Incorrect rates
Hourly rates, annual increases, position classifications, and other charges that do not match the executed agreement or current rate sheet.
Independent contract & invoice review
Are your security invoices billing what your contract actually allows?
VendorVariance reviews outsourced security-guard invoices against the contract, rate sheets, and available service records to identify billing issues that can quietly repeat month after month.
Initial review currently offered at no charge. No software installation required.
What we look for
Simple billing errors can become expensive when they repeat.
Unsupported hours
Hours, posts, or additional guards that do not align with schedules, approvals, attendance records, or other supporting documentation.
Overtime & holiday premiums
Premium billing that may not be authorized by the contract, applicable holiday list, or approval requirements.
Extra fees
Administrative, vehicle, equipment, training, or other fees that may already be included in the contracted rate.
Missed credits
Service-level credits, missed patrol credits, or other contractual reductions that were not reflected on the invoice.
Math & duplicate charges
Line-extension errors, duplicate billing, overlapping entries, and invoice totals that do not reconcile.
How it works
A focused review, not another software implementation.
01
Send the documents
Current security agreement, rate sheets or amendments, and a few recent invoices. Sensitive employee information may be redacted.
02
We compare the billing
We reconcile invoice lines against the contract terms and available service records, then isolate items that require clarification.
03
You get the evidence
Each finding shows the billed item, applicable contract language, calculation, and amount so your team can address it with the vendor.
What you receive
A review your controller or procurement team can actually use.
We do not return a vague “AI score.” We document the specific billing item, the contract support, the calculation, and the amount that may require correction or additional documentation.
Invoice total reviewed$48,416.72
Potential exceptions$5,931.40
High-confidence findings7
Supporting contract referencesIncluded
Recommended next questionsIncluded
Illustrative example only. Results vary by contract and billing records.
Common questions
What to expect
What is the turnaround time?
A typical initial review is completed within 2–3 business days after we receive the agreement and invoices. Larger or more complex accounts may take longer; we will tell you upfront.
What documents do you need?
At minimum: the executed security agreement or MSA, the current rate sheet and amendments, and 2–3 recent invoices. Schedules, attendance records, guard-tour logs, approvals, and prior credits can strengthen the review.
Do you replace our accountant, attorney, or security provider?
No. VendorVariance performs billing and contract-document review. We do not provide legal advice, accounting opinions, or security/safety determinations.
Do you use AI?
We use software and AI to accelerate document extraction and comparison. Reported exceptions are reviewed against the underlying contract, invoice, and supporting record rather than presented as an unsupported AI conclusion.
Start with a small sample
Send the agreement and a few recent invoices.
We’ll tell you whether the billing deserves a closer look.