Send the documents
Current security agreement or MSA, current rate sheet or amendments, and 2–3 recent invoices. Sensitive employee details can be redacted.
For finance, procurement & facilities teams
We check your security invoices against the contract behind them.
Send the agreement and a few recent invoices. We compare rates, hours, premiums, fees, approvals, and credits — then return the exact items that deserve clarification, with the contract language and math attached.
No softwareNo integration2–3 business daysInitial review: no charge
Start with 2–3 invoicesSmall sample. Low lift.
Findings tied to contract languageNot a vague anomaly score.
Human-reviewedEvidence checked before reporting.
No vendor involvement requiredFor the initial review.
The problem
Contracts are negotiated once. Invoices arrive every month.
Rate increases, overtime, temporary posts, holiday premiums, vehicle charges, staffing changes, and missed credits can all create gaps between the agreement and the bill.
Most teams do not have time to rebuild every invoice from the contract. That is the narrow job VendorVariance is designed to handle.
How it works
Three steps. No implementation project.
We rebuild the billing
We compare invoice lines to contract terms, rates, schedules, approvals, service records, credits, and any other support you provide.
You get the evidence
Each finding shows what was billed, what the documents appear to require, the calculation, and the question to take back to the vendor.
What the deliverable looks like
Specific enough to act on.
A useful audit finding should survive a simple question: “Show me exactly why this charge deserves a second look.”
- Invoice line and amount
- Relevant contract section
- Supporting service record or approval status
- Calculation of the potential variance
- Recommended clarification or correction request
Finding 04High confidence
Holiday premium applied to a non-contract holiday
What was billed24 hrs × 1.5×
Contract supportSix named holidays only
Date invoicedApril 3
Potential variance$401.70
Recommended action: request the contractual basis for the premium or a corrected invoice.
What we check
The ordinary line items where recurring leakage can hide.
Rates & increases
Incorrect hourly rates, premature increases, classification errors, and amendments that were never approved.
Hours & posts
Unsupported hours, duplicate billing, extra guards, post changes, and schedule mismatches.
Overtime & holidays
Premiums that do not appear to meet the contract’s approval, scheduling, or holiday conditions.
Included costs
Vehicle, training, supervision, equipment, administration, or overhead billed separately even when included in the rate.
Credits & SLAs
Missed patrols, service failures, or other contractually required credits that did not appear on the invoice.
Math & duplication
Line-extension errors, duplicate entries, overlapping charges, and invoice totals that do not reconcile.
Built for a narrow job
What VendorVariance is — and what it is not.
It is
- A contract-vs-invoice review
- A documented billing exception report
- A second set of eyes for finance, procurement, and facilities
- A low-lift way to test whether deeper review is warranted
It is not
- A security consulting or safety assessment
- A legal or accounting opinion
- A generic AI chatbot or anomaly score
- An accusation that a vendor acted improperly
Start a review
Tell us a little about your security account.
No contracts or invoices are uploaded here. Start with a few basic details. Jesse will reply with the next step and, if it makes sense, instructions for sending the documents needed for the review.
Initial reviewNo charge
Typical turnaround2–3 business days after documents are received
What we need firstYour contact information and a little context about the guard account
Document handling
Only send what the review actually needs.
01
Employee-sensitive information may be redacted before documents are sent.
02
Do not send Social Security numbers, payment-card information, passwords, or unrelated personal data.
03
Documents are used for the requested review and can be deleted on request after the engagement.
Founder-led
Small scope. Clear output.
VendorVariance is run by Jesse Wilson and operates as a service of Magog CA LLC. The current focus is outsourced security-guard billing: compare the bill to the documents behind it, then return findings that can be independently checked.
The service is intentionally narrow while the process is being validated and refined.
FAQ
Straight answers before you send anything.
What does the initial review cost?
The initial review is currently offered at no charge. It is meant to answer one question: is there enough in the billing to justify a deeper engagement? If material issues are found and you want further recovery support or ongoing review, scope and fees are agreed before that work begins.
What is the turnaround time?
A typical initial review is completed within 2–3 business days after the agreement and invoices are received. Larger or more complex accounts may take longer; you will know upfront.
What documents do you need?
At minimum: the executed security agreement or MSA, current rate sheet and amendments, and 2–3 recent invoices. Schedules, attendance records, guard-tour logs, written approvals, and prior credits can strengthen the review.
Do you contact our security vendor?
Not for the initial review. The first deliverable is for your team. Any vendor communication or recovery support would only happen if separately agreed.
What if you find nothing?
Then the answer is still useful: the sample reviewed did not produce a material documented exception. There is no fee for the initial review.
Do you use AI?
Software and AI are used to accelerate document extraction and comparison. Reported items are checked against the contract, invoice, and supporting records before they are presented as findings.
Start with a small sample
One agreement. A few invoices. A clear answer.
Send the current agreement and 2–3 recent invoices. We’ll tell you whether the billing deserves a closer look.