How IRS Circular 230 applies when Enrolled Agents, CPAs, and attorneys use offshore preparer support. PTIN requirements, supervision standards under §10.35 and §10.36, sign-off obligations, and common mistakes. Written for practitioners, not litigators.
IRS Circular 230 (31 CFR Part 10) governs practice before the Internal Revenue Service. It applies to attorneys, CPAs, Enrolled Agents (EAs), Enrolled Retirement Plan Agents (ERPAs), and registered tax return preparers (a category that has largely been inactive since the 2013 Loving v. IRS decision). When a practitioner governed by Circular 230 uses offshore preparer support, several Circular 230 provisions become directly relevant: §10.35 (competence), §10.36 (procedures to ensure compliance), §10.50 (sanctions), and related sections.
Circular 230 does not prohibit offshore preparer use, does not require that offshore preparers be listed on the return, and does not impose a specific documentation standard for offshore engagement. The framework is principles-based: the signing practitioner remains responsible for the accuracy and completeness of the return, and must maintain competence and due diligence regardless of who does the underlying preparation work. This is identical to the framework that applies to a CPA using an in-house junior accountant – the signing partner is responsible.
Easy to confuse, important to distinguish:
A practitioner using offshore preparer support needs to satisfy both frameworks: §7216 consent before disclosure (federal statute), Circular 230 supervision and sign-off (federal regulation on practice).
Circular 230 §10.35 requires a practitioner to possess the necessary competence to engage in practice before the IRS. Competence requires appropriate level of knowledge, skill, thoroughness, and preparation. For offshore engagements, this means: (1) the signing practitioner must have the knowledge to review the offshore preparer's work for accuracy, (2) any area where the practitioner lacks competence must be addressed through consultation, additional study, or referral.
Practical translation: you can't outsource to offshore preparers the parts of the return you don't personally understand. If you don't know how to review a multi-state 1065 with tiered partnerships, you can't sign a 1065 prepared offshore and expect your due diligence to be defensible just because someone else prepared it. Offshore preparers are support staff, not delegation of your competence obligation.
Circular 230 §10.36 requires practitioners who have principal authority over a practice to take reasonable steps to ensure the firm has adequate procedures for Circular 230 compliance. For firms with offshore staff, this typically includes: (1) documented procedures for offshore engagement supervision, (2) quality control review by US-credentialed staff before return filing, (3) training records for offshore preparers on US tax law updates, (4) documentation of §7216 consent collection and storage. OPR examinations occasionally review §10.36 procedures in firms using offshore staff.
Circular 230 §10.50 authorizes OPR to impose sanctions for violations including: censure (public), suspension (up to 59 months), disbarment (permanent), and monetary penalties up to 100% of gross income derived from the sanctioned conduct. Most offshore-related discipline we've observed has been census-level for documentation failures, not disbarment – but the statutory authority exists for more severe discipline where warranted.
Circular 230 doesn't specify a required supervision structure, but practitioners are expected to exercise "appropriate supervision" of non-practitioner staff. For offshore engagements, this generally means: (1) the signing practitioner reviews every return before filing, (2) complex issues flagged for practitioner input before offshore preparation proceeds, (3) quality control sampling on simpler returns even where not individually reviewed in detail, (4) documented feedback loop on errors found in review.
Most firms we work with review 100% of offshore-prepared returns before filing for the first 2–3 months of a new engagement, then move to a sampling approach (100% review on complex returns, 20–30% sampling on simple returns) once the offshore preparer's accuracy is established.
EAs are federally licensed tax practitioners and subject entirely to Circular 230 (IRS is the sole regulator). The framework above applies directly. Most EA practices run the full operation from one or two licensed EAs plus support staff – offshore preparers fit into the support staff category. The EA signs the return, reviews the work, and maintains the practitioner-client relationship.
CPAs are subject to Circular 230 for IRS practice and to state board regulations for general professional practice. The two frameworks overlap heavily but aren't identical – state boards have additional rules on third-party provider disclosure (see our state matrix) that Circular 230 doesn't address. A CPA using offshore preparers needs to satisfy both frameworks.
Attorneys practicing tax are subject to Circular 230 for IRS practice and to state bar rules for general legal practice. State bar rules on outsourcing legal work can be stricter than Circular 230 – some states require explicit client consent for any outsourcing. Attorneys using offshore preparer support should verify their state bar's outsourcing rules separately.
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