# Cass Alternatives for Mid-Market Manufacturers > Weighing alternatives to a freight payment auditor? See what freight-only audit covers, what it misses, and how to close the rest of the gap. Source: https://valuexpa.com/insights/cass-alternatives-mid-market-manufacturers Publisher: ValueXPA (https://valuexpa.com) Updated: 2026-09-05 --- Margin drift is the gap between what a vendor contract says and what the invoice actually charges. A manufacturer searching for alternatives to a freight payment and audit provider is usually trying to solve a bigger problem than freight: the same drift that hides in a carrier's fuel surcharge also hides in a staffing MSA's overtime rate and a maintenance contract's warranty terms. This guide compares what a freight-focused payment auditor does well against what a broader contract-to-invoice control covers, and where the two are complementary rather than competing. ## Executive Summary A freight payment and audit provider settles carrier invoices, checks them against tariffs and contracted rates, and produces consolidated reporting across a manufacturer's freight spend. That is a real, narrow function, and providers who do it well are worth keeping. The gap is scope: freight payment audit covers one category, and a mid-market manufacturer's margin drift usually spans contract labor, maintenance, MRO, and professional services alongside freight, each governed by a different contract and a different set of clauses that a freight-focused platform was never built to read. The mechanism that causes the gap is structural, not a quality failure. A freight payment audit engine is configured against carrier tariffs and accessorial tables. It has no reason to ingest a staffing MSA's rate card or a maintenance contract's warranty terms, so a rebate clause buried in a professional services SOW or an NTE cap in a labor agreement sits outside what any freight-only platform ever checks. What changes it is treating freight audit as one input to a broader control, not the whole control. A manufacturer above $100M in revenue evaluating alternatives should ask what categories of service spend the option actually reads, not just how well it reads freight. ## 1. What does a freight payment and audit provider like Cass actually do well? **Cass and similar freight payment and audit providers settle carrier invoices on a manufacturer's behalf, check freight bills against tariffs and contracted rates, and consolidate freight spend into a single reporting feed across hundreds of carriers. That consolidation and payment function is genuinely hard to replicate in-house and is the reason large shippers keep this category of vendor for decades.** Cass built its business on a specific, well-understood problem: a manufacturer with dozens or hundreds of carrier relationships has no efficient way to pay each one, reconcile each freight bill against a tariff, and get one clean report at the end of the month. Cass solves that by sitting between the shipper and the carrier, auditing freight invoices against rate tables, and issuing a single consolidated payment and report. That is a genuine capability, not a commodity one. Freight tariffs are complex, accessorial charges vary by carrier and lane, and the reconciliation work at volume is real. A manufacturer running thousands of freight invoices a month benefits from a provider that has built this specific matching logic over years. The limitation is scope, not competence. Cass's platform is configured to read freight tariffs and carrier contracts. It was not built to ingest a staffing agency's master service agreement, a maintenance vendor's warranty terms, or a professional services statement of work, and extending it to those categories is not what the product does. A manufacturer whose drift is concentrated in freight lanes gets real value here. One whose drift also lives in labor and maintenance contracts needs a second control for those categories. ## 2. Why doesn't a freight-only platform catch drift in labor, maintenance, or professional services contracts? **A freight audit platform is configured against carrier tariffs and accessorial schedules; it has no reason to hold a staffing MSA's overtime multiplier or a maintenance contract's not-to-exceed cap, so it checks nothing against those documents. The invoice for a contract labor overrun or a maintenance work order passes through a system that was never given the rule to test it against.** The mechanism is configuration, not oversight. A freight payment auditor's rule engine is built around tariff structures: base rate, fuel surcharge, accessorial fees, minimum charges. Those rules come from carrier contracts and published tariffs, which is exactly the document type the platform was designed to parse. A staffing agency's master service agreement uses a different structure entirely: bill rates by labor category, overtime multipliers, mark-up caps, sometimes a volume rebate tied to total hours booked. A maintenance contract has its own structure: labor rates, parts mark-up, warranty exclusions, response-time penalties. Neither resembles a freight tariff, and a platform tuned for one does not automatically generalize to the other. This is why a manufacturer can run a mature freight audit program for years and still find a [rate card enforcement](/guides/rate-card-enforcement-why-approved-timesheets-still-produce) problem in its staffing spend, or scope drift on a maintenance work order, that the freight platform never touched. The invoice cleared because nothing in the pipeline was configured to test it against the labor contract's terms. See margin drift vs. legitimate price increases: how to tell them apart for the related question of distinguishing a real rate change from a drift event once you are looking at the right contract. ## 3. Which service categories sit outside a freight-only audit scope? **Contract labor and staffing, maintenance and MSA-governed work, professional services statements of work, and MRO purchasing all carry their own contract structures that a freight tariff engine does not read. Each of these categories accumulates drift through its own mechanism: a rate card that goes stale, a scope that expands past the SOW, a warranty exclusion billed as new work.** - **Contract labor and staffing:** Bill rates, overtime multipliers, and volume rebates live in a staffing MSA, not a freight tariff. Rate card enforcement often fails here because approved timesheets still produce a wrong invoice against the underlying rate card. - **Maintenance and MSA work:** Warranty exclusions, response-time terms, and parts mark-up sit in the maintenance agreement. Scope drift on maintenance work orders and warranty work billed as new work are both invisible to a freight-only check. - **Professional services SOWs:** A statement of work defines a fixed scope and a change-order process. Scope creep in professional services SOWs happens when work expands without a corresponding change order, and no freight platform reads an SOW. - **MRO and indirect purchasing:** Substitution pricing, where a part number changes and the contracted price does not follow, is a purchasing-contract problem with no equivalent in a carrier tariff. ## 4. Can a manufacturer run freight audit and a broader margin drift control at the same time? **Yes. A freight payment and audit provider and a contract-to-invoice control for other categories are not competing purchases; they check different documents. A manufacturer keeps the freight provider for what it does well and adds coverage for labor, maintenance, and professional services contracts that the freight platform was never configured to read.** The two functions do not overlap in what they read, so there is no redundancy to resolve. A freight payment auditor holds carrier tariffs and freight contracts. A margin drift control built for the rest of service spend holds staffing MSAs, maintenance agreements, and SOWs. Running both means every major contract type a manufacturer signs has something checking the invoices against it. The practical sequencing question is which to add first if a manufacturer only has freight covered today. That depends on where the manufacturer's spend and contract complexity actually sit, which is a scoping question, not a product comparison. A manufacturer with a small freight book and a large staffing and maintenance spend gets more from closing the second gap first. For a manufacturer deciding whether to buy software or run a one-time audit to find out where the gap actually is before committing to either, see diagnostic or software: what to buy first. ## 5. How does a mid-market manufacturer decide between adding another point solution and running a fixed-scope diagnostic across all categories? **A point solution like a freight payment auditor is the right purchase when the manufacturer already knows freight is the category with unresolved drift. A fixed-scope diagnostic across all service categories is the right first step when the manufacturer does not yet know which contracts are leaking, because buying a tool before knowing the answer means configuring it against a guess.** The decision hinges on what the manufacturer already knows, not on which vendor is better. A company that has already isolated freight as its drift-prone category, and has freight volume that justifies the audit relationship, gets straightforward value from a dedicated freight payment auditor. That is a known problem with a known tool. A company that suspects it is losing margin somewhere in its service vendor spend, but cannot yet say whether the leak is in freight, labor, maintenance, or professional services, is in a different position. Buying a category-specific tool here means guessing the category first and configuring the tool second, which risks solving the wrong problem well. A fixed-scope diagnostic run across every category before committing to a point solution answers the category question with the actual invoices and contracts, not a guess. It also surfaces categories a manufacturer was not tracking as a source of drift at all, such as an unapplied volume rebate in a staffing agreement. See build vs. buy: can you do contract-to-invoice matching in Excel? for the related question of whether a manual process can substitute for either option in the near term. ## 6. What should a manufacturer ask any alternative before signing, freight-focused or otherwise? **Ask exactly which contract types the platform or audit reads, whether it checks rate cards and rebate clauses or only tariffs and invoices, what happens to categories it does not cover, and whether the commercial model is fixed-scope or a percentage of what it recovers. The answers determine whether the option closes the gap the manufacturer actually has or a narrower one.** Four questions separate a genuine fit from a plausible-sounding one. First, which documents does the platform actually ingest: tariffs and carrier contracts only, or does it also read MSAs, SOWs, and purchasing agreements? Second, does it check clauses like volume rebates and not-to-exceed caps, or only line-item pricing against a rate table? A rate table check catches an obvious overcharge; a rebate clause check catches money the manufacturer earned and never claimed. Third, what is the plan for categories the option does not cover? A freight-only answer here is fine as long as the manufacturer has, or plans to get, separate coverage for labor, maintenance, and professional services. An answer that implies the tool covers everything without naming which contracts it reads is worth pressing on. Fourth, is the commercial model fixed-scope or contingency? A contingency model changes who keeps the recovered dollars. See fixed-scope vs. contingency-fee recovery audits: the real cost comparison for how that difference compounds over a multi-year relationship, and [n-way invoice matching explained](/guides/n-way-invoice-matching-explained) for what the underlying matching logic needs to check regardless of which commercial model wraps around it. For the wider pattern this sits inside, start with the [margin drift](/insights/best-invoice-validation-software-smb) guide. ## 7. Frequently Asked Questions (People Also Ask) ### Is a freight payment and audit provider a full replacement for a broader margin drift audit? No. A freight payment and audit provider is built to read carrier tariffs and freight contracts, and does that well. It has no configuration for staffing MSAs, maintenance agreements, or professional services SOWs, so drift in those categories passes through unchecked regardless of how mature the freight program is. ### Should a manufacturer switch freight providers if it wants broader coverage? Not necessarily. The freight relationship and a broader contract-to-invoice control check different document types, so switching the freight provider does not close the labor, maintenance, or professional services gap. Adding coverage for those categories alongside the existing freight provider is usually the more direct path. ### What does a mid-market manufacturer mean by 'alternatives' in this context? It usually means one of two things: another freight-focused payment auditor, or a broader diagnostic that checks contract compliance across freight, labor, maintenance, and professional services in one engagement. The right answer depends on whether the manufacturer already knows freight is its only leaking category. ### Does a freight audit catch a rate card problem in a staffing contract? No. A freight audit engine checks freight invoices against carrier tariffs. A staffing contract's rate card, overtime multiplier, and rebate terms are a different document with a different structure, and nothing in a freight-only pipeline is configured to read it. ### How much money is typically at stake in categories outside freight? There is no industry-wide figure available for this, and any number offered without a stated basis should be treated skeptically. The honest answer is that it depends on the manufacturer's spend mix and contract volume in labor, maintenance, and professional services, which is exactly what a scoped review of those categories would establish. ### Can a manufacturer run a diagnostic across all categories including freight, or does freight have to stay separate? A diagnostic can include freight and 3PL alongside labor, maintenance, and professional services in the same fixed-scope engagement. Whether to also keep a dedicated freight payment auditor running in parallel is a separate decision based on freight invoice volume. ### What is the commercial difference between a fixed-scope review and a contingency-based recovery audit? In a fixed-scope engagement the manufacturer pays a set fee and keeps 100% of whatever is recovered. In a contingency model, the audit firm takes a share of what it finds, commonly a substantial percentage of recoveries. The two models produce very different economics over multiple years. ### Where should a manufacturer start if it has never run any kind of invoice audit before? Starting with a fixed-scope diagnostic across all major service categories, rather than a single point tool, answers which categories actually carry drift before any tool gets configured against a guess. That sequencing avoids paying to enforce the wrong contract's rules first. ### Does adding a broader control mean the freight provider relationship becomes redundant? No. The two check different contracts and different invoice types, so there is no overlap to eliminate. A manufacturer typically keeps the freight provider for freight and adds separate coverage for the categories it was never built to read. ### Is contract complexity quietly draining your operating margin? A small systematic drift between your negotiated contracts and your actual vendor billing compounds quietly across a year of invoices. Stop guessing at your exposure and run a targeted audit. **[Take the Free Screener → https://valuexpa.com/margin-drift-screener](https://valuexpa.com/margin-drift-screener)** ## Executive Summary A freight payment and audit provider settles carrier invoices, checks them against tariffs and contracted rates, and produces consolidated reporting across a manufacturer's freight spend. That is a real, narrow function, and providers who do it well are worth keeping. The gap is scope: freight payment audit covers one category, and a mid-market manufacturer's margin drift usually spans contract labor, maintenance, MRO, and professional services alongside freight, each governed by a different contract and a different set of clauses that a freight-focused platform was never built to read. The mechanism that causes the gap is structural, not a quality failure. A freight payment audit engine is configured against carrier tariffs and accessorial tables. It has no reason to ingest a staffing MSA's rate card or a maintenance contract's warranty terms, so a rebate clause buried in a professional services SOW or an NTE cap in a labor agreement sits outside what any freight-only platform ever checks. What changes it is treating freight audit as one input to a broader control, not the whole control. A manufacturer above $100M in revenue evaluating alternatives should ask what categories of service spend the option actually reads, not just how well it reads freight. ## 1. What does a freight payment and audit provider like Cass actually do well? Cass and similar freight payment and audit providers settle carrier invoices on a manufacturer's behalf, check freight bills against tariffs and contracted rates, and consolidate freight spend into a single reporting feed across hundreds of carriers. That consolidation and payment function is genuinely hard to replicate in-house and is the reason large shippers keep this category of vendor for decades. Cass built its business on a specific, well-understood problem: a manufacturer with dozens or hundreds of carrier relationships has no efficient way to pay each one, reconcile each freight bill against a tariff, and get one clean report at the end of the month. Cass solves that by sitting between the shipper and the carrier, auditing freight invoices against rate tables, and issuing a single consolidated payment and report. That is a genuine capability, not a commodity one. Freight tariffs are complex, accessorial charges vary by carrier and lane, and the reconciliation work at volume is real. A manufacturer running thousands of freight invoices a month benefits from a provider that has built this specific matching logic over years. The limitation is scope, not competence. Cass's platform is configured to read freight tariffs and carrier contracts. It was not built to ingest a staffing agency's master service agreement, a maintenance vendor's warranty terms, or a professional services statement of work, and extending it to those categories is not what the product does. A manufacturer whose drift is concentrated in freight lanes gets real value here. One whose drift also lives in labor and maintenance contracts needs a second control for those categories. ## 2. Why doesn't a freight-only platform catch drift in labor, maintenance, or professional services contracts? A freight audit platform is configured against carrier tariffs and accessorial schedules; it has no reason to hold a staffing MSA's overtime multiplier or a maintenance contract's not-to-exceed cap, so it checks nothing against those documents. The invoice for a contract labor overrun or a maintenance work order passes through a system that was never given the rule to test it against. The mechanism is configuration, not oversight. A freight payment auditor's rule engine is built around tariff structures: base rate, fuel surcharge, accessorial fees, minimum charges. Those rules come from carrier contracts and published tariffs, which is exactly the document type the platform was designed to parse. A staffing agency's master service agreement uses a different structure entirely: bill rates by labor category, overtime multipliers, mark-up caps, sometimes a volume rebate tied to total hours booked. A maintenance contract has its own structure: labor rates, parts mark-up, warranty exclusions, response-time penalties. Neither resembles a freight tariff, and a platform tuned for one does not automatically generalize to the other. This is why a manufacturer can run a mature freight audit program for years and still find a [rate card enforcement](/guides/rate-card-enforcement-why-approved-timesheets-still-produce) problem in its staffing spend, or scope drift on a maintenance work order, that the freight platform never touched. The invoice cleared because nothing in the pipeline was configured to test it against the labor contract's terms. See margin drift vs. legitimate price increases: how to tell them apart for the related question of distinguishing a real rate change from a drift event once you are looking at the right contract. ## 3. Which service categories sit outside a freight-only audit scope? Contract labor and staffing, maintenance and MSA-governed work, professional services statements of work, and MRO purchasing all carry their own contract structures that a freight tariff engine does not read. Each of these categories accumulates drift through its own mechanism: a rate card that goes stale, a scope that expands past the SOW, a warranty exclusion billed as new work. - Contract labor and staffing: Bill rates, overtime multipliers, and volume rebates live in a staffing MSA, not a freight tariff. Rate card enforcement often fails here because approved timesheets still produce a wrong invoice against the underlying rate card. - Maintenance and MSA work: Warranty exclusions, response-time terms, and parts mark-up sit in the maintenance agreement. Scope drift on maintenance work orders and warranty work billed as new work are both invisible to a freight-only check. - Professional services SOWs: A statement of work defines a fixed scope and a change-order process. Scope creep in professional services SOWs happens when work expands without a corresponding change order, and no freight platform reads an SOW. - MRO and indirect purchasing: Substitution pricing, where a part number changes and the contracted price does not follow, is a purchasing-contract problem with no equivalent in a carrier tariff. ## 4. Can a manufacturer run freight audit and a broader margin drift control at the same time? Yes. A freight payment and audit provider and a contract-to-invoice control for other categories are not competing purchases; they check different documents. A manufacturer keeps the freight provider for what it does well and adds coverage for labor, maintenance, and professional services contracts that the freight platform was never configured to read. The two functions do not overlap in what they read, so there is no redundancy to resolve. A freight payment auditor holds carrier tariffs and freight contracts. A margin drift control built for the rest of service spend holds staffing MSAs, maintenance agreements, and SOWs. Running both means every major contract type a manufacturer signs has something checking the invoices against it. The practical sequencing question is which to add first if a manufacturer only has freight covered today. That depends on where the manufacturer's spend and contract complexity actually sit, which is a scoping question, not a product comparison. A manufacturer with a small freight book and a large staffing and maintenance spend gets more from closing the second gap first. For a manufacturer deciding whether to buy software or run a one-time audit to find out where the gap actually is before committing to either, see diagnostic or software: what to buy first. ## 5. How does a mid-market manufacturer decide between adding another point solution and running a fixed-scope diagnostic across all categories? A point solution like a freight payment auditor is the right purchase when the manufacturer already knows freight is the category with unresolved drift. A fixed-scope diagnostic across all service categories is the right first step when the manufacturer does not yet know which contracts are leaking, because buying a tool before knowing the answer means configuring it against a guess. The decision hinges on what the manufacturer already knows, not on which vendor is better. A company that has already isolated freight as its drift-prone category, and has freight volume that justifies the audit relationship, gets straightforward value from a dedicated freight payment auditor. That is a known problem with a known tool. A company that suspects it is losing margin somewhere in its service vendor spend, but cannot yet say whether the leak is in freight, labor, maintenance, or professional services, is in a different position. Buying a category-specific tool here means guessing the category first and configuring the tool second, which risks solving the wrong problem well. A fixed-scope diagnostic run across every category before committing to a point solution answers the category question with the actual invoices and contracts, not a guess. It also surfaces categories a manufacturer was not tracking as a source of drift at all, such as an unapplied volume rebate in a staffing agreement. See build vs. buy: can you do contract-to-invoice matching in Excel? for the related question of whether a manual process can substitute for either option in the near term. ## 6. What should a manufacturer ask any alternative before signing, freight-focused or otherwise? Ask exactly which contract types the platform or audit reads, whether it checks rate cards and rebate clauses or only tariffs and invoices, what happens to categories it does not cover, and whether the commercial model is fixed-scope or a percentage of what it recovers. The answers determine whether the option closes the gap the manufacturer actually has or a narrower one. Four questions separate a genuine fit from a plausible-sounding one. First, which documents does the platform actually ingest: tariffs and carrier contracts only, or does it also read MSAs, SOWs, and purchasing agreements? Second, does it check clauses like volume rebates and not-to-exceed caps, or only line-item pricing against a rate table? A rate table check catches an obvious overcharge; a rebate clause check catches money the manufacturer earned and never claimed. Third, what is the plan for categories the option does not cover? A freight-only answer here is fine as long as the manufacturer has, or plans to get, separate coverage for labor, maintenance, and professional services. An answer that implies the tool covers everything without naming which contracts it reads is worth pressing on. Fourth, is the commercial model fixed-scope or contingency? A contingency model changes who keeps the recovered dollars. See fixed-scope vs. contingency-fee recovery audits: the real cost comparison for how that difference compounds over a multi-year relationship, and [n-way invoice matching explained](/guides/n-way-invoice-matching-explained) for what the underlying matching logic needs to check regardless of which commercial model wraps around it. For the wider pattern this sits inside, start with the [margin drift](/insights/best-invoice-validation-software-smb) guide. ## Common questions ### Is a freight payment and audit provider a full replacement for a broader margin drift audit? No. A freight payment and audit provider is built to read carrier tariffs and freight contracts, and does that well. It has no configuration for staffing MSAs, maintenance agreements, or professional services SOWs, so drift in those categories passes through unchecked regardless of how mature the freight program is. ### Should a manufacturer switch freight providers if it wants broader coverage? Not necessarily. The freight relationship and a broader contract-to-invoice control check different document types, so switching the freight provider does not close the labor, maintenance, or professional services gap. Adding coverage for those categories alongside the existing freight provider is usually the more direct path. ### What does a mid-market manufacturer mean by 'alternatives' in this context? It usually means one of two things: another freight-focused payment auditor, or a broader diagnostic that checks contract compliance across freight, labor, maintenance, and professional services in one engagement. The right answer depends on whether the manufacturer already knows freight is its only leaking category. ### Does a freight audit catch a rate card problem in a staffing contract? No. A freight audit engine checks freight invoices against carrier tariffs. A staffing contract's rate card, overtime multiplier, and rebate terms are a different document with a different structure, and nothing in a freight-only pipeline is configured to read it. ### How much money is typically at stake in categories outside freight? There is no industry-wide figure available for this, and any number offered without a stated basis should be treated skeptically. The honest answer is that it depends on the manufacturer's spend mix and contract volume in labor, maintenance, and professional services, which is exactly what a scoped review of those categories would establish. --- ValueXPA runs a fixed-scope Margin Drift Diagnostic that validates every service vendor invoice against contract terms, for $100M+ US industrial manufacturers and distributors. Two to four weeks. The client retains 100% of recoveries. https://valuexpa.com/contact-us