The judgement layer for UK contractor compliance.
IR35 isn't admin — it's judgement-heavy compliance contractors can't afford to get wrong. Nebula is the narrow, auditable infrastructure that automates the judgement call incumbents leave manual, starting with IR35. This is the short version; the full seed memo — financial model, valuation and pipeline — lives in the data room.
FCCA-founded · FCA-regulated referral partner · backed by experienced fintech operators
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IR35 is judgement, not bookkeeping — and judgement is what software hasn't touched.
Every contractor is a one-person business carrying liability-heavy compliance: IR35 status, PSC posture, and the evidence to defend both. Accountants handle it manually at premium rates; generic bookkeeping tools categorise transactions but never interpret posture, contract risk, or IR35 status. Nebula turns nearly a decade of founder scar tissue into narrow, auditable compliance infrastructure — solving the hardest problem first, earning the trust and the data, then expanding across the contractor's financial life.
"We win the hardest compliance problem first — IR35, the judgement call contractors fear most — and use it as the wedge to the full PSC stack."
What an investor needs to know at a glance.
£254M UK SAM
A bottom-up serviceable market inside a ~£15B UK accounting-software & SMB-compliance space. Full five-year model and capture in the data room.
IR35 Hub live · June 2026
Status determination + HMRC-aligned evidence pack + versioned audit trail. A full PSC suite (SA, CT, VAT, payroll) runs in alpha behind it.
Early but real
40+ pre-signups, an active PMF cohort on weekly calls, and Broadbench — an FCA-regulated broker — as IR35-Hub launch partner.
FCCA-grade + auditable
Per-factor IR35 reasoning with a defensible evidence pack — exactly the judgement call free bookkeeping bundles leave on the table.
Market figures are illustrative estimates, not forecasts of Nebula's performance. The raise, valuation, five-year model, full pipeline and risks are in the confidential data room — available on request.
We're raising a seed round to launch and prove commercial traction.
The round production-hardens the four compliance engines, ships mobile filing, launches the IR35 Hub, and proves unit economics on the first paying cohorts. Full terms, the five-year model, use of funds and the data room are available on request.
"Contractor compliance is becoming software infrastructure — not a service-heavy margin stack. We're building the layer that owns the judgement call."
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