Your code did the R&D.
We build the proof.
You may be owed money for work you’ve already shipped. Aven builds the evidence that claims it.
At Aven, we don't write your R&D story - we assemble the proof of it. Every claim line in the pack traces back to a commit, PR or ticket your team already wrote.
Read-only by design. We read commit, PR and ticket text - never your source code, and secrets are redacted at ingestion.
There’s money in your repo.~£160k
The average claim
UK companies claimed £7.6bn of R&D relief in 2023-24 - roughly £160,000 per claim - and plenty of qualifying software work still goes unclaimed.
The climate your claim files into, in numbers
R&D relief claimed from HMRC in 2023-24
R&D claims made across the UK that year
of claims HMRC compliance-checked in 2023-24
of SME claims held error or fraud at the 2020-22 peak
Source: HMRC R&D Tax Credits Statistics (September 2025) and HMRC’s approach to R&D tax reliefs 2023-24, GOV.UK. Not tax advice.
Signal review
reviewingIllustrative
Does your engineering count as R&D?
The strongest claims come from genuine technical uncertainty - problems a skilled engineer can’t readily solve from known approaches.
Scale & performance
Reliability or speed under hard constraints.
Algorithms & data
Novel algorithms, ML/AI, data or distributed systems.
Hard integrations
Real experimentation, not routine setup.
Platform & security
Infrastructure work with technical uncertainty.
What could your work be worth?
Move the sliders for a deliberately low-balled range - not a quote or tax advice, just a reason to check properly.
Aven does not determine your liability, select your scheme, or guarantee any amount - that’s your tax firm’s role. Final figures depend on an expert’s review.
Based on £260,000 of indicative qualifying staff cost and Aven’s conservative post-2024 merged-scheme range. Your tax firm selects the scheme and determines the final claim. It is not a quote.
One bundle. A clear place to start.
Eight adviser-ready files, organised in one ZIP: a technical report and working papers up front, with supporting data and integrity records neatly behind them.
R&D adviser handoff
Meridian Freight Systems Ltd
Accounting period 2024-04-01 to 2025-03-31
One organised ZIP · 8 adviser-ready files
01·One organised handoff
The readable technical story your adviser opens first, backed by retained records.
Illustrative
02·Technical report
Eight working sheets bring together AIF inputs, costs, allocations, evidence and open decisions.
Illustrative
03·Adviser workbook
- Cost rows
- line by line
- Project allocations
- fully reconciled
- Evidence register
- source-linked
- Legacy model
- compatibility
Illustrative
04·Supporting data
The receiving adviser can verify what was reviewed and which source cut-off it reflects.
Illustrative
05·Methodology & integrity
Swipe through the bundle
One ZIP · 8 files · ready for adviser review
Illustrative - real packs link to your own history
Three steps to adviser-ready evidence.
Connect once. Aven turns the trail into a reviewed evidence pack - filed by your own adviser, or a regulated R&D tax professional we introduce you to.
01
Connect, read-only
Authorise GitHub, GitLab, Linear, Jira, Notion or Confluence - one is enough. We read commit, PR, ticket and document text only.
02
We build and review your pack
Advance, uncertainty and approach - each claim wired to the evidence trail, then checked by a person before release.
03
File it, your way
Hand the pack to your own adviser - or ask us for a free introduction to a regulated R&D tax professional.
Reviewed by a competent personExperts reduce the risk.
Upgrade when you want an R&D specialist to sharpen the story and flag weak points before the pack reaches whoever files your claim.
Uncertainty
The technical uncertainty is clearly explained.
Evidence
Narratives are backed by linked, dated records.
Risk
Weak or risky areas are flagged before hand-off.
The first packs are in their hands.
Real feedback from our founding cohort, shared with permission.
“From connecting our GitHub to holding the finished evidence pack took under two hours. The process barely needed us - and the pack arrived organised the way an adviser actually wants it.”
CTO
Enterprise technology company
“We'd been building proprietary software for years without realising it could qualify. Aven's check surfaced it, the pack made the case, and our claim is now filed through our adviser. We simply wouldn't have known.”
Founder
Private equity firm
“We had shipped a lot of genuinely difficult engineering, but most of it lived across commits, tickets, and old product decisions. Aven helped turn that into a coherent evidence trail without needing our engineers to spend days writing explanations. It made the whole process feel much more professional.”
Founder
AI SaaS company
“Aven saved us from turning R&D evidence into a messy internal project. It pulled the technical work into a clear, accountant-ready pack and helped us explain the “why this was hard” behind the code. The biggest value was confidence: we felt like the claim had proper substance behind it.”
CTO
Fintech startup
“It does exactly what it promises, and the quality of what comes out the other end speaks for itself. I'd recommend Aven to any founder - 100%.”
Founder
Software startup
“The value of Aven was not just saving time, although it definitely did that. It gave us a much stronger evidence base and made the review with our tax adviser far easier. Instead of vague project summaries, we had a structured pack tied back to real engineering work.”
Finance Director
Software scale-up
Feedback from our founding cohort, shared with permission. Roles anonymised.
The things serious teams ask first.
Q01Who is Aven for?
UK software companies whose engineers tackled genuine technical uncertainty - performance, architecture, scaling, data, reliability or similar hard problems.
Q02What do I get after the free check?
If your answers show a defensible path, you can choose a draft evidence pack or add expert review - then file through your own adviser or a regulated R&D tax professional we introduce.
Q03How long does the pack take?
Typically within 10 working days of connecting your tools - we confirm your date when you start, and you see clear status throughout.
Q04Why not just use my accountant?
Your accountant files the claim - Aven builds the technical evidence trail they rarely have time to assemble: narratives, a linked commit and ticket trail, and a conservative cost model, organised the way HMRC's Additional Information Form expects. The pack is made to hand straight to them.
Q05Do you access or store our source code?
Never. Integrations are read-only - we pull commit, PR and ticket text and metadata only, encrypted at rest, and you can disconnect anytime.
Q06Is this automated?
Aven builds your pack from your engineering history and your own account of the work - and nothing is released without passing a human delivery review. Aven Reviewed adds a competent professional's sign-off on top.
Q07Will the numbers be inflated?
No. We're defensible, not maximised. Indicative figures are deliberately conservative ranges. Nothing here is a guarantee, and nothing here is tax advice.
Q08What's the pre-notification deadline?
For most new claimants HMRC must be notified within six months of the accounting period end. A missed window forfeits only that period - if yours has closed we'll say so honestly and scope your pack to a period that's still claimable. Your adviser confirms which.
Q09Do you file my claim with HMRC?
No. Aven assembles defensible evidence for your accountant or R&D tax firm. Filing, liability, scheme selection and loss relief remain their responsibility.
Free eligibility & readiness check
See whether your work is defensible.
About 3 minutes. Read-only, no card, no commitment. UK companies only.
read-only · source code never stored · not tax advice