It's one of the most dangerous traps in construction: you have $50,000 in your business checking account, so you feel rich. You buy a new trailer, upgrade your tools, and maybe take a weekend off. But two weeks later, you realize that $40,000 of that money was already spoken for—materials for the next job, subcontractor draws, and upcoming taxes. Suddenly, you're in a cash crunch.
Profit vs. Cash Flow
Profit is what's left over after you've paid all your expenses on a job. Cash flow is the timing of when that money enters and leaves your account. A job can be highly profitable on paper, but if you have to pay for all the materials upfront and the client doesn't pay until 30 days after completion, your cash flow is negative. Negative cash flow is what kills most construction businesses.
The 'Float' Trap
Many contractors use the deposit from Job B to pay for the materials on Job A. This is called 'robbing Peter to pay Paul,' and it works until Job C gets delayed. Once the cycle breaks, you're stuck with bills you can't pay and a reputation you can't fix. The solution is rigorous project accounting: every dollar should be tracked to the specific job it belongs to.
Using Technology to Track the Flow
Modern estimating and invoicing tools allow you to see your project's financial health in real-time. By integrating your bids with your actual expenses, you can see whether you're staying on budget and when you need to send that next draw request to keep your cash flow positive.
Key Takeaways
- Track by Job: Never mix funds between projects; each job must be self-sustaining.
- Draw Schedule Rigor: Request payments at specific project milestones to maintain cash flow.
- Expense Transparency: Know exactly how much of your bank balance is 'profit' and how much is 'pre-paid expense.'
- Tax Reservations: Set aside 20-30% of every payment for taxes before you do anything else.