Best ways to sell accounting and tax firm data to AI companies
By Gareth HoyleLast updated How we research
In short
The best ways to sell accounting and tax firm data to AI companies are a vetted broker such as Sell My Data To AI, or a license with Mercor, Labelbox Prism, Handshake AI or micro1. ddiy.co reported Mercor's referral listing at $25,000 to $865,000 for accounting firms. Review notes and tax computations show the professional judgment buyers are looking for.
Key takeaways
- Mercor is best for firms of 5 to 200 staff on mainstream cloud tools.
- Labelbox Prism is best for firms with financial modeling and review trails.
- Handshake AI is best for firms with documented financial models and procedures.
- Sell My Data To AI wrote this list and ranks itself first. The method section explains the criteria.
- Every entry's facts come from the company's own published terms, checked November 2026.
Accounting and tax firms hold records of professional judgment applied to real numbers: working papers with reviewer notes, tax computations showing each adjustment, client query logs and firm audit manuals. Finished accounts show far less of that reasoning. Our accounting firm data page lists what buyers ask for.
ddiy.co reported Mercor's referral listing at $25,000 to $865,000 per firm for accounting and tax firms of 5 to 200 employees. Labelbox Prism lists financial modeling and financial reasoning traces among the data it acquires, and Handshake AI gives financial models and process documentation as examples.
Client confidentiality sets the limits. The ICAEW Code of Ethics bars using client information for the firm's advantage without authority, and US preparers need taxpayer consent under IRS Section 7216 before tax return information is used or disclosed. Our de-identification guide explains what buyers expect.
- 1
Sell My Data To AI
Best for firms that want client confidentiality checked before any buyer sees a file
Sell My Data To AI values accounting and tax firm records and brokers licenses with vetted AI buyers. Our eight-point seller vetting covers client contract restrictions, the privacy notice in force at collection and a documented de-identification method. You pay nothing to be assessed, approve every buyer, sample and license term, and agree the success fee in writing before any introduction. We do not take custody of your raw data.
- Fee to seller
- Nothing to be assessed. A success fee only when a deal completes, agreed in writing before any buyer introduction
- Seller vetting
- Eight-point standard, from authority to sign to manifest accuracy, before any buyer sees your data
- Buyer vetting
- Company identity, intended use, security and retention, onward transfer limits and, for larger deals, ability to pay
- Data custody
- No custody of raw data. Buyers see redacted samples under a mutual NDA
- Your control
- You approve every buyer, sample and license term, and can withdraw at any point before signing
- 2
Mercor
Best for firms of 5 to 200 staff on mainstream cloud tools
Mercor pays businesses to license workflow data from more than 100 supported tools, including Gmail, Salesforce and Microsoft Teams, and names finance and insurance and professional services among its target industries. Its data monetization page says Mercor covers extraction, anonymization and transfer costs and pays by wire after delivery, typically within 2 to 4 weeks of the signed agreement.
- Published payout
- Not published on mercor.com/data. ddiy.co reported Mercor's referral page listing $20,000 to $1.5 million by industry (October 2026)
- Size requirement
- Not published on mercor.com/data. Target industries include legal, healthcare, finance and insurance, professional services, manufacturing, retail, real estate and logistics
- Exclusivity
- Not published
- Fee to seller
- None. Mercor covers extraction, anonymization and transfer costs
- Payment timing
- Wire transfer after delivery, typically within 2 to 4 weeks of the signed agreement
- 3
Labelbox Prism
Best for firms with financial modeling and review trails
Labelbox Prism acquires work documents, including financial modeling, and lists financial reasoning traces among the categories with buyer interest. It publishes deals from around $50,000 for smaller targeted datasets to more than $1 million for large enterprise partnerships, pays an upfront fee at signing plus a revenue share on downstream use, and makes licenses exclusive by default.
- Published payout
- From around $50,000 (smaller targeted datasets) to more than $1 million (large enterprise partnerships)
- Size requirement
- Not published. Prefers high-volume B2C companies for support logs
- Exclusivity
- Exclusive by default, tailored to scope, sensitivity and strategic value
- Fee to seller
- Not published. Scoping is free and non-binding
- Payment timing
- Upfront fee at signing plus revenue share. Prism says first call to first wire takes under 21 days
- 4
Handshake AI
Best for firms with documented financial models and procedures
Handshake AI, the AI arm of the Handshake careers network, buys operational data such as financial models, process documentation, underwriting workflows, design documentation and test reports. Its data partnerships page headlines $100,000 to more than $4 million and sets out a five-step process ending in delivery and payment. Its page text does not state size thresholds, exclusivity, fees or payment timing.
- Published payout
- $100,000 to more than $4 million (headline). Its calculator shows estimates up to $100,000 and $400,000 to $800,000 or more
- Size requirement
- Not published. The calculator asks for employees, tools used and years in business
- Exclusivity
- Not published
- Fee to seller
- Not published
- Payment timing
- Not published. Payment follows delivery as the final process step
- 5
micro1
Best for firms with 30 or more staff and finance SOPs
micro1 licenses operational records such as engineering documentation, finance SOPs, support tickets, CRM records and logistics workflows, and supplies them to AI labs and enterprises in the US and allied countries. Its data partnerships page publishes tiers from $100,000 to more than $3 million, asks for 30 or more full-time staff and mainly English records, and says micro1 removes or transforms personal information before sharing data.
- Published payout
- $100,000 to $500,000 (qualified partnerships), $500,000 to $3 million (large-scale or ongoing), more than $3 million (highly unique data). Agent trajectories listed at $1 million to $2 million a year
- Size requirement
- 30 or more full-time staff, mainly English records, US first, then the UK and Canada
- Exclusivity
- Not published
- Fee to seller
- None stated
- Payment timing
- Homepage says within 30 days of acceptance. FAQ says up to 30 days to review, then payment within 30 days of invoice
- 6
SellMyData
Best for smaller practices with QuickBooks and document exports
SellMyData is a broker that de-identifies company data, such as messages, code, documents, records and tasks from Slack, GitHub, Salesforce, QuickBooks and Zendesk, and sells it to AI labs. It sets no minimum headcount, charges nothing upfront, takes a commission when a sale closes, lets sellers approve every buyer and term, and targets payment within 7 days of a sale closing.
- Published payout
- Not published. Price set by data type, volume, years of history and lab demand, and approved by the seller
- Size requirement
- No minimum headcount
- Exclusivity
- Not published
- Fee to seller
- Nothing upfront. Commission when a sale closes (rate not published)
- Payment timing
- Target of 7 days after a sale closes
- 7
Endless Data
Best for firms that want a fixed sum on a non-exclusive license
Endless Data, the trading name of Seldon Ventures, L.L.C., licenses quotes, tickets, work orders, SOPs and internal communications and places them with several AI labs, naming micro1, Mercor and Handshake. It advertises up to $4 million as an indicative estimate, asks for roughly 30 or more staff, uses a non-exclusive license and charges the seller nothing because the labs pay it.
- Published payout
- Up to $4 million (indicative estimate based on headcount, years of history and location)
- Size requirement
- Roughly 30 or more employees, several years of history, English documentation. US, UK and Canada prioritized
- Exclusivity
- Non-exclusive
- Fee to seller
- None. Endless is paid by the labs
- Payment timing
- Fixed sum agreed before data is shared, paid after signing, preparation and transfer. No date published
- 8
Troveo
Best for firms that want income from repeated sales
Troveo is a licensing agent that licenses company data from chat, email, documents, CRM, finance and code platforms to AI buyers on your behalf, sharing revenue on every sale. Its business data page reports more than $20 million paid to licensors and more than 40 active buyers, says full-company deals start at six figures, charges no fees and asks for time-limited exclusivity.
- Published payout
- Typical full-company deals start at six figures. More than $20 million paid to licensors to date (Troveo figure)
- Size requirement
- Not published. Its estimator uses headcount (20 to 1,000 or more) and years trading (under 3 to 15 or more)
- Exclusivity
- Time-limited and has to be earned, with exit terms in the agreement
- Fee to seller
- None. No fees, setup costs or deductions from payouts
- Payment timing
- Revenue share on every sale. Timing set in the agreement, not published
How we ranked this list
Sell My Data To AI wrote this list and ranks itself first. We are a broker with a commercial interest in the result, and some companies below offer a service similar to ours. Read the order with that in mind.
For accounting firms we gave extra weight to buyers whose published brief names finance records, and to terms that let a firm exclude client tax return information and AML files.
| Criterion | What we checked |
|---|---|
| Fit for the data type | Whether the company names this kind of record in its own published brief |
| Published terms | Whether payouts, size requirements and license terms appear on the company's own pages |
| Vetting | What checks the company says it runs on sellers, buyers or datasets before a sample changes hands |
| Exclusivity | Whether licenses are exclusive, non-exclusive or perpetual, and whether that is published |
| Fees | Whether the seller pays a fee or commission, and whether the rate is published |
| Payment timing | When sellers are paid, as stated by the company |
| Transparency | How much of the above you can confirm before a first call |
Every fact about another company comes from our profile of it in the data buyers directory, checked on that company's own pages in November 2026. Where a term is missing we write "Not published" rather than guess. After first place, the order reflects fit for a company selling or licensing its data, not a quality score, and we do not rate any company negatively.
We rank Sell My Data To AI first because this is our list and our service is built for this reader, not because we scored ourselves against the others. We are independent of the buyers we work with, and our terms are on our fees and how we vet pages so you can compare them line by line.
Frequently asked questions
Can an accountant sell anonymized client data to AI companies?
Do US tax preparers need taxpayer consent to include tax returns?
Which AI buyers name finance records in their brief?
Will selling data affect a firm's anti-money laundering obligations?
Sources
- How to sell your company's data to AI companies, ddiy.co (figures taken from each buyer's own site), accessed November 2026
- Disclosure of confidential information (for members in practice), ICAEW Technical Advisory Service, accessed November 2026
- Section 7216 information center, Internal Revenue Service, accessed November 2026
- Proceeds of Crime Act 2002, section 333A: tipping off in the regulated sector, legislation.gov.uk, accessed November 2026
- Data monetization, Mercor, accessed November 2026
- Prism, Labelbox, accessed November 2026
- Data partnerships, Handshake, accessed November 2026
- Data partnerships, micro1, accessed November 2026
- SellMyData homepage and FAQ, SellMyData, accessed November 2026
- Endless Data homepage and FAQ, Endless Data, accessed November 2026
- Business data, Troveo, accessed November 2026