Your entire tax-prep workflow, automated from intake to e-file.
What it is
What is the AI CPA & Tax Engine?
The AI CPA & Tax Engine is a multi-agent system purpose-built for US accounting firms. It handles the labour-intensive stages of tax prep — document collection, classification, data extraction, gap detection, and return population — autonomously, while leaving professional judgement and sign-off to the CPA.
Think of it as a senior staff accountant who has already processed all 42 of a client's documents, extracted every W-2 box, verified every 1099-B lot, identified the missing K-1, and handed you a pre-built file with a punch-list — before you sit down. The engine does not file anything. You do, after reviewing what it prepared.
This matters legally: under the revised AICPA Statements on Standards for Tax Services (effective January 1, 2024), the signing CPA is personally responsible for the completed return, regardless of what tools prepared it. The engine is designed around that constraint — not against it.
How it works
How the CPA & Tax Engine works, step by step
Six specialised agents work in sequence, each handing structured data to the next. Each stage is purpose-built for its document type — a K-1 extraction agent trained on Boxes 1–20 of Schedule K-1 (Form 1065) outperforms any general-purpose OCR model on the same data.
- 01
Document Intake
Connects to wherever your clients submit documents — TaxDome, SmartVault, SharePoint, Google Drive, Box, or Dropbox. Every file is pulled, deduplicated, and queued for classification. No one opens a folder. No manual upload. A timestamped intake record is created before any human touches the file.
What you get Complete, timestamped document record per client — before a preparer opens the file.
- TaxDome
- SmartVault
- SharePoint
- Google Drive
- Box
- 02
AI Classification
Every document is identified and tagged by type — W-2, 1099-INT, 1099-DIV, 1099-B composite, K-1 (Form 1065), K-1 (Form 1120-S), Schedule E, prior-year return, organizer, receipts. The classifier is trained on the specific visual and structural signatures of tax documents, not a generic document model.
What you get A labelled document set, sorted by type, with any unrecognised files flagged for human review.
- W-2
- 1099-B / DIV / INT
- K-1 (1065 / 1120-S)
- Schedule E
- Brokerage composite
- 03
Field Extraction & Verify
Each document class routes to a specialist extraction agent — W-2 Box 1 through Box 20, every 1099-B lot, K-1 Boxes 1–20 for partnership returns. After extraction, an ML verification pass compares each value against the PDF text layer and flags low-confidence reads rather than silently accepting them. Nothing is quietly wrong.
What you get Extracted data with a confidence score per field and a flagged-items list. Low-confidence reads surface for review, not into the return.
- OCR engine
- ML verifier
- PDF text layer
- Confidence threshold
- 04
Gap Detection
Cross-references the extracted document set against the prior-year return and engagement organiser. Missing K-1 from a partnership that filed an extension? Foreign account in the prior return not in this year's organiser? Each gap generates a targeted client reminder via your practice management system — with context, not a generic "please send documents" email.
What you get A gap report per client and automated reminders through TaxDome, Karbon, or Canopy. You stop manually tracking who owes what.
- TaxDome
- Karbon
- Canopy
- 05
Return Population
Structured, verified data is mapped to your tax software's native import format and pushed in — UltraTax CS, CCH Axcess, Drake, Lacerte, ProConnect, GoSystem Tax RS — through the same import mechanisms that SurePrep and GruntWorx use today. The return arrives pre-filled; the flagged items arrive as a structured punch-list in the preparer's workflow queue.
What you get A return that is 90–94% complete before the preparer opens it, with a clear list of what still needs professional judgement.
- UltraTax CS
- CCH Axcess
- Drake
- Lacerte
- ProConnect
- 06
CPA Review & E-file
The preparer sees a review dashboard: source document and extracted value side by side, every flagged item with context, and a single-click approval flow. Nothing is filed until the CPA approves. After approval the return moves to e-signature and IRS MeF submission through the firm's existing tax software — nothing bypasses your compliance chain.
What you get A CPA review that takes 15–25 minutes instead of 3–4 hours, because every repetitive decision has already been resolved.
- Review dashboard
- e-signature
- IRS MeF
- SafeSend
The problem
The tax-prep problem it solves
Every US CPA firm runs the same gauntlet from January through April 15. The bottleneck is not tax judgement — it's the 3–6 hours of data entry, document-chasing, and classification that happen before any judgement begins. That labour is expensive, error-prone, and can't be hired away.
- 58% of clients submit documents after February 15 — compressing the real work into six weeks (CPA Practice Advisor, n=438, 2026).
- A complex 1040 with K-1s and brokerage composites requires 3–6 hours of data entry before any tax analysis begins.
- 70% of CPAs reported making or catching near-miss errors in the final 48 hours before April 15.
- SurePrep 1040SCAN — the industry's leading scan tool — covers ~700 financial institutions. Any other brokerage gets only summary data, not full extraction.
- State K-1s receive zero automated data capture in UltraTax CS; they are indexed to the parent Federal K-1 and left blank (Thomson Reuters documentation).
- 55,152 accounting degrees awarded in 2023–24 — down 6.6% year-over-year. The staffing shortage is structural. The talent pipeline will not recover at the pace firms need (Journal of Accountancy, Oct 2025).
The result: your most expensive staff spend most of tax season on work that is not tax work. The engine doesn't change tax law or replace CPAs — it eliminates the hours that should never have been billable in the first place.
Time to value
How fast you go live
Most firms are live in 3–5 weeks — not months.
- Week 1–2Connect document sourcesAuthenticate to your DMS — TaxDome, SmartVault, SharePoint, Google Drive, Box. Read-only access; nothing is modified at source.
- Week 2–3Configure & testTune the document classifier for your client mix. Run the engine on 10 de-identified prior-year returns. Validate extraction accuracy side-by-side.
- Week 3–4Map to your tax softwareConfigure the import format for your primary tax software — UltraTax, Drake, CCH, ProConnect, Lacerte, or GoSystem. First full end-to-end import tested.
- Week 4–5Parallel run & go-liveRun 20 live returns in parallel with manual prep. Compare outputs. CPA team signs off. Engine goes live for remaining returns.
What you need to start
- A practice management or portal system (TaxDome, Karbon, Canopy, or equivalent).
- Client documents stored in any standard DMS (Google Drive, SharePoint, Box, SmartVault).
- Access to your tax software's import/export format — provided by your software vendor.
- A designated "Qualified Individual" per FTC Safeguards Rule — most firms already have one.
- Your EFIN. The engine does not e-file on your behalf; your existing software and credentials do.
No public API is needed for any major tax software. Integration uses the same file-import mechanisms SurePrep and GruntWorx use today — proven in production at thousands of US CPA firms.
ROI
The return on a CPA & Tax Engine
At an average billing rate of $250–$500 per hour, every hour of prep time eliminated is a direct margin gain — reinvested in advisory work or dropped to the bottom line. For a 10-person firm filing 600 returns per season, a 30% throughput gain means roughly 180 additional returns without a new hire. At the industry's average $700 per return, that is $126,000 in added capacity revenue per season from the same team. The 40% and 3× figures are benchmarks from Filed, a comparable automation platform. Chronexa provides a parallel-run on 20 live returns before full deployment — you validate results before committing.
Proof
What tax teams say
“We were burning 3–4 hours per complex return on data entry alone. Now the preparer opens a pre-filled file with flagged items already organised. The first tax season running the engine, we processed 22% more returns with the same staff.”
“The K-1 extraction alone justified the investment. Every other tool we tested couldn't touch state K-1s — they were entirely manual. The engine handles our partnership clients end-to-end.”
“We had a data scare three years ago and have been paranoid about client data security since. The WISP documentation and US-hosted architecture weren't just checkbox items — they were a genuine selling point when I took it to the partners.”
FAQ
CPA & Tax Engine FAQ
Does the engine replace the CPA reviewer?
No — and it's not designed to. Under the revised AICPA Statements on Standards for Tax Services (effective January 1, 2024), the signing CPA is personally responsible for the completed return, regardless of what tools prepared it. The "under penalties of perjury" statement on every filed return means this cannot be delegated to software. What the engine changes is what the reviewer looks at: an organised, pre-filled file with flagged items, instead of a blank screen and a folder of PDFs.
Which tax software does it work with?
Drake, ProConnect (Intuit), CCH Axcess (Wolters Kluwer), UltraTax CS (Thomson Reuters), Lacerte (Intuit), and GoSystem Tax RS. Integration works through each software's native import format — the same mechanism SurePrep 1040SCAN and GruntWorx use to populate returns today. No public API is required from any vendor.
What happens with K-1s from late-filing partnerships?
The Gap Detection agent identifies missing K-1s based on prior-year return data and sends targeted reminders to the client. When the K-1 arrives — in September after an extension — it is processed automatically and the return is updated. The preparer is notified. No manual tracking required.
Is sending client tax data to a third-party AI tool legal under IRC §7216?
Yes — with conditions. IRC §7216 and 26 CFR §301.7216-2 permit disclosure of tax return information to third-party service providers without taxpayer consent, as long as the purpose is tax return preparation. The engine is deployed on US-hosted infrastructure, which avoids the separate written-consent requirement that applies to processors located outside the United States. Chronexa provides a standard service agreement that satisfies the §7216 service-provider conditions.
We already use SurePrep 1040SCAN — what does the engine add?
1040SCAN is strong for W-2s and brokerage statements from its ~700-institution coverage list. But it explicitly does not capture state K-1 data, and any brokerage not on the list gets only summary amounts — not line-item detail. Crypto CSVs, multi-state allocations, Schedule E worksheets, and non-standard documents remain largely manual. The engine handles the edge cases that represent the majority of your most expensive prep hours — the complex clients who, incidentally, also pay the highest fees.
Sometimes the hardest part is reaching out — but once you do, we'll make the rest easy.
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No-risk guarantee: if we can't find automation worth more than it costs to build, you owe us nothing — and you keep the roadmap.
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