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Invoice does not match the quote

Paskutinį kartą tikrinta 7 September 2026 · Šis puslapis pateikiamas anglų kalba.

When an invoice does not match the quote, check in this order: which quote or price list was in force on the delivery date, unit against pack price, a substituted code, quantity, rounding, currency, then freight. Price Double Check runs these checks: forward the quote or price list and the invoice by email and the differing lines come back.

When an invoice does not match the quote, the cause is one of seven things, and six of them can be settled from the two documents you already have. The seventh, freight and surcharges, can only be shown. Below is the order we use, why it is that order, and the four numbers a supplier needs to issue a credit note without a second round of email.

Why the order of checks matters

A purchaser who starts at the top of the invoice and reads down finds the cause eventually. A purchaser who starts with the most likely cause finds it in a minute. Ramp's guide to invoice discrepancies puts price discrepancies first among the types it lists, with the classic case being a vendor billing at list price instead of the negotiated price, and names outdated pricing and vague purchase orders among the usual causes. Our own validation chain agrees: of 382 invoice lines compared for a Baltic distributor, 41 were real price differences, and the biggest single one, a line billed 17.75 percent over the price list, ate 91 percent of the margin of that delivery. Nobody had noticed it by reading the invoice, because the invoice looked normal. It only looked wrong next to the price list.

Seven checks when an invoice does not match the quote

1. Which quote or price list was in force on the delivery date. Suppliers issue a new price list with an effective date and often a price protection clause for orders placed before it. If the invoice is dated after the effective date and the order before it, the quoted price applies. If a newer price list exists and you never received it, that is the cause in itself: in our validation chain a 2024 price list was simply never sent, and the invoices were right against a document the buyer had never seen.
2. Unit price against pack price. A quote of 0.40 per unit and an invoice of 9.60 per pack of 24 agree. A quote per case and an invoice per unit of a different case size do not, and the invoice will not say which it used. Divide the billed price by the units per pack on the price list before calling it a difference.
3. A substituted item code. The description on the invoice can match the quote while the code does not: a 550 ml pack quoted at 2.07 arrives as an 800 ml pack at 2.59 under a neighbouring code, and the invoice reads as a small increase rather than a different product. Compare codes, never descriptions: on our validation set 335 of 442 lines had a description that did not match the price list wording for the same code.
4. Quantity. Billed quantity against ordered quantity, then against delivered. Watch the unit: some order forms count boxes and the invoice counts units, so 1 on the order can legitimately be 240 on the invoice. A quantity that differs is a finding; whether it is a short delivery is a question for the warehouse, not for the invoice.
5. Rounding. Price lists carry four decimals, invoices two. A quoted 2.205 billed as 2.21 is half-up rounding, not a price rise. One cent per unit is tolerance; anything beyond it is a difference.
6. Currency. A quote in one currency and an invoice in another are compared at the rate the supplier applied, which should be printed. If it is not printed, ask for it before disputing a line.
7. Freight, fuel surcharges, handling and packaging. These are the lines with no reference price in either document. PartnerShip's note on freight quotes lists accessorial fees, reclassification, a lapsed quote and a changed delivery address as the usual reasons a freight invoice exceeds its quote, and calls most of them shipper-side. Show the amount and its share of the goods value. Do not judge it from the invoice alone.

What each check looks like in a table

The point of a table is that every difference has a cause you can name and a number you can quote. This is the shape we return for each invoice; the rows are typical, not from one real document.

Every row states what was compared and what was found; none of them says who is at fault. A price above the list in force is a difference against you. A rounding of half a cent is not. A freight line is a fact to raise with the supplier against the incoterm in your agreement, and the invoice has no way of settling it.

The note that gets a credit note

A supplier issues a credit note against specific lines, so the note that gets one names them. A message that says the invoice seems high gets a reply asking which lines. A message that carries five facts per line gets a credit note or a corrected invoice, usually by return. For each line disputed, give:

• The invoice number and the line, as the supplier printed them.
• The item code, so nobody argues about the description.
• The quoted price and the document it comes from: quote number or price list date.
• The billed price as printed on the invoice.
• The difference per unit, the quantity, and the total you expect to be credited.

One paragraph is enough: invoice INV-1042, line 4, code 5046, quoted at 11.235 on your price list of 12 January, billed at 13.23, difference 1.995 on 24 units, credit of 47.88 requested. Then say which you want, a credit note or a replacement invoice, and that you will pay the undisputed lines on the normal terms. Ramp's guidance is the same: hold the payment, send the specific discrepancy with supporting documents, ask for a corrected invoice or a credit memo, and log the outcome. Keep the credit note with the invoice it corrects; a credit note that references the wrong invoice number is a new mismatch.

The forward that returns the table

The seven checks above are what Price Double Check runs on every invoice, in that order, and they need nothing more than the documents in your mailbox. You forward the quote or price list once, then each invoice as it arrives, to your own forwarding address. The reply says what it read, confirms that the invoice's line sums equal its printed total to the cent, and lists the lines that differ: code, description, quantity, billed price, expected price, delta, and whether it is in your favour or against you. Lines it could not match are listed with their amounts, so a code that is on no price list is reported as unmatched rather than as a difference.

Matching is by item code within a supplier, deterministically. A quote with the same code as the invoice gives a comparison; a quote that only carries descriptions does not, and the reply says so. Suffixes that suppliers add to codes are normalised, three versions of one invoice number with three different totals are reported as a version conflict, and a pack that shrank at the same price shows up when you forward the next price list, because the invoice never prints pack size. The checks on freight and on units of measure come back as amounts to show, never as a verdict, which is the rule we keep for anything the two documents cannot settle.

If you also forward your purchase order from Sent, the reply compares it with the invoice as well, which is the fastest way to tell a price mismatch from a substitution or a quantity mismatch; the method is on compare a purchase order with an invoice. For a quote that is a full price list rather than a one-off, the general method is on compare an invoice with a price list, and the reasons a parser alone does not give you an answer are in a parser is not an answer.

What the invoice alone cannot tell you

Three reasons an invoice does not match the quote are invisible without a second document. A price that quietly became the new normal: one bar billed at 1.26 from March against a list price of 1.176, with 1.26 appearing on a price list only in October. A pack size that shrank at the same price, which only two price lists side by side reveal. And a price list you were never sent, which shows up as a run of invoices that all disagree with the last list you have. The first two arrive as a digest across invoices and price lists rather than per invoice; the third is a question to put to the supplier in the same note as the credit request.

Forward one invoice and the price list to your address and the lines that differ come back by email, with the numbers a credit note needs.