What are Generally Accepted Accounting Principles (GAAP)?

A payment application (or pay app) is a comprehensive collection of documents that construction contractors submit to request progress payments throughout a project. Rather than just a simple invoice, payment applications include multiple forms and supporting documentation that prove what work was completed, which materials were used, and what payment is due. The typical pay app package includes: 

• an application for payment form, 
• a continuation sheet with schedule of values details, 
• lien waivers, and 
• often backup documents like material receipts and payroll reports. 

Payment applications are submitted on predetermined schedules—whether monthly, at project milestones, or when specific percentages of work are completed—and serve as the primary billing mechanism for longer, higher-budget construction projects.

For subcontractors, mastering payment applications is critical because they directly impact cash flow and project profitability. The process involves coordinating between accounting teams, project managers, and vendors to gather all required documentation before submission deadlines. Common mistakes—like using incorrect forms, missing documentation, math errors, or late submissions—can delay payments and disrupt cash flow. Many GCs have their own custom forms and specific requirements, making attention to contract details essential. 

For detailed guidance on navigating the entire pay app process, check out our payment application guide. Or better yet, check out Siteline—built specifically for commercial subcontractors to streamline the entire payment application process. Siteline handles any custom pay app form, assembles all required lien waivers for you and your lower tiers, and tracks change orders to ensure accurate, on-time submissions. Subcontractors using Siteline get paid up to three weeks faster than with traditional manual processes. Request a demo here and see how Siteline puts your pay apps on autopilot so you can focus on the work that matters most.

Self-perform, in the context of the construction industry, refers to the ability of a construction company to use its own workforce to accomplish certain specific tasks or projects, rather than outsourcing or subcontracting to external teams or entities. By opting to self-perform, the company can have direct control over the quality of work, project timeline, cost management, and overall productivity. For example, a construction firm may choose to self-perform tasks like concrete placement, plumbing, electrical work, and roofing operations, maintaining stringent quality standards all along. However, it is essential for companies undertaking self-perform tasks to have skilled and trained personnel who can efficiently execute the work. To sum up, self-perform allows construction firms to maintain better control over the project while potentially saving costs and enhancing efficiency.

A zero-balance account (ZBA) is a financial tool commonly used in construction accounting where the account balance is maintained at or near zero. Funds are transferred to the ZBA as needed to cover expenses or payments, typically from a parent account. Once a transaction has been made from the ZBA, that amount spent is automatically transferred from the parent account, so the ZBA balance returns to zero.

In the complex world of construction projects—where multiple subcontractors are involved—ZBAs allow the general contractor (GC) to closely monitor and manage cash flow for each subcontractor on the project. This system prevents excess funds from sitting idle in numerous accounts—and potentially forgotten as the project progresses. It also provides a clear audit trail for each subcontractor’s expenses, making it easier to track costs against budgets to identify any discrepancies or unusual spending patterns. Additionally, ZBAs can help reduce the risk of fraud or unauthorized spending, as funds are only transferred on an as-needed basis.

ZBAs provide a level of control and visibility that is crucial for maintaining liquidity and profitability—much like Siteline. Siteline allows subcontractors to easily track their inflows and outflows, providing a clear financial picture of each project and the company overall. Interested in learning more? Schedule your personalized Siteline demo here.