Work
Every carrier bill audited line by line against your own contracts and tariffs before you pay: what to approve, what to hold back, the written notice, the report your accounts payable pays from.
Electronic freight bills only, read and audited by ZetaVolt’s own software:
Not audited: paper bills, scans, photos and faxes — ZetaVolt does not key bills in by hand.
You pay only for the bills ZetaVolt reads and audits: a file or bill it cannot read is refused and never charged.
Each bill is checked line by line against the contracts, tariffs and fuel tables you bring in: the rate, the discount, the minimum, the fuel surcharge, every accessorial, the freight class and duplicates. You get what to approve, what to hold back and why, the written notice for the carrier, and the report your accounts payable pays from.
ZetaVolt audits the bill and tells you what to pay. You pay the carrier; ZetaVolt never holds or moves your money.
Audit your own electronic bills before you pay them: sign up your business for the pre-audit, pay as you go — 55¢ per bill audited, 50¢ from 10,000 bills a month, 45¢ from 100,000 bills a month.
Sign up for the pre-auditSample Shipper Inc.’s agreement with a carrier and nine of its bills from the last month, audited exactly as yours are: approved, held back, billed twice, contested, paid, recovered, and one from a carrier with no contract on file. Tap a bill to open it with its evidence. Names, addresses and account numbers are blacked out.
Bills audited
9
Billed
$3,412.00
Approved to pay
$2,817.00
Held back
$595.00
Bills with errors
7 (78%)
Billed twice
1
Contested
1
Recovered
$35.00
Approved $2,817.00 · held back $595.00 of $3,412.00 billed · 7 of 9 bills with an error · 1 billed twice · 1 with no contract on file.
| PRO | Carrier | Billed | Approved | Held back | What was found |
|---|---|---|---|---|---|
| EXF-220118 | Example Freight Lines | $360.00 | $360.00 | $0.00 | Approved — every line matches the contract |
| EXF-220131 | Example Freight Lines | $391.00 | $381.00 | $10.00 | Held back — Liftgate billed $85.00; the contract says $75.00. |
| EXF-220118 | Example Freight Lines | $360.00 | $0.00 | $360.00 | Duplicate — This bill (PRO EXF-220118) was already received from Example Freight Lines. |
| EXF-220140 | Example Freight Lines | $645.00 | $540.00 | $105.00 | Held back — Discount billed $975.00 on $1,500.00; the contract gives 72% ($1,080.00). |
| EXF-220152 | Example Freight Lines | $371.00 | $306.00 | $65.00 | Held back — Residential billed $120.00; the contract says $90.00. notify charge ($35.00) is not in the contract's accessorial schedule. |
| EXF-220163 | Example Freight Lines | $432.00 | $432.00 | $0.00 | Paid — every line matches the contract |
| EXF-220170 | Example Freight Lines | $365.00 | $345.00 | $20.00 | Contested — Liftgate billed $95.00; the contract says $75.00. |
| EXF-220174 | Example Freight Lines | $434.00 | $399.00 | $35.00 | Recovered — Liftgate billed $110.00; the contract says $75.00. |
| SPC-77810 | Sample Parcel Co | $54.00 | $54.00 | $0.00 | No contract yet — No contract or tariff for Sample Parcel Co on 2026-10-29: nothing to check the rates against. |
Example Freight Lines · Freight invoice
PRO EXF-220118 · SCAC EXFR
Invoice date 2026-10-11 · Ship date 2026-10-06
Bill-to account
Shipper: Sample Shipper Inc. · · ZIP 33602
Consignee: · · ZIP 30301
1,200 lb · class 70 · LTL
BOL · PO
| Freight | $1,000.00 |
| Discount | $-720.00 |
| Fuel surcharge | $80.00 |
| Total billed | $360.00 |
Blacked out: bill-to account, shipper street address, consignee name, consignee street address, bol number, purchase order number.
Approved — approve $360.00, hold $0.00
Every line matches the contract: the discount, the minimum and each accessorial.
Transportation Agreement between Sample Shipper Inc. and Example Freight Lines (SCAC: EXFR). A discount of 72% off the base rate. Absolute minimum charge of $95.00 per shipment. Fuel surcharge table: $3.50 - $3.59 22% ; $3.60 - $3.69 23% ; $3.70 - $3.79 24%. Accessorials: Liftgate service $75.00; Residential delivery $90.00. Disputes: any charge must be disputed within 90 days of the invoice.
Open the sample bills one by one
The agreement read: discount 72%, minimum $95.00, 2 accessorials, 90 days to dispute. Nothing is saved.
The freight market today
Diesel, truckload and LTL prices, truck tonnage and more — public figures read once a day. Your own audit numbers, the whole market and what is published are on Analytics.
Updated 1 hour ago · updates once a day for visitors and on the Free plan; the $10 and $20 plans update every 12 hours, plans from $99 every 6 hours, plans over $1,000 every hour.
Diesel, U.S. average
$6.292/gal
week of Nov 2, 2026
−0.9% vs week of Oct 26, 2026
+67.7% vs week of Nov 3, 2025 (unfavourable for you)
Crude oil (WTI)
$99.64
Nov 3, 2026
−0.4% vs Nov 2, 2026
+61.3% vs Nov 3, 2025 (unfavourable for you)
LTL freight prices
319.9
Sep 2026
+4.2% vs Aug 2026
+19.8% vs Sep 2025 (unfavourable for you)
Truckload freight prices
219.4
Sep 2026
+4.6% vs Aug 2026
+17.9% vs Sep 2025 (unfavourable for you)
A file from this device (EDI 210, 110, 310 or 410, a CSV or spreadsheet from the carrier’s portal, JSON, a PDF bill), pasted bills, your own address that any system can POST to, or an EDI mailbox. Every bill is audited line by line the moment it arrives.
Your own bills. Auditing your own bills comes with Freight Billing, pay as you go — 55¢ per electronic bill audited, 50¢ from 10,000 bills a month, 45¢ from 100,000 ($10 a month at least). Until then, try it on the sample bills.
Nothing is saved for visitors. Try the sample audit here (a duplicate bill and an overcharge caught), then make a free account: it audits up to 10 of your own bills with the full pre-audit, free.
Bills audited
9
Billed
$3,412.00
Approved to pay
$2,817.00
Held back
$595.00
Bills with errors
6 (66.67%)
Contest within 30 days
0
Contested
1
Recovered
$35.00
What was wrong: Billed twice 1 ($360.00) · Accessorial not in the contract or above it 5 ($130.00) · Discount not applied as agreed 1 ($105.00) · No contract to check against 1 ($0.00)
AllHeld backContestedNo contractApprovedDuplicatesPaid
| Carrier | PRO / invoice | Date | Billed | Pay | Held | Status | Contest by |
|---|---|---|---|---|---|---|---|
| Sample Parcel Co | SPC-77810 | 2026-10-31 | $54.00 | $54.00 | — | No contract yet | — |
| Example Freight Lines | EXF-220174 | 2026-10-28 | $434.00 | $399.00 | $35.00 | Recovered | 2027-01-26 |
| Example Freight Lines | EXF-220170 | 2026-10-26 | $365.00 | $345.00 | $20.00 | Contested | 2027-01-24 |
| Example Freight Lines | EXF-220163 | 2026-10-23 | $432.00 | $432.00 | — | Paid | — |
| Example Freight Lines | EXF-220152 | 2026-10-20 | $371.00 | $306.00 | $65.00 | Held back | 2027-01-18 |
| Example Freight Lines | EXF-220140 | 2026-10-16 | $645.00 | $540.00 | $105.00 | Held back | 2027-01-14 |
| Example Freight Lines | EXF-220118 | 2026-10-13 | $360.00 | $0.00 | $360.00 | Duplicate | 2027-01-11 |
| Example Freight Lines | EXF-220131 | 2026-10-11 | $391.00 | $381.00 | $10.00 | Held back | 2027-01-09 |
| Example Freight Lines | EXF-220118 | 2026-10-09 | $360.00 | $360.00 | — | Approved | — |
Every bill is checked against the contract in force on its ship date: the discount, the minimum charge, the fuel table at that week’s diesel price, the accessorial schedule, FAK. Rate tables live under Supply Chain → Freight and can be named on a contract. You bring your own tariffs and classes; nothing licensed is shipped here.
2026-01-08 → 2027-01-08 · discount 72% · minimum $95.00 · fuel table · 2 accessorials · contest within 90 days
Your contracts and tariffs. Auditing your own bills comes with Freight Billing, pay as you go — 55¢ per electronic bill audited, 50¢ from 10,000 bills a month, 45¢ from 100,000 ($10 a month at least). Until then, try it on the sample bills.
Connecting a billing system, a carrier portal or an EDI mailbox comes with Freight Billing. Here is everything it connects to.
Connect now
A few steps
Coming soon
A PDF for the people who pay — every bill, what to pay, what to hold and why, the contest deadlines — with a spreadsheet of every line and a remittance file (what to pay each carrier) beside it, kept in Volt.
The report from your own bills. Auditing your own bills comes with Freight Billing, pay as you go — 55¢ per electronic bill audited, 50¢ from 10,000 bills a month, 45¢ from 100,000 ($10 a month at least). Until then, try it on the sample bills.
Industry estimates, not a guarantee. Your results depend on your carriers, contracts and bills.
About 4.5% of LTL freight bills had a billing error — 11,881 errors in nearly 250,000 LTL invoices audited.
Source: AFS Logistics, “Stat’s Incredible: Common LTL Invoicing Errors” · published undated · read 2026-10-29
42.8% · 14.4% · 12.3% · 10.3% of those errors were accessorial charges, fuel surcharges, freight class, and the discount, minimum or rate.
Source: AFS Logistics, “Stat’s Incredible: Common LTL Invoicing Errors” · published undated · read 2026-10-29
2% to 4% of monthly freight spend saved by catching invoice errors with a prepayment audit, as one provider described its customers’ results.
Source: Inbound Logistics (trade magazine) · published September 2015 · read 2026-10-29
About 0.5% ongoing savings on the audit itself once a shipper is an established client of an audit provider (“around one-half of 1%”).
Source: Inbound Logistics, Logistics Planner · published September 2023 · read 2026-10-29
On your $3,412 billed in the last 30 days, the published 2%–4% would be about $68–$136 — an estimate, not a promise. Your own audit held back $595.00 on 9 bills — that one is real.
ZetaVolt will publish its own clients’ results here once there are case studies.
Pay as you go: 55¢ per bill audited, 50¢ from 10,000 bills a month, 45¢ from 100,000 bills a month. You pay only for the bills audited each month, charged to your card as it adds up (at least $10.00 a month, counted toward your bills). For example: 1,000 bills $550 · 10,000 bills $5,000 · 100,000 bills $45,000.
Post-audit: ZetaVolt’s share is 45% of what carriers refund or credit to you — the rate in your signed agreement — due only when money comes back; nothing recovered, nothing owed. A share under $1,000 is charged to your card on file when you have one with ZetaVolt; otherwise, and always from $1,000, it comes as an invoice from Paddle, our reseller, due in 15 days and paid by bank transfer (wire or ACH) or card.
9 kinds of finding. Every finding is ZetaVolt’s own reading of a bill against the contract on file — software, not legal advice; you decide what to pay and send your own notices.