What is Cash Accounting?

Lump Sum Billing in the construction industry refers to a fixed contract price for the completion of all work required for a specific project. This means that the contractor agrees to complete the whole project at a specific set cost irrespective of the amount of resources and time spent on the project. The contractor bears all the risk and is responsible for any cost overruns. Lump sum billing is commonly used in construction due to its simplicity, as the entire project is billed one time for one set amount.

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Overbilling (or billing in excess of costs) occurs when you’ve invoiced your client for more work than you’ve actually completed or incurred costs for. In other words, it represents getting paid ahead of your work schedule.

Here’s how it works: If you’re a concrete subcontractor on a $100,000 job and you bill 50% upfront ($50,000) but have only completed $30,000 worth of work, that $20,000 difference is your billings in excess of costs. You owe your client that work, and until you complete it, that $20,000 remains as a liability on your balance sheet.

For subcontractors, understanding billing in excess of costs is essential because it can be a strategic cash flow tool when used carefully. For example, when bidding on a job, you can be smart about how you structure your schedule of values (SOV)—breaking work down into more detailed line items that allow earlier billing. However, this strategy requires regular monitoring to ensure:

• Your billing somewhat aligns with your actual percentage complete, and 
• The remaining contract value will still cover your remaining costs.

The biggest risk of overbilling is thinking your margins look better than they are, simply because you’re collecting cash faster. Surety companies and lenders also scrutinize overbillings closely, as excessive amounts can signal poor project management or potential cash flow problems down the road.

With Siteline, you can easily track whether you’re billing in excess of your costs by pulling your month-to-month incurred costs and comparing them against your billing progress. This real-time visibility helps ensure you’re billing appropriately while maintaining realistic profitability expectations. If you’re interested in seeing for yourself, schedule a personalized demo of Siteline here.

The Matching Principle is a crucial accounting concept prevalent in the construction industry. This principle dictates that all expenses must be matched with the revenues they generated in a particular financial period, ensuring that all costs and income for each project are accurately reported on the income statement. For example, if a construction company incurs costs for labor, materials, and equipment in July and August for a project that's completed in September, those costs would be recorded in September when the income is recognized. This principle is essential as it provides a more accurate picture of a company's profitability and financial health for a specific period. It allows construction companies to better manage their cash flows, project budgeting, and financial planning.