Helps tech founders who just raised turn engineering payroll into R&D-credit cash: estimate it, prove it from GitHub, and file it on time.
tfar5.github.io/founderfunds · github.com/tfar5/founderfunds
Why now: the payroll election only counts on a return filed on time; the offset is limited to your first 5 revenue years; Form 6765 Section G requires project detail from tax year 2026; and missed years expire after about 3 years.
| Source | Used for | Limitation we show on screen |
|---|---|---|
| IRS SOI Form 6765 tables | Who claims, growth 2015–2022, size gap (2013) | C-corps only; size breakdown last published for 2013 |
| USAspending.gov API (live) | SBIR/STTR and NSF/NIH awards by state and county | Keyword proxy, not official SBIR totals; cached fallback with a badge |
| Grants.gov Search API | Open opportunities by vertical | Browser blocked by CORS, so we show a dated snapshot |
| GitHub REST API (live, with consent) | Commit evidence for each project | Public repos; 60 requests an hour without sign-in; sample fallback |
| Census County Business Patterns | Pool of R&D-intensive businesses | Establishments, not firms; industry is not eligibility |
| NSF HERD / NCSES | University research context | Correlation, not causation |
| State credit table | 21 states' rules (CA, TX, MI updated for 2025–26) | No public API; hand-compiled, verify yearly |
Badges mark every figure as live, snapshot or modeled.
data.js.Roughly $1.5M–$20M of research spend and $90K–$1.2M of credit a year. Under $5M revenue, so the payroll offset applies. Too small for Big 4 firms. Distribution through VCs, accelerators, payroll providers and startup banks.
Flywheel: free estimate → connect tools → records build themselves → cash arrives → real outcomes sharpen estimates and underwriting → VC portfolios bring the next cohort.
Not tax advice. Estimates use public rules and data; confirm with a CPA.