What Is a Master Service Agreement? And Why It's the Foundation of Every AP Recovery Audit
The Document Every Recovery Audit Starts With
A Master Service Agreement (MSA) is the governing contract between a buyer and a vendor establishing the overall terms, conditions, and pricing framework for their relationship. Every specific purchase, statement of work, or service delivery operates within the parameters the MSA sets.
For AP recovery audits, the MSA and its attached rate cards, schedules, and amendments are the single most important documents. They are the authoritative reference against which every invoice line is verified.
What a Typical MSA Contains
- Pricing provisions — agreed rates for each service category: base rates, unit prices, hourly rates, lane rates, or index-linked formulas
- Surcharge schedules — the accessorial menu listing which additional charges may be applied and at what rates. Any charge not on this list has no contractual basis.
- Payment terms — when invoices are due, early payment discounts, and late payment provisions
- Term and renewal provisions — effective dates, renewal mechanisms, and rate escalation clauses
- Scope of services — what the vendor is authorised to bill for
- Amendment and change control — how changes are formally executed
The Most Common MSA-Related AP Errors
- Rate card amendments not applied in billing — a formal amendment reduces rates, but the billing template is not updated
- Charges outside the fee schedule — a vendor adds a charge not listed in the MSA's surcharge schedule
- Lapsed pricing post-renewal — a promotional rate applied during the initial term continues after renewal
- Out-of-scope billing without change order — work performed and billed outside the MSA scope without formal authorisation
Why AP Teams Often Cannot See the MSA
The people processing invoices often do not have access to the contracts those invoices should comply with. Contracts live with legal or procurement. Invoices live in the ERP. These teams rarely interact.
This gap is the root of most AP financial leakage. Closing it — even informally, by giving AP leadership read access to key MSAs — is one of the highest-return process improvements an organisation can make.
Haulr works from the MSA and rate schedules you already have — no ERP access required.