What Happens to Your Purchase Order When Tariffs Change Mid-Shipment The order is placed. The goods are on the water. The tariff rate just changed.
The order is placed. The goods are on the water. The tariff rate just changed. Here is what that means and what you can actually do.
In 2025, tariff rates on Chinese goods changed multiple times — sometimes with only days of notice. Amazon private-label sellers who had purchase orders in transit when those changes hit found themselves in a specific, disorienting situation: a contract that made sense at 20% duty suddenly didn't make sense at 145%. This guide explains what your legal and commercial options actually are, how to calculate what the change costs you, and how to use Amazon BSR velocity data to make the proceed-or-slow-down decision.
A tariff is a tax paid by the US importer — you — to US Customs when goods enter the country. The factory is unaffected; they were paid in RMB for goods that left China. The rate applies at the time of import entry, not at the time you placed the purchase order.
A tariff is a tax paid by the US importer — you — to US Customs when goods enter the country. The factory is unaffected; they were paid in RMB for goods that left China. The rate applies at the time of import entry, not at the time you placed the purchase order.
This is the core of the problem: your contract with the factory locked in a price, but the tariff rate that applies to your import is determined on the day your goods arrive at the US port. If you placed a PO expecting 25% duties and the rate moved to 45% while the ship was at sea, you owe the higher rate on arrival regardless of when you signed the purchase order.
The calculation that matters:
Reprice immediately once you know the goods are arriving. The longer you absorb the new duty rate at the old selling price, the deeper the loss.
Once goods are on the water, your options are limited but not zero. Here is what is actually available, in order of practical usefulness.
Once goods are on the water, your options are limited but not zero. Here is what is actually available, in order of practical usefulness.
This is the most important action and the one most sellers delay too long. The new landed cost is known the moment you know the new tariff rate. Reprice immediately — don't wait for the shipment to arrive, clear customs, and reach the warehouse. The time between goods leaving the port and reaching FBA is typically 2–4 weeks. Every day you sell at the old price is margin you will not recover.
A category-level BSR check is useful here: if competitors have already repriced (look for prices moving up across the top 10 listings in a category), it means the market is absorbing the cost shock and you have room to follow. If competitors have not repriced, you face a trade-off between protecting margin and protecting rank — a decision that depends on how much inventory you have on hand and whether you believe the tariff situation will reverse.
Your legal obligation to pay the factory in full almost certainly does not change (see the FAQ below on force majeure). But factories that want your repeat business have a commercial incentive to share some of the pain. A typical ask: "We'd like to discuss absorbing 5–10% of the duty increase between us. Here's our next PO projection if we can make this work." Factories with high utilization will refuse; factories with available capacity are more likely to engage.
Document any cost-share agreement in writing before the next PO is placed. Verbal agreements on price adjustments are almost never honored when factory capacity tightens.
If the tariff situation is genuinely in flux — active legal challenges, pending exclusion requests, or executive orders under review — a bonded warehouse lets you defer the duty payment while waiting for resolution. Goods in a bonded warehouse or Foreign Trade Zone are under Customs custody but have not formally entered the country. Duties are paid entry-by-entry as you withdraw inventory for sale.
This is not a tool for avoiding duties; it is a tool for timing when you pay them and preserving optionality if a rate reduction or exclusion is granted after your goods arrive.
If you purchase through a trading company or agent — rather than directly from a factory — your US import value is the price you paid the intermediary. The factory sold to the intermediary at a lower price. US Customs allows you to declare the customs value at the earlier transaction (factory price) rather than the intermediary price, under the First Sale rule.
First Sale can legitimately reduce your dutiable value by 15–30% in a typical intermediary transaction. It requires CBP advance ruling, proper documentation of the full transaction chain, and a supplier willing to disclose factory pricing. It does not work for direct factory purchases (only one sale in the chain). But if you are buying through a sourcing agent or trading company and have not explored First Sale, you may be leaving a meaningful tariff reduction unclaimed.
In extreme cases — tariff rates that truly destroy the margin — it is possible to divert a container that has not yet arrived in the US to a different destination. This is logistically complex and expensive (detention, demurrage, rerouting costs), and it requires the container to still be at sea or in a port outside the US. Once goods arrive at a US port, diversion is not available. This option is a last resort for situations where the tariff rate change makes the US market genuinely unviable for the shipment.
The proceed-or-slow-down decision for a mid-shipment tariff crisis is fundamentally a demand question: has the market absorbed the cost shock, or is demand softening as sellers try to pass costs through? BSR velocity — the rate at which top products in a category are changing rank — is one of the few real-time demand signals available to you.
The proceed-or-slow-down decision for a mid-shipment tariff crisis is fundamentally a demand question: has the market absorbed the cost shock, or is demand softening as sellers try to pass costs through?
BSR velocity — the rate at which top products in a category are changing rank — is one of the few real-time demand signals available to you. Here is how to read it in a tariff context:
BSR alone is not a sourcing-decision-grade signal. But in the specific context of a tariff-crisis decision — where you need to know in days, not weeks, whether the market is absorbing cost increases — it is the fastest signal available and qualitatively useful even without a formal methodology run.
How much of this crisis matters to you depends heavily on your current inventory position: Stockout on Amazon right now : you have lost BSR rank and velocity regardless of the tariff. Getting the in-transit shipment to FBA as fast as possible matters more than tariff optimization.
How much of this crisis matters to you depends heavily on your current inventory position:
A word on the legal reality: almost no standard factory purchase order includes a tariff-adjustment clause that protects the buyer. The typical PO covers price, quantity, delivery date, and payment terms. Tariff changes fall under "buyer's risk" in virtually every standard Chinese factory contract.
A word on the legal reality: almost no standard factory purchase order includes a tariff-adjustment clause that protects the buyer. The typical PO covers price, quantity, delivery date, and payment terms. Tariff changes fall under "buyer's risk" in virtually every standard Chinese factory contract.
Buyers who have been through a tariff cycle before sometimes add language like: "In the event of a material change in applicable US customs duties (defined as a change of 10 percentage points or more), the parties agree to renegotiate the unit price in good faith before final payment is released." This is not standard; factories may push back; but it creates a contractual hook for a conversation that you would otherwise be having purely on the basis of relationship.
If you are placing large orders — say, $50,000+ — a freight forwarder or customs broker who has dealt with Section 301 tariff exposure can often advise on specific contract language before the PO is signed. The time to negotiate this protection is before the order, not after the tariff moves.
If you have goods in transit, three questions for your freight forwarder this week: What is the current applicable duty rate for my HTS code, and has it changed in the last 90 days? Do I have First Sale valuation set up, and if not, what would it require given my current transaction structure?
If you have goods in transit, three questions for your freight forwarder this week:
Most Amazon sellers interact with their freight forwarder only at shipment time. On tariff questions, a proactive conversation is worth significantly more than a reactive one.
Understanding your real landed cost — and how it changes when tariff rates move — is the foundation of any supply chain intelligence work. BSR velocity tells you whether demand is absorbing cost increases. Landed cost arithmetic tells you whether the margin math still works at the new price. Between those two signals, you have enough to make the in-transit decision with clarity.