International

SEC Compliance Support for UK and International Firms

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Published August 2026 · Last reviewed 19 October 2026 · 9 min read

Key takeaways

  • A non-US firm can fall within US registration because of its US clients or investors, its US activity or its use of US jurisdictional means.
  • Advisers with $100 million or more of regulatory assets under management may register with the SEC and must do so at $110 million; smaller advisers generally register with states.
  • A foreign private adviser is exempt: no US place of business, fewer than 15 US clients and private fund investors, and less than $25 million from them.
  • Exempt reporting advisers still file parts of Form ADV, and remain subject to the anti-fraud rules.
  • Registered advisers file an annual Form ADV update within 90 days of their financial year end, appoint a chief compliance officer and keep written policies.
  • The SEC has 45 days to act on an adviser application; FINRA's new member review for a broker-dealer runs to 180 days.

UK and other non-US firms encounter US securities regulation more often than they expect. Advising US clients, marketing a fund to US investors, or dealing with US counterparties can bring a firm within the scope of registration requirements that apply by reference to activity and connection rather than to place of establishment.

This article sets out the principal questions a non-US firm should consider, and the obligations that follow where registration applies. It is an outline rather than a substitute for US legal advice, which firms in this position should obtain.

The threshold questions

Is the firm acting as an investment adviser? The definition captures those who, for compensation, engage in the business of advising others on securities. It is broad, and advice provided as part of a wider service may fall within it.

Does the firm have US clients or US investors? Advisory clients resident in the US, and US investors in a fund the firm manages, are the most common route into US requirements.

Is the firm using US jurisdictional means? Use of US mails, US interstate commerce, or US-based communications infrastructure can establish the necessary connection.

Is the activity broker-dealer activity? Effecting transactions in securities for the account of others, or dealing for one's own account as part of a regular business, raises separate registration questions.

Does an exemption apply? Several exemptions may be available depending on the number and type of US clients, the assets under management attributable to US clients, and whether the firm has a US place of business.

RouteTestFiling
SEC registration$100 million or more of regulatory assets under management (mandatory from $110 million), or a non-US principal officeForm ADV Parts 1 and 2, Form CRS for retail clients
Foreign private adviserNo US place of business, fewer than 15 US clients and private fund investors, less than $25 million attributable to them, no holding out to the US publicNo Form ADV filing for this exemption
Private fund adviserAdvises only private funds with less than $150 million managed in the USExempt reporting adviser filing on Form ADV
Venture capital fund adviserAdvises only venture capital fundsExempt reporting adviser filing on Form ADV

The full process, fees and timing are on our US SEC investment adviser and broker-dealer registration page.

The analysis is fact-specific and the consequences of getting it wrong are significant, including the potential for rescission rights and enforcement action.

Registration categories for investment advisers

Registered investment adviser. Full registration with the SEC, bringing the complete compliance framework including written policies, a chief compliance officer, books and records requirements, custody rules where applicable, advertising and marketing rules, and examination by SEC staff.

Exempt reporting adviser. Advisers relying on certain exemptions must nonetheless file portions of Form ADV and are subject to certain provisions including the antifraud rules and, in some cases, examination.

Exempt with no filing obligation. Certain advisers fall outside registration and reporting entirely, though the antifraud provisions continue to apply.

The category determines the obligations, and firms should establish which applies before assuming a light-touch outcome.

Obligations for registered advisers

Compliance programme. Written policies and procedures reasonably designed to prevent violation, reviewed at least annually for adequacy and effectiveness.

Chief compliance officer. A designated individual responsible for administering the policies, with the competence and authority to do so.

Form ADV. Disclosure filed at registration, updated annually within 90 days of the adviser's financial year end, and amended promptly where specified information becomes materially inaccurate.

Books and records. Specified records maintained for prescribed periods and available for examination.

Custody. Where the adviser has custody of client assets, requirements including use of a qualified custodian and, in many cases, a surprise examination.

Marketing. Rules governing advertisements and compensated testimonials and endorsements, including requirements on performance presentation.

Code of ethics. Standards of conduct, personal trading reporting, and provisions addressing material non-public information.

Fiduciary duty. A duty of care and loyalty owed to clients, which the SEC has articulated in interpretive guidance and which underpins the substantive obligations.

Cross-border considerations

Non-US firms face additional complexity.

Which entity registers. Where a group has multiple entities, determining which conducts the US-facing activity and whether affiliated advisers may be treated together.

Application of US rules to non-US clients. The SEC has provided relief in certain circumstances allowing non-US advisers to apply US requirements only to their US clients, but the scope of that relief is specific and should not be assumed.

Interaction with home-state regulation. A UK firm may hold FCA permissions covering the same activity, and the two frameworks apply in parallel rather than one displacing the other. See our guide to FCA permissions review and our FCA investment firm authorisation page.

Record keeping and data. US books and records requirements must be satisfied notwithstanding data protection or localisation constraints in the home jurisdiction.

Examination. SEC examination of a non-US registered adviser is conducted on the same basis as for a domestic firm.

About Regulatory Counsel

Regulatory Counsel advises UK and international financial services firms on authorisation, prudential and conduct requirements, governance, financial crime and regulator engagement.

Our cross-border work covers assessment of US regulatory exposure for UK and international firms, registration category analysis, compliance programme design for registered advisers, Form ADV preparation and ongoing amendment, books and records frameworks, marketing rule compliance, coordination between UK and US compliance frameworks, and examination preparation. We work alongside US counsel where US legal advice is required.

Contact our regulatory team at [email protected]. We answer every enquiry the same business day with a written proposal.

This article is provided for general information and does not constitute legal or regulatory advice, including US legal advice. US securities regulation changes and its application is fact-specific; firms should verify the current position against SEC publications and obtain US legal advice on their circumstances.

Frequently asked questions

It depends on the firm's activity and its connection to the US. A UK investment adviser with US clients, or managing a fund with US investors, may be required to register, may qualify for an exemption, or may fall within the exempt reporting adviser category. The analysis is fact-specific and requires US legal advice.

An adviser relying on certain exemptions from full registration that is nonetheless required to file portions of Form ADV and remains subject to certain provisions including the antifraud rules.

Written policies and procedures reasonably designed to prevent violation of the Advisers Act and rules, administered by a designated chief compliance officer and reviewed at least annually for adequacy and effectiveness.

The disclosure form filed by investment advisers on registration, updated annually and amended promptly where specified information becomes materially inaccurate. Parts are provided to clients.

No. Authorisation in the UK does not displace US registration requirements where they apply. The two frameworks operate in parallel.

The SEC has provided relief in certain circumstances, but its scope is specific and should not be assumed. Firms should obtain US advice on the position applicable to them.

A non-US adviser is exempt from SEC registration if it has no place of business in the US, fewer than 15 clients and private fund investors in the US, less than $25 million of assets under management attributable to them, does not hold itself out to the US public as an adviser, and does not advise a registered fund or business development company.

The SEC must grant registration or begin proceedings to deny it within 45 days of a complete Form ADV filing. A broker-dealer also needs FINRA membership, where the new member application review can take up to 180 calendar days.

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