# TAM-SAM-SOM Calculator MCP > TAM-SAM-SOM Calculator determines your market opportunity size by calculating three key figures: Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM). Use this MCP to model potential revenue using established top-down and bottom-up methods, giving you a clear, tiered view of customer reach and realistic growth targets. ## Overview - **Category:** finance - **Price:** Free - **Tags:** market-sizing, tam-sam-som, business-planning, revenue-projection, strategy ## Description Need to know how big your market really is? This connector gives you an engine for precise market sizing. You can start by figuring out the total money available in your industry using broad metrics. Next, you narrow that scope down—maybe focusing just on a specific region or customer segment. That process yields your Serviceable Addressable Market (SAM). Finally, the system projects what's actually realistic for you to capture over time, giving you a concrete SOM figure. This process moves beyond guesswork and gives you solid numbers to back up your pitch deck. If you need reliable market sizing data fed into your existing tech stack, connecting through Vinkius’ catalog lets your AI client access this engine instantly. ## Tools ### apply_sam_refinement Narrows the initial total market size down to a specific, reachable service area. ### calculate_tam_base Establishes the baseline for the absolute largest possible market size. ### project_som_capture Calculates your expected, realistic market share based on growth projections. ## Prompt Examples **Prompt:** ``` Calculate my TAM if I have 50,000 potential customers and each spends $100 per year. ``` **Response:** ``` The Total Addressable Market (TAM) is $5,000,000 with 50,000 customers. ``` **Prompt:** ``` My TAM is $10M. If my geographic reach is 30% and my segment target is 50%, what is my SAM? ``` **Response:** ``` Your Serviceable Addressable Market (SAM) is $1,500,000. ``` **Prompt:** ``` If my SAM is $2M and I expect to capture 5% of the market by year 3, what is my SOM? ``` **Response:** ``` Your Serviceable Obtainable Market (SOM) is $100,000. ``` ## Capabilities ### Determine total potential market value Calculates the absolute maximum revenue available in a given industry or geography. ### Filter market scope by region or segment Reduces the initial overall market size to reflect only the areas you can actually serve. ### Estimate realistic near-term revenue goals Projects your achievable market share based on growth assumptions and competitive analysis. ## Use Cases ### Pitching a new enterprise solution A PM needs to prove that their software is needed. They ask their agent to first calculate the total potential market size, then filter it by corporate clients in North America, and finally project what's reachable within five years. ### Evaluating a geographic expansion A VP of Strategy needs to know if moving into Southeast Asia is worth it. They use the tool to calculate TAM for the entire Asian market, then refine that figure using local data parameters before deciding on resource allocation. ### Annual business planning review A Business Analyst needs to update their department's revenue targets. They feed in last year’s SAM and ask the tool to project a realistic market capture rate for the coming fiscal year, grounding their budget proposal. ### Determining investment readiness A founder needs funding. They use the calculator to establish a massive TAM number, then narrow it down using `apply_sam_refinement` to show investors exactly where the company's focus lies and how big that niche is. ## Benefits - Move past gut feelings. The `calculate_tam_base` tool gives you a definitive starting point, proving the sheer scale of the industry before you even start filtering. - Pinpoint your real target. Instead of using massive, vague numbers, the process uses `apply_sam_refinement` to focus only on the segments and regions you can actually serve. - Set credible goals. The system doesn't just give you a big number; it runs through `project_som_capture`, giving you a grounded, believable revenue target for Year 3. - Build better pitches. You get three distinct metrics—TAM, SAM, and SOM—allowing your AI client to generate complete, tiered financial narratives automatically. - Save time on spreadsheets. Instead of spending hours adjusting formulas in Excel, you run the entire calculation sequence through one simple prompt. ## How It Works The bottom line is: it takes raw industry data and turns it into three distinct, actionable figures for business planning. 1. First, input the broad metrics to establish the total potential size of the entire market. 2. Next, apply filters—like restricting geography or segment type—to narrow that figure down to your actual reachable market (SAM). 3. Finally, provide growth expectations and a timeline to determine the specific portion you can realistically capture, resulting in your SOM. ## Frequently Asked Questions **How does the TAM-SAM-SOM Calculator use `calculate_tam_base`?** The tool starts by calculating the total market size based on your initial inputs, establishing the absolute maximum revenue potential. This provides the necessary starting baseline for all subsequent calculations. **What is the difference between TAM and SAM when using `apply_sam_refinement`?** TAM is everything possible in the world; SAM only includes the portion of that market that your business can actually reach, based on filters like geography or segment. **Is SOM just a guess? How accurate is `project_som_capture`?** No. The tool uses established growth projection metrics and current assumptions to generate an achievable market share figure (SOM), making it more grounded than simple guesswork. **Does the TAM-SAM-SOM Calculator handle different methodologies?** Yes, it supports both top-down methods (starting big and filtering down) and bottom-up modeling to give you a comprehensive view of your market potential. **What data types can I use when calling `calculate_tam_base`?** It accepts numerical inputs for potential customers and average spend. The tool requires clear, quantifiable figures; it doesn't process qualitative descriptions or raw text files. **If my input data is incomplete, how does the system handle errors when I use `apply_sam_refinement`?** The MCP provides specific error codes and field validation messages. It won't run if required parameters like initial TAM values or refinement percentages are missing. **Are there any rate limits or performance concerns when running multiple projections with `project_som_capture`?** The MCP is designed for professional use and handles high volumes of requests efficiently. For extremely heavy, continuous usage, check the Vinkius marketplace guidelines for best practices. **What kind of client applications are compatible with this MCP when running `project_som_capture`?** This MCP works with any AI client that supports the Model Context Protocol. You just need to connect your preferred agent through a standard Vinkius subscription.