Correcting an Entry Just Got Stricter: PSC Payments Now Run Through ACH
Since August 5, money owed on a post summary correction can no longer be paid by check — and a partial payment blocks every later correction on the same entry.
A post summary correction, or PSC, is how an entry summary already filed with CBP gets fixed before it liquidates: a wrong classification, a value that moved, a country of origin, a quantity. With duty rates changing as often as they have this year, corrections have become routine work rather than an exception.
CBP modified the PSC test in a Federal Register notice published on July 6, 2026 (91 FR 41053). The changes became operational on August 5, 2026. Three of them are worth knowing even if your broker is the one pressing the buttons.
1. Increases must be paid electronically
Any increase in estimated duties, taxes and fees resulting from a PSC must now be transmitted via the Automated Clearinghouse. Check and cash are no longer accepted. Payment requires prior enrollment in either the ACH Debit or the ACH Credit process, which is not instant — if your company pays CBP by check today, that enrollment is the thing to start now rather than on the day a correction is due.
2. A partial payment freezes the entry
This is the trap. No further PSC can be submitted on an entry until the increase from the previous PSC is paid in full and processed by CBP. Pay part of it and the entry is stuck: the correction you filed stands, and the next correction — including one that would have reduced your liability — cannot be transmitted at all.
You do have a choice about when: pay the full increase before liquidation, or wait to be billed at liquidation. What you cannot do is pay some of it.
Interest is separate. CBP will not accept interest before liquidation; it is billed afterwards, if any is due.
3. AD/CVD increases carry a three-day clock
Where a PSC increases liability for antidumping or countervailing duty, electronic payment of the additional AD/CVD is due via ACH within three business days of submitting the PSC. Ordinary duty increases have no such deadline; AD/CVD does.
The filing window, and the exception that just got formalized
A PSC must be transmitted within 300 days of the date of entry, or up to 15 days before the scheduled liquidation date, whichever comes first. Where liquidation has been extended under 19 CFR 159.12, the 15-day rule governs.
The notice also formalizes what CBP had been permitting in practice since 2022: for entries whose liquidation is suspended beyond 300 days — AD/CVD suspension, an EAPA case, a court injunction — a PSC may be filed outside the 300-day window, so long as the suspension basis is on the entry when the PSC is filed. If you have entries frozen in an AD/CVD proceeding, that door is open rather than closed.
What this means for you
An entry also has to be in the right state before any of this applies: not yet liquidated, in accepted status, not under CBP review, and the prior entry summary or PSC fully paid.
PSCs are filed by the customs broker who filed the entry, not by us. What we can do is the part that sits on our side of the job — pulling the entry numbers, dates and documents for the containers we moved, so your broker is working from the real timeline when deciding what to correct and by when. Tell us which entries you are looking at.