Contractor Payment Terms and Schedules

Payment terms and schedules govern how and when money moves between property owners, general contractors, and subcontractors throughout a construction or renovation project. This page covers the primary payment structures used in US contracting, how those structures are embedded in written agreements, the scenarios where each applies, and the decision logic for selecting one arrangement over another. Understanding these frameworks is essential for anyone evaluating a contractor contract or preparing to engage a contractor for the first time.

Definition and scope

Contractor payment terms define the timing, method, and conditions under which a contractor receives compensation for labor and materials. Payment schedules translate those terms into a project-specific timeline, linking dollar amounts or percentages of the total contract value to defined milestones, calendar dates, or deliverables.

These arrangements are governed primarily by state contract law, the terms of the written agreement between parties, and — on publicly funded work — federal and state statutes. For federal construction contracts, the Prompt Payment Act (31 U.S.C. §§ 3901–3907) establishes mandatory payment timelines: prime contractors must be paid within 14 days of a proper invoice, and subcontractors must be paid within 7 days of the prime receiving payment. Many states have enacted parallel prompt payment statutes for private-sector work.

Payment terms also intersect directly with contractor lien rights and mechanics liens, because unpaid contractors and suppliers may file liens against the property when payment schedules are not honored.

How it works

Four primary payment structures dominate US contracting practice:

1. Fixed-price (lump sum): A single agreed amount for the entire defined scope. The contractor bears cost-overrun risk. Payment typically follows a milestone or percentage-completion schedule.
2. Time and materials (T&M): The owner pays actual labor hours at agreed billing rates plus material costs, often with a markup disclosed in the contract. Risk of cost growth sits primarily with the owner. T&M contracts commonly appear in service work where scope cannot be fully defined in advance.
3. Cost-plus: The owner reimburses documented project costs and pays an additional fee — either a fixed amount or a percentage of costs — as the contractor's profit. The American Institute of Architects (AIA Document A102) provides a standard form for cost-plus-fee arrangements.
4. Unit price: Payment is calculated per measurable unit of completed work (e.g., per linear foot of pipe, per cubic yard of excavation). Common in infrastructure and civil work where quantities may vary.

Regardless of structure, payment schedules are executed through draw requests or progress billings. The contractor submits documentation — often on AIA G702/G703 forms — showing the percentage of work completed, materials stored, and the calculated amount due. The owner or an owner's representative reviews and approves the draw before funds are released.

Retainage — a percentage withheld from each progress payment, typically 5–10%, according to the Associated General Contractors of America (AGC) — is held until substantial completion or final closeout. Retainage protects the owner against incomplete or defective work; it also creates cash-flow pressure for contractors and subcontractors downstream.

The change order process in contracting directly modifies payment schedules: each approved change order adjusts the contract sum and may restructure milestone payments.

Common scenarios

Residential remodeling projects often use a three-draw schedule: a deposit at contract signing (commonly 10–30% of the contract value), a mid-project draw tied to framing or rough-in completion, and a final payment upon punch-list sign-off. State licensing boards in jurisdictions such as California (CSLB, Business and Professions Code §7159.5) cap initial deposits at $1,000 or 10% of the contract price, whichever is less, for home improvement contracts.

Commercial construction projects governed by AIA documents typically use monthly progress billings with 10% retainage reduced to 5% after 50% project completion, per standard AIA A201 General Conditions.

Government and public-sector contracts operate under the most structured regimes. Federal prime contractors invoicing under the Federal Acquisition Regulation (FAR) must comply with Part 32 financing provisions (48 C.F.R. Part 32). Public projects also trigger prevailing wage requirements for contractors that affect how labor costs are documented in pay applications.

Subcontractor payment is governed by the prime-sub agreement and, in many states, by statutory pay-when-paid or pay-if-paid clauses. The distinction matters: pay-when-paid creates a timing obligation (the sub waits until the owner pays the prime), while pay-if-paid attempts to transfer the risk of non-payment entirely to the subcontractor. Courts in a growing number of states have restricted or voided pay-if-paid clauses as against public policy.

Decision boundaries

Selecting a payment structure requires matching risk allocation to project characteristics:

Projects with a fully developed contractor scope of work and complete drawings support fixed-price contracts. Projects proceeding on preliminary designs or fast-track schedules carry scope risk that makes T&M or cost-plus more appropriate.

The depth of retainage, timing of releases, and dispute resolution procedures for disputed pay applications should all be explicitly addressed in the written contract before work begins. Ambiguous payment language is a primary driver of contractor disputes; the dispute resolution with contractors process becomes significantly more complex when milestone definitions or approval procedures were never clearly written into the agreement.