Calculate Total Addressable Market, Serviceable Addressable Market, and Serviceable Obtainable Market with top-down or bottom-up logic, then turn the result into a sharper strategy slide, investor narrative, or diligence-ready market sizing exhibit.
Frame market entry, growth adjacency, and board recommendation slides with explicit sizing logic.
Replace hand-wavy TAM claims with a credible beachhead market and a realistic capture plan.
Size category attractiveness, segment focus, and post-close growth headroom before the model and memo are finalized.
Active example: AI copilot sold to U.S. multi-site healthcare providers for revenue cycle and FP&A workflows.
This is a conservative capture case: only 0.5% of TAM becomes the near-term plan. That usually reads as more credible in board and investor discussions.
Base case market sizing points to a $10.4M SOM over 3 years, supported by a $261.1M SAM inside a $2.2B TAM. SAM reflects 11.8% reachable market after geography, segment, and product-fit filters, while SOM assumes 4.0% capture of that beachhead.
Use top-down when you already trust an external market figure. Use bottom-up when you want a more defensible customer-count model.
Keep the math explicit so investors, CFOs, and diligence teams can follow the logic quickly.
Mode = Bottom-up customer model
TAM = $2,220,000,000
18,500 customers x $120,000 ACV
Geography = 100.0%
Segment = 28.0%
Product fit = 42.0%
Effective SAM share = 11.8%
Obtainable share = 4.0%
SOM as % of TAM = 0.5%
Horizon = 3 years
SAM customers = 2,176
SOM customers = 87
Use these as a cross-check if your deck needs account-level math.
Lead with the size of the revenue pool, but keep the claim specific to the spend your product or strategy can actually monetize.
Top-down market bridge or sourced market bar
Show how geography, segment, and product-fit filters narrow the opportunity into the market the team can actually serve now.
Funnel or concentric TAM-SAM-SOM graphic
Translate the near-term capture case into a revenue target that feels operationally defensible instead of promotional.
Capture-case table with base, upside, downside
This example uses the default healthcare finance preset so the full sizing chain is visible on the page.
Bottom-up TAM = 18,500 potential customers x $120,000 annual revenue per customer = $2,220,000,000.
SAM filter stack = 100.0% geography x 28.0% segment x 42.0% product fit = 11.8% of TAM.
SAM = $2,220,000,000 x 11.8% = $261,072,000.
SOM = $261,072,000 x 4.0% = $10,442,880.
Use TAM for scale, SAM for focus, and SOM for credibility. Investors will usually care most about the SOM logic and the evidence chain behind it.
Tie the beachhead market to resourcing, channel choice, and a measured capture plan instead of a broad category aspiration.
Use the filter stack to show why a segment or geography deserves prioritization and where the practical limits sit.
Anchor the investment case in category size, reachable subsegments, and the portion of the opportunity the platform can realistically capture post-close.
Market Sizing Presentation Guide
See how TAM, SAM, and SOM turn into an executive-ready narrative.
Market Sizing and Analysis Template
Start from a slide structure built for opportunity sizing and sensitivity logic.
Consulting Case Deck Builder
Use the sizing output inside a broader recommendation deck.
Pitch Deck Grader
Pressure-test whether your market slide reads as credible to investors.
Using a broad industry number as TAM without narrowing to what buyers would actually spend on your category.
Calling the same number TAM and SAM even though geography, segment, or product scope clearly reduce the reachable market.
Setting SOM as a vanity percentage of TAM instead of a near-term capture case grounded in execution capacity.
Showing no source plan for customer counts, pricing, or market filters when the audience will ask for proof.
Consultants, founders, private equity teams, product strategy leads, and finance teams use TAM SAM SOM logic when they need to quantify market opportunity for a board deck, investment memo, launch plan, or growth case.
Use both when possible. Top-down is useful for framing category scale, while bottom-up is usually more credible because it ties the opportunity to real customer counts, pricing, and go-to-market constraints.
SAM should reflect the portion of TAM you can actually serve after applying filters such as geography, target segment, regulatory scope, channel access, delivery capacity, and product fit.
Build SOM from execution reality. Tie it to sales capacity, rollout timing, win rates, implementation resources, or portfolio bandwidth instead of claiming a round percentage of a huge market.
Yes. The calculator is designed to produce a market sizing takeaway, supporting math, and slide-ready narrative that can move directly into an investor, strategy, or board presentation.
Use the calculator first, then generate a market sizing presentation with a clear answer-first summary, TAM-SAM-SOM bridge, sensitivity logic, and the assumptions a board, IC, or investor will challenge first.