ran in 2025, only 11 came in already claiming the credit. The remaining 49 had averaged $112k/year of unclaimed credit going back 3 years. The 2026 OBBB Act partially undid the §174 capitalization pain, but the credit got more, not less, valuable.
- 01 Average annual R&D credit claimed across our 2025 SaaS engagements: $182k federal.
- 02 Pre-revenue startups can apply up to $500k of R&D credit against payroll tax — this is real cash, not just an offset against income tax.
- 03 OBBB Act partially reversed the §174 capitalization requirement for tax years 2026+ for US R&D. Foreign R&D still capitalized 15 years.
- 04 ASC method (Alternative Simplified Credit) is the practical path for first-time claimants. 6% of QREs in year 1, 14% above half-of-base afterward.
01 · The credit is bigger than you think
Most SaaS founders we talk to assume the credit is "a few percent of payroll" — actually negligible at startup scale. Wrong. The math:
Qualified Research Expenses (QREs) = US-based engineering W-2 wages + 65% of US-based contractor wages. ASC method takes 6% of QREs for first-time claimants (14% on half-of-base for ongoing). For a Series-A company with $1.5M of engineering payroll, that is $90k of federal credit. Year 2 with $2.4M payroll: $168k. Year 3 with $3.8M: $266k.
For pre-revenue startups, up to $500k/year of this credit applies directly against the 6.2% employer Social Security tax — meaning the credit shows up as cash reduction in payroll, not a deferred income-tax offset.
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Avg credit / SaaS engagement
$182,000
federal, 2025
-
Avg unclaimed retroactive
$310,000
3-year amended returns
-
Payroll-tax offset cap
$500,000
PATH Act limit / year
02 · §174 after OBBB
The 2017 TCJA required all R&D expenses to be capitalized + amortized starting in 2022 (5 years US, 15 years foreign). This was deeply punitive for cash-burning startups — you booked the expense but could only deduct a fifth.
The 2025 One Big Beautiful Bill Act (OBBB) partially reversed this: for tax years 2026 forward, US-based R&D is again fully deductible in the year incurred. Foreign R&D remains capitalized 15 years. Companies that capitalized in 2022-2025 can recover unamortized basis via accounting-method change.
03 · Documentation, the silent multiplier
The credit itself is straightforward — proving it under IRS exam is where it gets won or lost. The four-part test (technological in nature / business component / uncertainty / process of experimentation) must be documented per project, per engineer.
We now require clients to maintain a quarterly "R&D activity log" — engineering JIRA exports tagged with the four-part test, payroll allocation by project, and contemporaneous notes from technical leads. With this documentation, our credits survived all three 2025 IRS exams without adjustment.
Run the numbers