Post Summary Correction

A Post-Summary Correction (PSC) is a filing with US Customs that corrects errors on an entry summary before it liquidates. If you misclassified an HTS code, used the wrong valuation, listed the wrong country of origin, or overpaid duties for any other reason, a PSC is the mechanism that fixes it and gets your money back. PSCs are one of the three refund paths Caspian files, alongside Protests and Duty Drawback.

314 days from the date of entry, and only while the entry is still unliquidated. After liquidation, the PSC window closes and your only remaining option is a Protest. Caspian's Trade Audit flags every entry approaching its PSC deadline so corrections get filed before the window expires.

Most entry-level errors that affect duty owed: HTS misclassification, valuation mistakes, incorrect country of origin, missed trade program eligibility (USMCA, GSP, etc.), and duty overpayments tied to any of the above. If correcting the error means CBP owes you money back, a PSC is how you claim it.

Timing. PSCs are filed before liquidation. Protests are filed after. PSCs correct entry errors proactively, within 314 days of entry. Protests challenge CBP decisions reactively, within 180 days of liquidation.  Same goal of getting back duty you shouldn't have paid, but different filing windows and different procedures. Caspian files both.

You need a licensed customs broker to file a PSC, yes. Caspian has them in-house. You don't hire a separate broker, you don't coordinate between vendors, and you don't pay broker fees on top of platform fees. The PSC pipeline is built into the platform and reviewed by licensed brokers before submission to CBP.

PSC filing is included in every paid plan, with monthly allotments by tier.  Additional PSCS beyond your allotment are $100 per entry. If you need to move fast, Accelerated PSCs are available on a refund-contingent basis: 2% success fee, no recovery, no charge. Full pricing is on the platform pricing page.

Caspian files Accelerated PSCs. If you sign with Caspian within 30 days of an upcoming liquidation, Accelerated PSC filing fast-tracks the correction before the window closes.  The fee is contingent on successful refund. If CBP doesn't pay out, you don't pay Caspian.

Trade Audit finds them. The platform scans every entry in your customs history, flags the ones with classification, valuation, or origin errors, and routes them into the PSC pipeline automatically.  You don't have to know which entries are wrong. Caspian's job is to find them, file the correction, and get the refund back to you before liquidation closes the window.