Customs Power of Attorney: What It Is and Why Your Broker Needs One

A customs power of attorney is the legal document that lets a customs broker file entries, sign declarations, and transact customs business on an importer’s behalf, and under 19 CFR 141.46 a licensed broker cannot legally transact that business without a valid one on file. CBP’s own document for it is Customs Form 5291, though 19 CFR 141.32 also accepts an equivalent general or limited power of attorney as long as it is executed the same way.

This guide covers who has to grant one, what changes for a corporation, a partnership, or a foreign principal, how long it stays in force, and how to revoke it, plus where it fits alongside the customs bond and entry summary CargoTrans collects before filing a client’s first entry.

What a Customs Power of Attorney Authorizes

Under 19 CFR 141.31, a power of attorney may be executed to authorize an agent or attorney to transact a specified part, or all, of the customs business of the principal granting it. That scope can be narrow, limited to a single shipment or entry type, or broad enough to cover every transaction a broker handles for that importer going forward.

The regulation sets a few hard limits. A power of attorney cannot be granted to a minor. It also draws a distinction between a resident principal, generally a US-incorporated company or a partnership with resident partners, and a nonresident principal, a distinction that drives separate requirements covered further down.

In practice, the scope named on the document matters as much as the fact that one exists. A POA can cover routine entry filing, or it can be extended to protests, drawback claims, and other customs business, and a broker generally works from the authority actually granted rather than assuming a signature covers whatever comes up later. Reviewing that scope periodically, particularly as an importer’s product mix or import volume changes, is worth doing rather than assuming the original grant still matches what the broker is now handling.

CBP Form 5291: The Standard Document

19 CFR 141.32 sets out the form. CBP Form 5291 is the standard document used to grant power of attorney to transact customs business, and it can be issued as unlimited, covering all customs business, or limited to specific transactions. Where an importer or broker uses a substitute document instead of Form 5291 itself, the regulation requires that it be executed in the same manner and contain equivalent authorizing language.

In practice, this is the document CargoTrans asks every new client to sign before any entry summary is filed on their behalf. It names the broker as agent, states the scope of what the broker is authorized to do, and is signed by someone with authority to bind the importer.

Why a Broker Cannot File Without One

19 CFR 141.46 requires a customhouse broker to obtain a valid power of attorney before transacting customs business in the name of a principal. The document does not have to be filed with CBP itself; instead, the broker retains it in its own records and must produce it for CBP or Treasury representatives on request, consistent with the recordkeeping obligations that come with a broker’s licensed customs brokerage status under 19 CFR Part 111.

That requirement is not a formality. An entry filed without a valid power of attorney on file is filed without authority, which exposes both the broker and the importer, so a missing or expired POA stops a filing exactly the way a missing bond does.

Corporate POAs: When an Officer's Signature Is Enough

For a resident corporation, a power of attorney is not required at all if the person signing customs documents is known to CBP to be the president, vice president, treasurer, or secretary of that corporation. Where a power of attorney is used anyway, or is required because the signer does not hold one of those titles, it must be executed by a person duly authorized to do so on the corporation’s behalf.

A nonresident corporation faces an added step. If it has not qualified to conduct business under state law in the state where its agent is empowered to act, the power of attorney has to be supported by documentation establishing the signer’s authority to execute it for the corporation, since CBP has no independent way to verify who can bind a foreign company.

That extra documentation is usually a certified corporate resolution or an equivalent record naming the signer and confirming they are authorized to grant the power of attorney on the company’s behalf. It is a small step to prepare in advance and a slow one to assemble under pressure once a shipment is already sitting at the port waiting on paperwork.

Partnerships, Nonresidents, and Foreign Corporations

A power of attorney issued by a partnership is limited to a maximum of two years from the date it is executed, under 19 CFR 141.34; every other kind of principal, individual or corporation, can grant one for an unlimited period. That two-year clock is worth tracking separately if a partnership is one of the entities on file.

A nonresident principal faces a distinct condition. Under 19 CFR 141.36, a power of attorney executed by a nonresident will not be accepted unless the designated agent is a US resident and is authorized to accept service of process against that nonresident. That resident-agent requirement is central to how a non-resident importer structures its US import program, and it is usually satisfied through the broker relationship itself rather than a separate arrangement.

How Long a POA Lasts, and How to Revoke One

Outside the two-year partnership limit, a customs power of attorney has no built-in expiration date. It stays in force until it is affirmatively revoked, which is why importers rarely think about it again after the initial paperwork, even as brokers, ports, and shipment volumes change over the years.

Revocation itself is simple by design. 19 CFR 141.35 makes any power of attorney subject to revocation at any time by written notice given to, and received by, CBP, either at the port of entry or electronically. There is no requirement to wait for a renewal date or coordinate the timing with an active shipment.

Switching brokers is the most common reason a POA gets revoked in practice, and it is worth doing deliberately: revoke the old grant in writing and execute a new Form 5291 for the incoming broker at the same time, rather than leaving both technically valid at once. An importer with entries in flight during a broker transition should confirm which broker of record is authorized before the next filing goes out, not after.

Onboarding: What CargoTrans Collects Before the First Entry

In practice, the power of attorney is one of three things a broker needs on file before touching an entry: the POA itself, proof of an active importer number, and confirmation of the customs bond covering the shipment. Collecting all three before the goods arrive, rather than scrambling once they’re at the port, is what keeps a first-time importer’s entry moving on schedule.

For importers building toward C-TPAT certification or a formal trade compliance management program, a clean, current power of attorney on file with a single broker of record is also part of the documented control environment CBP expects to see, not just a filing prerequisite.

Frequently Asked Questions