We do the digging. You get a defensible pack.
Most of the work is automated. Connect once, and Aven turns months of scattered engineering history into a structured evidence pack - without ever touching your source code or filing on your behalf.
Five steps, mostly automated
Connect, read-only
Link GitHub in read-only mode (GitLab, Jira and Linear are planned next). Aven ingests commit messages, PR and ticket text and metadata - redacted at ingestion. Your source code is never stored.
Assemble the evidence trail
We cluster your engineering history into candidate R&D projects and draft each narrative - field of technology, baseline, advance, uncertainty, approach - with every claim wired back to the commit, PR or ticket that proves it.
Model the qualifying cost
We build a conservative qualifying-expenditure model across the categories HMRC recognises - staff, externally-provided workers and subcontractors (restricted), consumables, software, and data & cloud - apportioned to R&D.
Choose Draft or Reviewed
Draft gives your accountant an organised pack. Reviewed adds a competent-professional review, clearer explanations and weak-area flags before delivery.
Hand-off - not filing
You receive a technical report, adviser workbook, normalized data exports, methodology and checksum manifest. Your accountant or R&D tax firm independently reviews them, submits the AIF and handles the company tax return, scheme, liability and final amount.
No pack reaches you without Aven approval. Reviewed adds expert sign-off.
Automation drafts; a person controls delivery. Draft is for teams whose accountant will review the output. Reviewed adds the R&D expert layer: narrative improvement, evidence checks and weak-area flags before you send it on.
What you receive
A structured bundle aligned to HMRC’s Additional Information Form - company & period header, candidate projects with linked evidence, a qualifying-expenditure model, and the scheme-determining data your firm needs. Reviewed packages add reviewer notes and weak-area flags. See what’s in the pack
Aven assembles R&D evidence packs for accountant review; Aven Reviewed adds expert review. Aven does not file with HMRC, determine your liability, select your scheme (merged vs ERIS), sequence loss relief, or guarantee any amount - those are your accountant or R&D tax firm's responsibility. Figures are indicative and conservative. Nothing here is tax advice. UK only.
See if you have a defensible claim.
The Eligibility & Readiness assessment is free, takes a few minutes, and tells you honestly whether Aven is the right fit.
Check your eligibility - free