You audit invoices by comparing what you were charged against what you agreed to pay, item by item, on your highest-volume products. Most overcharges are not fraud, they are drift: a contracted price that never got loaded into the system, a substituted item that fell outside your agreement, a case pack that changed size, a credit that was promised and never issued. A monthly check of your top 25 items against your contract catches the large majority of it, and every dollar you recover is margin you already earned. Here is how to run that check, what to look for, and how managed procurement turns it from a chore into a standing process.
Why do foodservice invoices drift away from your contracted prices?
Because a contract is a document and an invoice is a database record, and the two are updated by different people at different times. A distributor's pricing file holds tens of thousands of items across thousands of customers, and it changes constantly as manufacturer agreements start, expire, and get renegotiated. When a contracted price fails to load, nobody gets an alert. The system simply falls back to market pricing and the invoice looks completely normal. That is the whole problem: an overcharge does not look like an error, it looks like an invoice.
What are the most common overcharges on a distributor invoice?
In practice, the same handful of issues account for most of what operators find:
- Contracted price not applied. The item is on your agreement, but the invoice bills it at market. This is the single most common finding and usually the largest.
- Substitutions billed off-contract. Your item was out of stock, a comparable product shipped in its place, and the substitute carried no contracted price.
- Pack or size changes. The item number stayed the same but the case went from 6/5 lb to 4/5 lb. Your price per case looks flat while your price per pound quietly rose.
- Credits never issued. Short deliveries, damaged product, and rejected items get logged by the receiving door and then never reconciled against the statement.
- Fees added outside the pricing agreement. Fuel surcharges, small-order fees, and delivery minimums that were waived in negotiation and reinstated in the file.
- Deviations and allowances applied after markup instead of before. The math looks right on the surface and costs you on every case.
How do you actually run an invoice audit?
You do not need software to start. You need one month of invoices, your current agreement, and about two hours:
- Pull a purchase detail report from your distributor's portal for one full month, exported to a spreadsheet rather than PDF.
- Sort by total dollars spent and take the top 25 items. Those items usually carry the bulk of your spend, so that is where the money is.
- For each one, find the contracted price in your agreement and compare it against every price you were billed that month.
- Flag any item whose price moved mid-month without a notice, and any item you cannot locate on the agreement at all.
- Check the same list for pack size changes by comparing unit price, not case price, month over month.
- Reconcile your credit memos against your delivery exception log, then send one consolidated claim to your rep rather than a trickle of emails.
Do that for three consecutive months and you will know whether you have a one-off loading error or a systemic gap. The pattern matters more than any single line.
How far back can you claim an overcharge?
That is set by your agreement, not by custom, and it is one of the most overlooked clauses in a distribution contract. Most agreements define a window for disputing an invoice or claiming a credit, and once it closes the money is gone regardless of who was right. Read your claim window before you need it, and calendar your audit to run comfortably inside it. If your agreement is silent on the point, that is worth fixing at renewal.
What is a recovered dollar actually worth?
Far more than it looks, because it is pure margin. A recovered overcharge carries no food cost, no labor, and no cost of sale, so it drops straight to the bottom line. At a 5% net margin, recovering $1,000 does the same work as generating $20,000 in additional sales. That is the arithmetic that makes invoice auditing worth a standing calendar slot: you are not chasing pennies, you are recovering the most profitable dollars in the building.
Why does this matter more in 2026?
Because there is no room left in the margin to absorb it. The National Restaurant Association's 2026 State of the Restaurant Industry report found that 42% of operators said their restaurant was not profitable last year, and that more than 9 in 10 operators cite food, labor, insurance, energy, and swipe fees as significant challenges (National Restaurant Association, 2026 State of the Restaurant Industry). The Association's chief economist, Dr. Chad Moutray, put it plainly: "Success for operators this year will hinge on their ability to get the math right in a still-challenging economic environment." Invoice accuracy is the most literal version of getting the math right there is.
Can you automate invoice auditing?
Yes, and at any real volume you should, because the manual version breaks down exactly where it matters. A four-location operator buying 900 items across three distributors cannot spot-check its way to compliance, and the errors that hurt most are the small per-case ones repeated every week. Automated price-compliance checking compares every line on every invoice against the contracted price and flags the exceptions, so a person only reviews what actually failed. The goal is not more spreadsheets, it is a shorter list of real problems.
Where does managed procurement fit?
It puts the audit on someone else's calendar, and removes the conflict of interest that usually sits inside it. CORE Insights Group is not a GPO, it is the more operator-favorable alternative to one: a single transparent agreed fee, no markup on what you buy, and 100% of rebates passed back to you, so no part of your spend quietly funds the partner reviewing it. That matters here specifically, because a partner paid out of your spend has no reason to hunt for the overcharge inside it. Behind the work sits real scale, more than $15B in leveraged purchasing volume, over 50,000 cost-controlled items, and a team with 100+ years of combined procurement experience, applied for operators including Sonesta, Specialty Restaurants Corporation, and Gecko's Hospitality Group across hotels, restaurants, and clubs through CORE360 and, for country and social clubs, CLUB360.
"At the heart of CORE is a company that wants to drive value to the companies that deserve it. With complete transparency. No side hustles, no dollars that get siphoned off on the side." Ross Kellman, co-founder, CORE Insights Group
Do you need to change distributors to fix this?
Almost never. A pricing error is a file problem, not a relationship problem, and switching distributors resets your specs, your delivery windows, and the rep who knows your kitchen without fixing the underlying discipline. The fix is visibility and a claim you can back up, applied to the distributors you already use. That approach is covered in more depth in can CORE work with any distributor, and the money that sits off-invoice is covered in do GPOs keep rebates, or pass them back.
Where should you start?
Pick last month, pull the purchase detail, and check the top 25 items against your agreement. If everything matches, you have spent two hours buying real confidence in your food cost number. If it does not, you have found money that was always yours, plus a reason to check the other eleven months. Either outcome is worth the morning, and the broader playbook is laid out in how to reduce restaurant food costs.
Frequently asked questions
How do I know if my distributor is overcharging me?
Compare your invoices line by line against your pricing agreement, starting with your top 25 items by spend. Look for contracted prices that were not applied, substituted items billed at market, pack size changes that raise your cost per pound while the case price looks flat, promised credits that were never issued, and fees that your agreement says were waived.
What is the most common foodservice invoice error?
A contracted price that never loaded into the distributor's pricing file, so the item bills at market instead. It is common because nothing about the invoice looks wrong when it happens, and it is usually the largest single category of recovery in an audit.
How often should I audit my foodservice invoices?
Monthly is the practical cadence for most operators, because it keeps the volume of lines manageable and stays inside the claim window that most distribution agreements set for disputing an invoice. Reviewing three consecutive months tells you whether you are dealing with a one-off loading error or a systemic gap.
How far back can I claim a credit for an overcharge?
It depends on your agreement. Most distribution contracts define a window for disputing an invoice or claiming a credit, and once that window closes the money is generally unrecoverable no matter who was right. Find that clause before you need it and schedule your audit to run comfortably inside it.
Is recovering an overcharge really worth the time?
Yes, because a recovered dollar is pure margin with no food cost, labor, or cost of sale attached. At a 5% net margin, recovering $1,000 contributes as much to the bottom line as $20,000 of additional sales, which is why invoice auditing earns a standing slot on the calendar rather than an occasional spot check.
Is CORE Insights Group a GPO?
No. CORE is a managed procurement partner and the more operator-favorable alternative to a GPO. Instead of being paid out of your spend or keeping rebates, CORE runs on one transparent agreed fee, takes no markup on what you buy, and passes 100% of rebates back to you, while keeping the distributors you already use.