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Invoice Forensics · Any Business · Any Industry

If you buy from
suppliers, we can
read your invoices.

You do not need a contract. You do not need a quote. You need invoices. Every number is already there — the problem is there is no second document in the room to compare it against. The Ledger is that document.

68%
of businesses see errors on 1%+ of invoices · IOFM
1–3%
of services spend lost to overbilling annually
217
avg invoices/month for a typical SMB · AMI-Partners
41%
of companies have line-item spend visibility · Hackett Group
🇺🇸 American-Built ✓ No Contract Required ✓ Every Finding Sourced
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Who This Serves

Three client situations.
One requirement: invoices.

The Ledger does not require a prior contract, a negotiated rate sheet, or a formal quote to begin. The invoice is the record. We read the record.

Situation 01
You have a written agreement with your supplier.
A contract, a rate sheet, a pricing schedule — something in writing that established what you were supposed to pay. The Ledger compares every invoice line item against three things simultaneously: your agreement, the commodity market data for that product category at the time of billing, and the fee structure your account was supposed to carry. All three documents in the room at once.
What We Produce: Line-by-line comparison of invoiced price vs. contracted price vs. commodity index. Every discrepancy documented with date, line item, delta, and source citation.
Situation 02
You have a verbal agreement or a handshake understanding.
Your supplier said they would take care of you. You trust the relationship. Business is good, so you pay the invoice. The Ledger builds the picture from your invoices alone — unit price per SKU over time, what the commodity market was doing during that same period, fee lines that appeared without explanation. That picture becomes a number. A number you can bring to your supplier and have a conversation with facts behind it.
What We Produce: Pricing baseline from your actual invoice history. Commodity movement comparison. A documented starting point for renegotiation.
Situation 03
You have no agreement. Just invoices.
Most businesses are here. They order, receive, and pay. Nobody negotiated a rate. Nobody established a baseline. The Ledger still works. We track unit price per line item across your invoice history, map commodity movements for every applicable product category, identify fee lines that appeared or grew, and surface the billing pattern over time. The output is visibility — what you are actually paying, how it has changed, and where it diverges from market data.
What We Produce: Complete unit price history by SKU. Commodity comparison. Fee inventory. A factual baseline that did not exist before the audit.
The Scale of the Problem

Invoice errors and overcharges
are not edge cases.

These figures come from accounts payable research across industries — not construction, not one sector. Every business that receives supplier invoices is in this data.

68%
of businesses see errors on 1%+ of invoices · IOFM / Ardent Partners
39%
of invoices contain errors · Institute of Finance & Management
41%
of companies have line-item spend visibility · Hackett Group 2024
50–70%
of overpayments are never recovered · Peakflo / AP Research

Peakflo documents the cost directly: companies overpay vendors on 0.5–1.5% of invoices, producing losses of $250K–$750K annually for mid-sized organizations processing $50M in AP. ValueXPA puts vendor overbilling at 1–3% of services spend for mid-market companies. SC&H Group notes that 1–2% of invoices are duplicated even in organizations with automated systems. The errors are not concentrated in any single industry. They appear wherever invoices are reviewed by volume rather than by line item against a second source.

Industries We Serve

Any business with recurring
supplier or distributor invoices.

The mechanism is the same regardless of what the invoice covers. A supplier issues a document. A business pays it. Nobody compares unit prices against a second source.

🍽️
Restaurants & Foodservice
Sysco · US Foods · Gordon Foodservice · PFG
Ingredients represent 25–40% of restaurant sales. Most restaurants source through broadline distributors like Sysco and US Foods ($39.4B FY2025) — companies managing thousands of SKUs across volatile commodity categories including proteins, produce, oils, and dairy. Pricing on broadline invoices changes by SKU, by delivery, and by period. Nobody at the restaurant is tracking unit prices against USDA or BLS food commodity indices week over week.
🏨
Hotels & Hospitality
Sysco · US Foods · HD Supply · Ferguson · Grainger
Hotels carry multiple distributor accounts simultaneously: food and beverage through broadline distributors, maintenance and repair through MRO suppliers like Grainger or Ferguson, linen and cleaning through specialty distributors. Each account operates on its own pricing tier. Each invoice arrives on its own schedule. The aggregate picture — what the property is actually paying across all suppliers and how it compares to commodity data — exists nowhere until it is built.
🏭
Manufacturing
Grainger · MSC Industrial · Fastenal · WESCO · Applied Industrial
Manufacturing AP departments processing invoices manually experience error rates of 12–15%, including duplicate billings, rate misapplication, and accessorial charges for services not rendered (APQC, 2024). MRO and raw material invoices across Grainger, MSC, and Fastenal carry account-tier pricing that is set once and reviewed rarely — while commodity costs for metals, cutting tools, and industrial supplies move monthly.
🏥
Healthcare Facilities
Medline · Cardinal Health · Sysco · Grainger · HD Supply
Group purchasing organization (GPO) contracts are designed to protect healthcare buyers — but the contract is only as good as what actually appears on the invoice. Medical supply, food service, and MRO invoices at hospitals, clinics, and long-term care facilities frequently carry charges that do not match GPO pricing. The volume and complexity of healthcare procurement makes line-item verification difficult. That is the condition under which errors accumulate.
🏪
Retail & Grocery
C&S Wholesale · UNFI · KeHE · McLane
C&S Wholesale Grocers supplies independent supermarkets and chains with over 140,000 products. UNFI and KeHE operate at comparable scale for natural and specialty retail. Pricing across 140,000 SKUs against volatile commodity categories — produce, dairy, proteins, packaged goods — produces billing complexity that no AP department reviews at the line-item level on a recurring basis.
🏫
Institutions & Government
Sysco · US Foods · Grainger · Fastenal · W.W. Grainger
Schools, universities, municipalities, and government facilities operate under procurement rules that assume contracts protect them. Contracts set the ceiling. They do not automatically adjust when commodity prices fall below the contracted rate, when surcharges are applied outside the contract scope, or when substituted items are billed at a different price than the specified product.
🔧
Trade Contractors
Ferguson · White Cap · Fastenal · Winsupply · Hajoca
Electrical, plumbing, HVAC, roofing, concrete, irrigation, mechanical, and landscaping contractors. The original Ledger vertical. Commodity-indexed invoice forensics against BLS PPI data, account-tier pricing verification, and multi-supplier aggregation. See the trade-specific pages for detailed commodity and supplier analysis by trade.
🏢
Property Management
Ferguson · HD Supply · Grainger · Waxman Industries · Hajoca
Property managers purchase maintenance supplies, HVAC components, plumbing parts, and janitorial products across multiple properties and multiple supplier accounts. Each property may carry its own account relationship. The aggregate billing picture across a portfolio — and how that pricing compares to commodity data — is visible only when someone builds it.
📦
Any Business with Recurring Supplier Invoices
Any distributor · Any vendor · Any recurring account
If your business places recurring orders with a supplier or distributor and pays invoices without comparing unit prices to a second source, the Ledger applies. The industry is not the determining factor. The invoice is.
How It Happens

Hiding in plain sight.

The numbers are not concealed. They are on the invoice. The problem is there is nothing to compare them against until someone builds that comparison.

Step 01 — Supplier Prepares Invoice
The distributor's billing system applies the current base price for each SKU, adds any applicable fees, and generates an invoice. That base price is set by the distributor. It reflects their pricing inputs — which are not automatically synchronized with commodity markets or with your account agreement in real time.
Step 02 — Invoice Arrives
The invoice lands in accounts payable. It looks like last month's invoice. The total is in the expected range. There are no obvious errors. The typical SMB processes ~217 invoices per month, with accounting staff spending ~12 hours per week on invoice processing (AMI-Partners). At that volume, line-item review against commodity indices does not happen.
Step 03 — Invoice Is Approved and Paid
The invoice is approved by total, not by line item. Payment goes out. SC&H Group documents that contracts are negotiated to protect margins, but invoices do not always reflect agreed terms — and without ongoing oversight, rate creep and missed discounts quietly erode savings.
Step 04 — The Pattern Repeats
Next month. Same supplier. Same process. A fuel surcharge that was never justified stays on the invoice. A base price that should have dropped when the commodity fell stays at the prior level. A fee that appeared 14 months ago is still there. Staffing rate drift, for example, compounds at $1–$3 per unit per period until cumulative drift exceeds 10% of the original rate over 24 months — and the same pattern occurs in product pricing.
Step 05 — The Ledger Puts a Second Document in the Room
We take your invoices, identify every recurring line item, pull the applicable commodity or market data for each product category, compare what was billed against what the data says it should have been, and document the delta. Every finding is traced to its source. The result is a structured report — date, line item, amount billed, verifiable reference price, discrepancy.
On Verbal Agreements and No Agreements

Many business owners operate on a handshake with their supplier. The supplier said they would take care of them. Business is good. The relationship feels solid. The invoice gets paid without question because questioning it feels like distrust.

The Ledger does not require a written agreement to work. We build the baseline from your invoice history. Unit price per SKU over time is itself a document. When that baseline is placed next to commodity market data — BLS PPI series, USDA food price indices, EIA fuel data — the comparison produces findings regardless of whether a contract existed.

The output is a factual document. A business owner can take it to their supplier and have a conversation with numbers behind it instead of a feeling.

Overcharge Patterns

Six patterns that appear
across every industry.

These are not construction-specific or trade-specific. They are the structural conditions under which supplier invoices diverge from what the market or agreement says they should be.

Pattern 01
Price Persistence After Commodity Decline
When commodity prices rise, distributor invoice prices rise promptly. When commodity prices fall, invoice prices do not always follow at the same speed. The asymmetry is documented across AP recovery audit research as price persistence — the invoiced price remains at the prior-period level after the underlying input cost has moved down.
Example: A broadline food distributor continues invoicing cooking oil at a price established when soybean oil was $0.72/lb. Soybean oil had moved to $0.58/lb per USDA commodity data. The invoice price had not been adjusted. 11 months of deliveries at the prior rate.
Pattern 02
Fuel Surcharge Persistence
Delivery surcharges tied to diesel pricing are applied when fuel is expensive and forgotten when fuel falls. Misapplied fuel surcharges are among the top five billing errors documented across mid-market companies. They persist because they look like a normal line item, they are a small percentage of the total, and nobody compares the surcharge rate to EIA retail diesel pricing for the same period.
Example: Fuel surcharge of 3.8% applied to all deliveries for 16 months. Diesel pricing per EIA data had declined from $4.40 to $3.15/gal during that period. Surcharge rate had not been adjusted.
Pattern 03
Rate Creep on Recurring Accounts
Vendors increase bill rates incrementally — $1–$3 per unit every 6–12 months — without formal contract amendments. Each increase stays within the prior period's range. Over 24 months, cumulative drift can exceed 10% of the original rate. This pattern appears in product pricing as well as service pricing. No single invoice triggers a dispute because no single invoice shows a large jump.
Example: A restaurant's weekly produce invoice showed unit price increases of $0.08–$0.14 per item across 22 SKUs over 18 months. Individually invisible. In aggregate, 8.3% above the price at account open — during a period when the relevant USDA produce commodity indices were flat to down.
Pattern 04
Duplicate Billings
Research suggests 1–2% of invoices are duplicated, even in organizations with automated systems. Duplicate detection fails when invoice numbers are formatted differently across the same vendor's billing system (INV-2024-001 vs INV/2024/001), when the same delivery is invoiced across two billing periods, or when two accounts at the same distributor bill for overlapping deliveries.
Example: A hotel property received 6 duplicate billing instances across 4 supplier accounts over 12 months — each formatted with slightly different invoice numbering. AP had approved all 6. Total duplicate spend: $4,840.
Pattern 05
Fees Billed Outside Agreement Scope
Handling fees, small-order processing fees, restocking fees, and expediting charges are commonly billed as separate line items outside the product pricing structure. They accumulate across high-frequency, small-quantity orders. A business paying invoices by total rather than by line item will not notice a $22 handling fee on an $800 order — but 40 such orders in a quarter is $880 in fees that may not be covered by any agreement.
Example: A manufacturing facility's MRO supplier had added a $28 small-order processing fee to all orders under $500. The fee had appeared 31 times over 9 months. It was not in the original account agreement. Total: $868.
Pattern 06
Billing Continuation After Agreement Change
When a service is cancelled, a contract is renegotiated, or a product line is discontinued, billing does not always stop or adjust at the same moment. Vendors may continue billing past the cancellation date, sometimes for months or years after the business has moved on. The same pattern occurs when a new pricing agreement is signed — the old rate may continue to appear on invoices until someone catches it.
Example: A business renegotiated its supply contract in March. The new pricing took effect April 1. Invoices through August continued at the prior rate. The distributor's account system had not been updated. Five months of billing at the superseded rate.
What the Ledger Produces

A structured findings report.
Regardless of your starting point.

The output is the same whether you came in with a written contract or nothing but a stack of invoices. Every finding is documented. Every finding is sourced.

Unit Price History by SKU
Every recurring line item tracked over time. What the price was when the account opened, what it is now, and every change in between. This baseline does not exist anywhere until we build it — and it is the foundation for every other finding.
Commodity Comparison
For every applicable product category, the relevant commodity index data is pulled for the same period — BLS PPI series via FRED, USDA food price data, EIA diesel pricing. Invoice unit prices are compared against market movement. Where the invoice price diverges from the commodity trend, the discrepancy is documented with source and date.
Fee Inventory
Every fee line item identified, named, and dated from its first appearance. Fuel surcharges, handling fees, small-order fees, delivery premiums, restocking charges — all inventoried against what the account agreement covers, or against the absence of any agreement that authorized them.
Contract Compliance Review
Where a written agreement exists, every invoice line item is checked against contracted terms. Price, quantity, fee structure, discount tier. Discrepancies between what the contract says and what the invoice charges are documented as findings with the relevant contract clause cited.
Duplicate and Overlap Detection
Invoice numbers, amounts, dates, and delivery records cross-referenced across the full invoice history. Duplicates flagged with documentation showing both instances. Useful as an immediate recovery document — these are charges the supplier is obligated to credit.
Findings Report: Structured and Sourced
All findings compiled in a single structured document. Each finding states: the date range, the line item, the amount invoiced, the reference price or contracted rate, the delta, and the source for the reference price. The report is built to be shared with your supplier. It is a factual document, not an accusation.
Sources
IOFM / Ardent Partners · via Optimus
68% of businesses see errors on 1%+ of invoices; 61% of finance leaders cite lack of line-item visibility as a major challenge
Institute of Finance & Management · via Ascend
39% of invoices contain errors; average manual invoice processing cost $15 vs $2.36 automated
Peakflo · 2026
Companies overpay on 0.5–1.5% of invoices — $250K–$750K/year for mid-sized orgs; only 30–50% recovered
ValueXPA · May 2026
Vendor overbilling costs mid-market companies 1–3% of services spend annually; top 7 documented patterns
Hackett Group 2024 · via Zero Down Supply Chain
Only 41% of companies have visibility into line-item spend vs. 93% for top-performing organizations
SC&H Group · Oct 2025
1–2% of invoices duplicated even in automated systems; rate creep and missed discounts erode contract savings
DiscoverDollar · Nov 2025
Cost overcharges and PO-invoice mismatches among the most frequent claims in AP recovery audits
AMI-Partners · via Invoiceless · Mar 2026
Typical SMB invoice volume: ~217/month; accounting staff spend ~12 hours/week processing invoices
APQC 2024 · via FreightOptics
Manufacturing AP invoice error rates 12–15% for manual processing; duplicate billings, rate misapplication, accessorial errors
Umbrex · Restaurant Industry Analysis
Ingredients represent 25–40% of restaurant sales; most restaurants source through broadline distributors
Orders in Seconds · 2026
US Foods: ~$39.4B revenue FY2025, 300,000+ end users; Sysco: world's largest food distributor, 650,000+ clients
Limitless Technology
Billing past cancellation date, incorrect rates, services not requested — vendor billing errors documented across industries
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