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💰 Cash Flow Projection Calculator

Project cash flow for construction projects and your entire company. Essential for financial planning and avoiding cash crunches.

Why Cash Flow Projections Matter​

Construction is cash-intensive. You pay for materials and labor before you get paid. Cash flow projections help you:

  • Avoid cash crunches - Know when you'll need money
  • Plan financing - Line up credit before you need it
  • Make decisions - Can you take on that new project?
  • Manage payments - Prioritize who gets paid when
Cash Flow Kills More Contractors Than Profitability

Many profitable contractors fail because they run out of cash. Track it religiously.

How Construction Cash Flow Works​

The Cash Flow Cycle​

Pay for Materials/Labor → Wait for Payment → Receive Payment → Pay Next Cycle
     (Week 1-4)              (Week 5-8)         (Week 9-12)

Typical Timeline:

  • Week 1-4: Pay for work performed
  • Week 5-8: Wait for owner payment
  • Week 9-12: Receive payment (if approved on time)

The Problem​

You're always paying for work before you get paid. This creates negative cash flow that must be funded.

Project Cash Flow Projection​

Step 1: Project Schedule​

Break your project into phases and estimate:

  • Start date for each phase
  • Duration of each phase
  • Completion date

Step 2: Estimate Costs by Period​

For each period (week/month), estimate:

  • Direct Costs: Labor, materials, equipment, subcontractors
  • Indirect Costs: General conditions, overhead allocation
  • Total Costs: Sum of direct and indirect

Step 3: Estimate Revenue by Period​

For each period, estimate:

  • Work Completed: % complete × contract value
  • Retention: Typically 5-10% withheld
  • Net Revenue: Work completed - retention

Step 4: Calculate Cash Flow​

Cash Flow = Revenue Received - Costs Paid

Timing Matters:

  • Costs paid: When you pay (typically weekly/bi-weekly)
  • Revenue received: When owner pays (typically 30-60 days after invoice)

Step 5: Calculate Cumulative Cash Flow​

Cumulative Cash Flow = Previous Cumulative + Current Period Cash Flow

Monthly Cash Flow Projection​

MonthCosts PaidRevenue ReceivedNet Cash FlowCumulative
Month 1$_______$_______$_______$_______
Month 2$_______$_______$_______$_______
Month 3$_______$_______$_______$_______
Month 4$_______$_______$_______$_______
Month 5$_______$_______$_______$_______
Month 6$_______$_______$_______$_______

Key Metrics​

  • Peak Negative Cash Flow: $_______ (lowest point)
  • Breakeven Point: Month _______
  • Total Cash Needed: $_______
  • Payback Period: _______ months

Company-Wide Cash Flow​

Step 1: List All Projects​

For each active project:

  • Project name
  • Contract value
  • % complete
  • Costs to date
  • Billed to date
  • Received to date

Step 2: Estimate Monthly Costs​

  • Project Costs: Sum of all project costs
  • Overhead Costs: Office, admin, non-project costs
  • Debt Service: Loan payments
  • Other: Taxes, distributions, etc.

Step 3: Estimate Monthly Revenue​

  • Project Payments: Expected payments from projects
  • Other Income: Equipment rental, etc.

Step 4: Calculate Net Cash Flow​

Net Cash Flow = Total Revenue - Total Costs

Common Cash Flow Scenarios​

Scenario 1: Growing Company​

  • Taking on more work
  • Cash needs increase faster than revenue
  • Solution: Line of credit, retain earnings, slow growth

Scenario 2: Slow Payment​

  • Owner pays late
  • Cash gap widens
  • Solution: Invoice promptly, follow up, consider financing

Scenario 3: Front-Loaded Project​

  • Early payments cover costs
  • Positive cash flow early
  • Risk: Must finish project to collect remaining

Scenario 4: Back-Loaded Project​

  • Most payment at end
  • Negative cash flow throughout
  • Risk: Need significant working capital

Improving Cash Flow​

  1. Invoice Promptly - Don't delay billing
  2. Follow Up - Stay on top of receivables
  3. Negotiate Terms - Better payment terms
  4. Front-Load SOV - More payment early (ethically)
  5. Reduce Retention - Negotiate lower retention
  6. Line of Credit - Have credit available
  7. Retain Earnings - Build working capital
  8. Manage Payables - Pay on time but not early

Red Flags​

Watch for these warning signs:

  • Cumulative cash flow stays negative
  • Peak negative exceeds available credit
  • Multiple projects all negative at once
  • Receivables aging beyond 60 days
  • Can't pay bills on time

Interactive Calculator​

Percentage of revenue spent on direct costs (default 85%)
Percentage withheld from each payment (default 10%)
Average days from invoice to payment (default 30)

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