Three tools. No finance background needed.

Know exactly where your
business economics stand

Three free diagnostic tools that give founders and operators a rapid health check on their core numbers — in plain language, in minutes.

Free — no account required

A diagnostic, not a data dump

Your real number Each tool calculates the exact metric for your business — not industry averages or estimates.
Plain-language verdict Your result is graded and explained without financial jargon — so you know what it means immediately.
What to do next Every result tells you what the number reveals, what you still cannot see, and where to look next.

Start with any one. They all connect.

Each tool covers a different part of your business. Together they give you a complete picture of your unit economics, growth efficiency, and customer retention. No prerequisites. No financial training required.

Economics & Pricing

Contribution Margin Calculator

5 min

Most owners know their revenue. Far fewer know how much of each sale actually contributes to covering the business — after every direct cost has been paid. Contribution margin is that number: what each unit, customer, or job leaves behind once variable costs are removed.

This tool calculates your contribution margin as a percentage and as a cash figure, then grades it against realistic benchmarks for your type of business. It reveals whether your pricing is working, which products or services are genuinely profitable, and where thin margins are hiding in plain sight.

What this tool reveals

  • Whether each sale is genuinely profitable after variable costs — not just revenue
  • The contribution margin percentage your business is running at, and what that means at scale
  • How price changes and cost reductions affect your margin — before you commit to either
  • The foundation for every pricing and break-even decision in your business

Growth & Retention

CAC Payback Calculator

5 min

Every new customer costs money to acquire. The question most businesses never formally ask is: how long does it take to earn that cost back? CAC (Customer Acquisition Cost) payback — the number of months until a customer has repaid their acquisition cost through gross margin — is the single most important signal of whether growth is sustainable or quietly consuming your cash.

This tool works for both recurring (subscription) and project-based businesses, calculating payback period from your actual numbers. It shows not just the result, but what that result means for your runway, your hiring decisions, and the pace at which you can afford to grow.

What this tool reveals

  • How many months your business waits before a new customer becomes profitable
  • Whether your acquisition spend is creating durable value or stretching your cash
  • The direct link between payback period and how long your runway actually lasts
  • What changes to margin, acquisition cost, or revenue would shorten payback most

Growth & Retention

Net Revenue Retention (NRR)

5 min

Acquisition numbers tell you what came in. NRR tells you what stayed — and what it did once it arrived. Net Revenue Retention measures how revenue from your existing customers changes over a period, after accounting for cancellations, downgrades, and any upsell or expansion. A result above 100% means the customer base is compounding on its own; below 100% means it is quietly eroding, even if you are still adding new customers.

This tool works for subscription and recurring businesses as well as project-based or service businesses that deal with repeat clients. It surfaces the retention picture your headline revenue figures conceal — and identifies which component (churn, contraction, or lack of expansion) is doing the most damage.

What this tool reveals

  • Whether your existing customer base is growing, holding, or quietly shrinking
  • The combined effect of churn, downgrades, and expansion on your revenue position
  • Whether you need more new customers, or whether fixing retention would achieve more
  • The retention baseline you need before any growth investment makes sense

Three steps. No setup.

01

Enter your numbers

Each tool asks for a small set of inputs — numbers you already know or can find in your accounts in under five minutes.

02

Get your result

Your metric is calculated instantly and graded against real-world benchmarks, with a plain-language explanation of what the number means for your business.

03

See what to do next

Every result includes a set of levers you can adjust, a scenario comparison, and a clear path to the tools and actions that address what you have just learned.

The Starter Toolkit is the beginning, not the product

These three tools introduce the metrics that run through everything else in the CorpDoc framework. The tools ahead take each one further — from awareness to active management, and from management to strategic capital decisions.

13

Operator tools — Tier 2

Turn awareness into a weekly operating system

Runway, Break-Even, Burn Rate, Churn, Pricing, LTV:CAC, and more. Each one connects back to the metric you learned here and helps you act on it actively, not just measure it.

Learn about Tier 2 →

9

Strategist tools — Tier 3

Allocate capital and manage risk with confidence

Cohort Analysis, Scenario Planning, Channel Performance, Sensitivity Analysis, and more. Built for operators who are ready to compose their metrics into portfolio-level and strategic decisions.

Learn about Tier 3 →