Core Inflation

A pricing model where the contractor bills for actual time spent and materials used, plus markup. Common for work where scope is uncertain.

A fee billed to clients to reserve your crew, equipment, or services during a set period — whether fully utilised or not. It protects subcontractors from revenue loss during standby or low-demand phases. Common in long-term service agreements for drilling, frac, or maintenance contracts.

Materials, labour, and equipment costs tied to commercial and industrial construction projects. Subcontractors track these input costs to price bids accurately and protect margins. Rising input costs can erode fixed-price contract profitability quickly.

A variable fee added to invoices to recover fuel cost fluctuations on equipment-heavy jobs. Subcontractors often tie it to a published index, such as the weekly rack price. Review prime contracts carefully — some owners cap or exclude surcharges entirely.

When an operator returns a field ticket for correction before approval. Common causes include missing information, rate discrepancies, or insufficient documentation. Rejections delay payment and require rework.

A return visit to a job site to fix work that failed inspection or did not meet spec. Callbacks are unpaid rework that directly cuts into a subcontractor's margin. Minimising them is critical to staying profitable on fixed-price contracts.

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