You ordered 500 navy work jackets for your crew, size mix spelled out in the purchase order. The truck arrives with 480 jackets in a shade closer to royal blue, two cartons water-stained. Your supplier shrugs: close enough, take them, they'll knock a few percent off. Do you have to accept a delivery that is almost what you ordered?
If the contract is for the sale of goods, the answer is usually no. Under the perfect tender rule in Section 2-601 of the Uniform Commercial Code (UCC), when the goods or the tender of delivery fail "in any respect" to conform to the contract, you as the buyer may reject the whole shipment, accept the whole shipment, or accept part of it and reject the rest. One wrong detail can be enough to send everything back. This guide explains what the rule covers, the two big limits on it, and how to reject a shipment without losing your rights.
What the Perfect Tender Rule Actually Says
UCC Section 2-601 is short and blunt. Subject to the rules on installment contracts and on contractually limited remedies, if the goods or the tender of delivery fail in any respect to conform to the contract, the buyer may:
- Reject the whole shipment.
- Accept the whole shipment anyway.
- Accept any commercial unit or units and reject the rest.
Note the three things packed into that sentence. First, the trigger is failure "in any respect" — quantity, quality, color, packaging, labeling, delivery date, delivery location, even the paperwork accompanying the goods. A short count of twenty jackets out of 500, the wrong shade of navy, and delivery to the wrong warehouse all count as non-conforming tenders.
Second, the choice belongs to the buyer, not the seller. The supplier cannot force you to keep non-conforming goods at a discount. You decide whether to reject, accept, or split the shipment.
Third, the middle option for splitting works at the level of a commercial unit, not individual items. A commercial unit is whatever the trade treats as a single whole for sale — a set, a dozen, a bale, a carload, a sealed case. If jackets ship in sealed cases of 25 and some cases are perfect while others are damaged, you can accept the good cases and reject the bad ones. But you generally cannot break open a matched set and reject half of it, because dividing it would materially impair its character or value.
Goods Only — Services Play by Different Rules
The perfect tender rule comes from UCC Article 2, which governs contracts for the sale of goods. It has been adopted in every state except Louisiana, which follows its own sales law. Contracts for services — hiring a contractor to renovate your shop, engaging a designer for your logo — are governed by common law instead, where the standard is the far more forgiving substantial performance rule. A contractor who finishes 98 percent of the job can generally collect, minus the cost of the unfinished bit. A goods seller who ships 98 percent of your order cannot: under the perfect tender rule, the missing 2 percent lets you reject the entire delivery.
Mixed contracts for goods and services usually follow whichever element predominates. Buying a point-of-sale system with installation included is typically a goods contract; hiring a consultant who leaves behind a printed report is typically a services contract.
The Seller's Right to Cure: Rejection Is Rarely the Last Word
Here is the part suppliers count on. Rejecting the goods does not automatically end the deal, because Section 2-508 gives the seller a right to cure — to fix the problem and make a conforming delivery. Cure comes in two forms.
Cure within the contract time. If the seller's time for performance has not yet expired, the seller can notify you of the intent to cure and then deliver conforming goods before the deadline runs out. Your purchase order gives delivery "on or before November 20," the non-conforming jackets arrive November 10, and you reject them. The seller can still ship the right jackets by November 20, and you must accept that corrected delivery.
Cure beyond the contract time. Even after the deadline has passed, the seller gets a further reasonable time to substitute a conforming tender if the seller had reasonable grounds to believe the original tender would be acceptable. Reasonable grounds usually come from the parties' history: you accepted slightly off-shade jackets under the last three orders, the seller shipped a pre-production sample you approved, or the contract description was ambiguous and the seller read it the way the trade normally does. In that situation the seller must still notify you seasonably — promptly, in the circumstances — of the intent to cure.
What cure looks like in practice depends on the defect: shipping replacement goods, repairing the goods, sorting the conforming units out of a mixed lot, or offering a money allowance you agree to accept. As the buyer, you cannot unreasonably refuse a proper cure. But you are not helpless while you wait — if the seller misses the cure window, your rejection stands and you can cover by buying substitute goods elsewhere and recover the difference.
The Installment-Contract Exception: When "Any Respect" Does Not Apply
The second major limit is for installment contracts — agreements that require or authorize delivery in separate lots to be separately accepted. A bakery supply contract calling for monthly flour deliveries over a year is an installment contract. A single purchase order for one shipment is not, even if the seller happens to split it across two trucks.
Under Section 2-612, the perfect tender rule does not apply installment by installment. You may reject a single installment only if:
- The non-conformity substantially impairs the value of that installment and cannot be cured, or
- The non-conformity is a defect in the required documents (for example, a missing certificate of origin on an import shipment).
"Substantially impairs" is a much higher bar than "fails in any respect." One short carton in a monthly delivery of two hundred probably does not qualify. A delivery of the wrong grade of flour that your ovens cannot use probably does.
There are two more twists worth knowing. First, if the seller gives you adequate assurance that the defect will be cured, you must accept the installment. Second, a bad installment breaches the whole contract only when it substantially impairs the value of the entire agreement — for instance, the first delivery proves the seller cannot meet your specifications at all. And beware the reinstatement trap: if you accept a non-conforming installment without promptly notifying the seller that you are canceling the contract, or if you sue only over past installments while demanding future ones, the law treats the contract as reinstated.
For small businesses, the practical lesson is to think about which kind of contract you are signing. If you want shipment-by-shipment rejection rights, structure repeat purchases as separate purchase orders rather than one installment contract — each order then gets its own perfect tender rule.
How to Reject Goods Without Losing Your Rights
The right to reject is powerful but easy to fumble. Section 2-602 sets the procedure, and courts enforce it strictly. Follow these steps when a delivery fails to conform.
1. Inspect Within a Reasonable Time
Rejection must happen within a reasonable time after delivery or tender. What counts as reasonable depends on the goods: a day or two for cartons you can open and count, longer for equipment you must install and test. There is no fixed deadline in the statute, which is exactly why delay is dangerous — wait too long and the law deems you to have accepted the goods, which sharply narrows your remedies.
2. Notify the Seller Promptly, in Writing
Rejection is ineffective unless you seasonably notify the seller. Call if you like, but follow up with an email or letter that states you are rejecting the goods, identifies the order and delivery, and describes the defects. Written notice creates the paper trail you will need if the dispute escalates.
3. List Every Defect, Not Just the First One
This is the trap most buyers miss. If you reject for one stated reason but stay silent about another defect that a reasonable inspection would have found, you generally cannot rely on the unstated defect later — at least where the seller could have fixed it had you spoken up. Open every carton, count, measure, and test before you write the rejection notice, and put all of the problems in it.
4. Do Not Use the Goods After Rejecting Them
Once you reject, any exercise of ownership over the goods is wrongful against the seller. Do not sell the jackets, do not put them into production, do not give them away. Using rejected goods can convert your rejection into an acceptance and leave you owing the price.
5. Hold the Goods With Reasonable Care
If the rejected goods are in your possession, you must hold them with reasonable care at the seller's disposition for long enough to let the seller collect them. You do not have to ship them back at your own expense or insure them like your own inventory — just store them sensibly, keep them segregated from your stock, and tell the seller where and when to pick them up. After that, you have no further obligations toward goods you rightfully rejected.
What If You Already Accepted?
Acceptance is not always the end of the story. Under Section 2-608, you may revoke an acceptance when a non-conformity substantially impairs the value of the goods to you — for example, you accepted the jackets because the seller promised the shading issue was limited to the top carton, and it turned out to run through the whole lot, or a hidden defect surfaced only after you put the goods to their intended use. Revocation must come within a reasonable time after you discovered or should have discovered the problem, and before the goods undergo a substantial change. The bar is higher than for rejection, which is one more reason to inspect before you accept.
What Sellers Should Know: Contracts Can Limit the Rule
Section 2-601 applies "unless otherwise agreed" under the remedy-limitation provisions. In plain terms, the parties can contract around the perfect tender rule. Common ways sellers do this include:
- Repair-or-replace clauses that make fixing the goods the buyer's exclusive remedy, cutting off rejection for minor defects.
- Notice-and-cure periods that require the buyer to report defects within a set number of days and give the seller a defined window to fix them.
- Acceptance testing procedures that spell out how conformance is measured, so "fails in any respect" is judged against an objective test rather than the buyer's impression.
- Substantial-conformance language for quantity, such as "quantity may vary by up to 5 percent," which is standard in bulk and commodity trades.
If you sell goods, these clauses belong in your standard terms before a dispute arises. If you buy goods, read the seller's fine print for them — a signed acknowledgment with a repair-or-replace limit can quietly waive the rejection rights this article describes. Either way, put the agreement in writing: the UCC's statute of frauds generally requires contracts for goods priced at $500 or more to be evidenced by a signed writing to be enforceable.
The Bookkeeping Side: Recording a Rejection Cleanly
A rejected shipment is not your inventory and not your payable, and your books should say so. When goods arrive and you book the purchase, then reject the delivery a few days later, reverse the original entry rather than letting a phantom payable sit on your books until the supplier gets around to issuing a credit memo. The reversal keeps your inventory valuation honest and prevents you from accidentally paying an invoice for goods you sent back.
In a plain-text ledger, the purchase and its reversal look like this:
2026-10-15 open Assets:Checking USD
2026-10-15 open Assets:Inventory USD
2026-10-15 open Liabilities:Accounts-Payable USD
2026-10-20 * "Acme Supply" "500 work jackets, PO-1042"
Assets:Inventory 5000.00 USD
Liabilities:Accounts-Payable
2026-10-22 * "Acme Supply" "Reject non-conforming shipment, PO-1042 - wrong shade, short count"
Liabilities:Accounts-Payable 5000.00 USD
Assets:Inventory -5000.00 USDThe October 22 entry debits the payable back to zero and credits inventory down by the same amount, leaving no trace of the rejected goods in either balance. If the seller then cures with a conforming shipment, book that delivery as a fresh purchase on its own date — never by editing the reversed entries, so the audit trail shows the rejection and the cure as the separate events they were. The Beancount documentation covers inventory and payable accounts in more depth if you are setting up this structure for the first time.
One more accounting caution: goods you are merely holding after rejection — stored in your warehouse awaiting the seller's carrier — are not your assets. Do not count them in a physical inventory, and if the amounts are material, keep the rejection notice with your month-end files so your accountant knows why the supplier's statement shows an invoice your ledger does not.
Your Next Delivery, Handled Right
The perfect tender rule puts real leverage in a buyer's hands: goods that fail the contract in any respect can be sent back in whole or in part. But the leverage only works if you move quickly and by the book — inspect promptly, reject in writing, name every defect, keep your hands off the goods, and store them sensibly until the seller retrieves them. Sellers, for their part, keep the right to cure and the freedom to negotiate saner remedy limits up front. Whichever side of the loading dock you stand on, write the procedures into your contracts now, while every delivery still conforms.
