A referral playbook for accounting firms outside the US with US-group clients
Accounting firms outside the US can join the SourceX partner program to introduce US subsidiaries and US-owned clients that hold years of operational records. The firm only makes the introduction; the client works with SourceX directly. Before registering, check your national ethics code, independence for assurance clients, firm or network policy and the client's consent.
Where international firms meet qualifying US companies
Most firms outside the US meet eligible companies through group work. A practice in London, Toronto, Frankfurt, Mumbai or Sydney sees US entities on group reporting packs, consolidations, transfer pricing files, outsourced finance and US entity set-up. The firm can register as a SourceX partner, make the introduction with the client's agreement, and leave everything after that to the company and SourceX.
The people who notice the opportunity are rarely in one team: the partner who runs the US or international desk, the transfer pricing manager who documents the US entity's functions each year, the group reporting lead who chases the US controller at every close, and transaction services staff who see US targets change hands. Each of them already knows the facts a first screen needs, such as headcount on payroll schedules, how long the entity has operated and which finance and operating systems it runs. None of them needs to open, copy or describe a client record to make an introduction, and they should not.
The page for accountants covers the general case; this page adds the cross-border layer of ethics codes, group structures and payee paperwork.
Which clients fit
The strongest candidates are US entities with their own systems and a long operating history, reached through a relationship the firm already has.
| Client type | Signal to look for | Why AI buyers care |
|---|---|---|
| US subsidiary of a non-US group | Its own CRM, ticketing, finance or engineering tools and 50+ full-time employees at peak (contractors excluded) | Records the US entity created and controls are cleaner to license |
| US platform owned by a non-US sponsor or family | Several years of history, including archives from before the acquisition | Long histories show how work and decisions changed over time |
| US-headquartered group whose non-US entities you serve | A group CFO you already speak to | The sponsor sits in the US and the relationship already exists |
| US software, IT services, engineering, logistics or professional services business | Records spread across email, chat, CRM, support and project tools | Multi-step workflows with outcomes are what agent training needs |
| US subsidiary being sold, merged or closed | Systems scheduled for retirement | Exports can be preserved before platforms are switched off |
The company must be a US company with several years of documented operations, rights to license the records and an authorized sponsor: the owner, CEO, CFO or an authorized representative. The firm itself can be based anywhere.
The five gates to clear before the firm registers
Work through these once for the firm, then again for each client you have in mind.
- Code: what does your national code say about referral fees and commissions? The international model is summarized in the IESBA Code overview on referral fees; some countries add statutory professional law, as German Steuerberater and Wirtschaftsprüfer must check.
- Independence: does your firm or any network firm provide audit, review or other assurance to the company or its group? If the group is an SEC registrant, US rules sit on top of your own code: SEC staff correspondence with the AICPA ethics committee treats the SEC's auditor-independence rules on contingent fees as a separate regime from the AICPA Code.
- Policy: does firm or network policy allow referral income at all, and must it be paid to the firm rather than to an individual?
- Consent: has the client agreed to be introduced, and to the disclosure of any reward, before you share its name?
- Contract: who signs the partner agreement, and has the firm reviewed the cross-border referral agreement clauses alongside the program terms?
This is general information, not legal, tax or financial advice. Confirm with your own counsel, tax adviser or professional body before acting.
When to raise it in the firm's year
Raise it at moments when the group is already discussing systems, structure or cash, and never in the middle of an assurance engagement for the same company.
| Moment | Who is in the room | Opening question |
|---|---|---|
| Annual planning meeting with the group CFO | Group CFO, US controller | Which of the US entity's systems hold the longest history? |
| Transfer pricing documentation refresh | Transfer pricing lead, US finance team | Does the US entity run its own operating systems, or group ones? |
| US ERP migration or move to a shared service center | Group IT, US controller | Before the old system goes, has anyone kept a full export? |
| Sale, merger or closure of the US subsidiary | Group CFO, deal or restructuring team | Have the records been assessed as an asset before systems are switched off? |
| Post-acquisition integration of a US platform | Sponsor's finance lead, new CFO | What happens to the acquired company's archives after migration? |
How the introduction works
The firm opens the door and steps back; the company works with SourceX directly.
- The firm registers as a partner and decides who is the partner of record: the firm or a named individual.
- With the client's agreement, the firm sends its referral link to the US sponsor, which takes the company to sourcex.si/apply with the firm's code attached, or submits the referral form with basic fit information.
- SourceX qualifies the company on size, history, data breadth and rights.
- The company builds its data inventory with SourceX, system by system.
- The company agrees price and terms; AI labs and data buyers review; the deal closes, data is delivered and the company is paid.
- SourceX pays the partner reward after it has received its fee.
The firm gives basic fit information only. It never exports, uploads or describes confidential records, and any de-identification and redaction rules are agreed between the company and SourceX before work starts.
What to say to a group CFO
Put the disclosure in the first message so the client decides with full information.
How rewards work for a firm
Partners earn 25% of the eligible platform fees SourceX actually collects from the referred company's licensing deals, capped at $100,000 per referred company. Rewards become payable only after the buyer pays and SourceX receives its fee; a lead, meeting or signed agreement alone does not trigger payment, and rewards are not guaranteed.
The reward is a share of SourceX's fee and is never deducted from what the client receives, which makes disclosure simpler. The referral earnings calculator shows how the published formula works if a client asks. Decide the payee before registering: a firm registering in its own name is asked for the entity form explained in the W-8BEN-E guide for advisory firms. IRS Publication 515 explains that payments to foreign persons can raise US withholding questions; whether any apply to a particular reward depends on the facts, so ask your own tax adviser.
When not to bother
- The firm or its network audits or reviews the company and independence rules rule out a reward. You can still introduce the company without one.
- Your national law or code prohibits accepting a payment for the introduction.
- The US entity mainly processes its own customers' records, as an outsourcing or BPO subsidiary might, and those customers have not consented.
- The US entity is a small sales office that never reached 50+ full-time employees at peak.
- Group systems mix US and non-US records and no one can separate them.
- The client declines consent to be introduced.
Next step
Agree the five gates with your ethics partner, then register as a partner in the firm's name. Clients that prefer to start on their own can apply at sourcex.si/apply using the firm's referral link.
- Step 1Share your linkSend your personal link to a company you know.
- Step 2Company appliesThe company applies itself at /apply.
- Step 3Buyer selects and paysThe buyer selects and pays for the data and SourceX receives its fee.
- Step 4You get your rewardYour share of SourceX fees becomes payable.
Common questions
Can a firm whose network audits the parent group still introduce the US subsidiary?
Possibly, but treat it as an independence question first. If any network firm audits or reviews the group, the independence provisions of your code, and US rules where the group is an SEC registrant, may make a reward linked to the subsidiary's transaction inappropriate. One option in that position is to make the introduction without accepting any reward. Ask your ethics or independence partner before contacting the client.
Should the reward go to the firm or to the individual partner who made the introduction?
Firm policy and your partnership or employment agreement normally settle this, and some firms require fees earned through client relationships to be paid to the firm. The choice also determines who signs the partner agreement and which US tax form is completed: an entity form for the firm, an individual form for a person. Decide before registering, not when the first payment arrives.
Do we have to tell the client that we may be paid?
Assume yes. Many professional codes expect referral fees and commissions to be disclosed to the client, and some expect the client's agreement in advance. Good practice is a short written note before the introduction naming SourceX as the payer, explaining when a reward becomes payable, and confirming that it comes from SourceX's fee and does not reduce the client's proceeds.
Can we introduce a US company that is not one of our clients?
Yes. Any US company that meets the baseline can be introduced if you can reach its owner, CEO, CFO or another authorized representative. Client-specific code provisions may not apply in the same way, but firm policy, confidentiality and conflict checks still do. Credit goes to the first valid referrer whose introduction leads to a verified company application within the attribution window.
What information does the firm give SourceX at the introduction?
Only the company's name, the sponsor's contact details and basic fit information, such as approximate headcount at peak, years in operation and the kinds of systems it uses, all with the client's permission. The firm never sends financial statements, ledgers, exports or descriptions of confidential records. The company provides everything else directly to SourceX during qualification and inventory.
Related pages
- Referral opportunities for accountants and bookkeeping firms
- IESBA Code: can a professional accountant accept a referral fee or commission?
- Steuerberater and Wirtschaftsprüfer: can you accept a reward for an introduction?
- Cross-border referral agreement: the clauses to check before you sign
- Referral Earnings Calculator
- How to fill out a W-8BEN-E for an advisory or consulting firm
Free resources
- Business DSCR calculator — Debt service coverage from cash flow and loan terms.
- MCP ROI calculator — Estimate hours saved, implied savings and first-year ROI from MCP.
- Business exit readiness assessment — A preliminary exit readiness score and checklist for advisors.
- All free tools · MCP resource center
By SourceX Partnerships Team · Published 2026-10-09 · Updated 2026-10-09
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