9 Spreadsheets Every $10M+ Business Should Have

This isn't about being old-fashioned. Spreadsheets remain the tool of choice for financial analysis because they're flexible, transparent, and allow for scenario modeling that purpose-built software can't match. The CFOs of billion-dollar companies still build critical models in Excel. At $10M+, you should too.

Here are the nine spreadsheets that form the foundation of financial management for a growing business.

1. 13-Week Cash Flow Forecast

Purpose: Weekly visibility into cash position for the next quarter. This is the most important spreadsheet for any business.

Key Components

• Opening cash balance each week
• Expected cash receipts (from AR aging, expected payments)
• Expected cash disbursements (from AP aging, payroll, fixed costs)
• Net cash flow and closing balance
• Minimum cash threshold line

Why It Matters

Monthly P&L shows you profitability. The 13-week cash flow shows you survival. It identifies cash crunches weeks in advance, giving you time to accelerate collections, delay payments, or arrange financing.

2. Rolling 12-Month Forecast

Purpose: A continuously updated view of the next twelve months, replacing the static annual budget with a living forecast.

Key Components

• Revenue by product/service line or customer segment
• Cost of goods sold with variable cost drivers
• Operating expenses by department or category
• EBITDA and net income projections
• Month-by-month detail with actual vs. forecast comparison

Why It Matters

The annual budget is obsolete by February. A rolling forecast stays current, always showing the next twelve months regardless of calendar year. It forces regular assumption reviews and keeps planning connected to current reality.

3. Customer Profitability Analysis

Purpose: Understanding which customers actually make money versus which ones just look like revenue.

Key Components

• Revenue by customer (or customer tier)
• Direct costs attributable to each customer
• Allocated costs based on reasonable drivers (time, transactions, etc.)
• Gross margin and contribution margin by customer
• Customer concentration analysis

Why It Matters

Revenue isn't profit. Some customers demand constant attention, pay late, negotiate every invoice, and require custom work—all of which costs money. This analysis often reveals that 20% of customers generate 150% of profits, while the bottom 20% destroy value.

4. Scenario Planning Model

Purpose: Stress-testing the business against multiple possible futures.

Key Components

• Base case: current trajectory with realistic assumptions
• Upside case: accelerated growth, improved margins
• Downside case: revenue decline, margin pressure
• Stress case: significant disruption (major customer loss, market downturn)
• Key assumption drivers that toggle between scenarios

Why It Matters

"What if" questions need quantified answers. What if our largest customer leaves? What if growth accelerates beyond capacity? What if a recession hits? The scenario model provides answers in advance so you can make contingency plans.

5. Working Capital Model

Purpose: Understanding the cash tied up in operations and how it changes with growth.

Key Components

• Days sales outstanding (DSO) tracking and trends
• Days payable outstanding (DPO) tracking
• Inventory days (if applicable)
• Cash conversion cycle calculation
• Working capital as percentage of revenue
• Incremental working capital needs for growth

Why It Matters

Growth consumes cash. This model quantifies exactly how much. If you need $15 of working capital for every $100 of revenue, a $1M growth target requires $150K of additional cash just to fund the growth—before any profit is generated.

6. Headcount Planning Model

Purpose: People are your biggest expense. This model plans and tracks it.

Key Components

• Current headcount by department and role
• Fully-loaded cost (salary, benefits, taxes, overhead)
• Planned hires with start dates and ramp assumptions
• Attrition assumptions and replacement timing
• Revenue per employee metrics
• Labor cost as percentage of revenue

Why It Matters

Hiring decisions are binary (hire or don't) with fixed ongoing costs. This model connects hiring to capacity needs, revenue projections, and budget constraints. It also tracks the true cost of each role—which is typically 1.25-1.4x base salary when you include everything.

7. Capital Expenditure Model

Purpose: Planning and tracking investments in long-term assets.

Key Components

• Existing fixed assets with remaining life and depreciation
• Maintenance CapEx requirements (replacing aging assets)
• Growth CapEx plans (new capacity, technology, facilities)
• Project ROI analysis for significant investments
• Cash flow impact by quarter/year

Why It Matters

CapEx doesn't hit the P&L immediately—it's capitalized and depreciated. But it requires cash upfront. This model plans for large cash outlays and ensures you're not deferring maintenance that will create problems later.

8. Debt Covenant Tracker

Purpose: Monitoring compliance with lender requirements before violations occur.

Key Components

• All covenant requirements (leverage ratio, fixed charge coverage, etc.)
• Current period calculations
• Forward-looking projections based on forecast
• Covenant headroom (cushion before breach)
• Early warning thresholds (80% of limit triggers review)

Why It Matters

Covenant violations give banks the right to call loans or restrict credit. By the time you breach a covenant, it's too late to fix it. This model projects compliance forward so you can take action—or negotiate amendments—before violations occur.

9. Valuation Model

Purpose: Understanding what your business is worth and what drives value.

Key Components

• Adjusted EBITDA calculation with documented add-backs
• Comparable company multiples from recent transactions
• Enterprise value calculation range
• Equity value after debt and adjustments
• Value driver sensitivity analysis

Why It Matters

Even if you're not selling, understanding value helps prioritize initiatives. Which improvements add value? Which destroy it? The valuation model connects operational decisions to owner wealth, making abstract strategy concrete.

Making Models Work

Update Cadence

Best Practices

• Document assumptions: Every model should have a clear assumptions tab
• Version control: Date your files, keep previous versions
• Input validation: Build error checks to catch data problems
• Clear outputs: Executive summary that answers "so what?"
• Connected data: Link to source data rather than manual entry where possible