Free Tool by Digital Uncovered
The board slide that always
gets challenged.
Every board deck has a TAM slide. Almost none of them are built with the same rigour as the financial projections. This calculator forces you to derive your market size from real assumptions — and gives you the answers to the three questions boards always ask.
1
Your market2
SAM filters3
Your SOMDefine your Total Addressable Market (TAM).
TAM is the full universe of companies that could theoretically buy your product — if you had unlimited sales capacity, distribution, and zero competition. Start broad, then narrow in steps 2 and 3.
Bottom-up is more defensible than top-down. "The Indian SaaS market is $10B and we want 1%" is not a TAM methodology. Count the companies, multiply by what they'd pay you. That's what this tool builds.
Industry & geography
B2B SaaSSoftware products
IT ServicesTech consulting
Fintech / BFSIFinance & banking
HRtechHR & workforce
Logistics / SCMSupply chain
HealthtechHealthcare B2B
Edtech B2BCorporate training
ManufacturingIndustrial B2B
Other B2BProfessional services
India (all)Pan-India market
Tier 1 metrosMumbai, Delhi, Bengaluru, Hyderabad, Chennai, Pune
Tier 1 + Tier 2Top 20 cities
Global (India HQ)India-headquartered, sell globally
TAM calculation method — bottom-up
Estimated number of companies in India that could theoretically use your product. Use MCA/GSTIN registry data or industry estimates.
companies
Required.
What would a typical company in your universe pay you per year? Use your current ACV or a conservative pricing estimate.
₹ / yr
Required.
Which company sizes does your product serve? This will be used to cross-check your universe estimate.
Micro (1–10)~4.8 Cr businesses in India
Small (11–99)~33 lakh businesses
Mid-market (100–999)~1.2 lakh businesses
Enterprise (1,000+)~9,000 businesses
SMB + Mid (11–999)~34 lakh businesses
Mid + Enterprise (100+)~1.3 lakh businesses
Narrow to your Serviceable Addressable Market (SAM).
SAM is the portion of TAM you can actually reach — constrained by geography, language, product readiness, regulatory fit, and segment focus. Most boards challenge TAM. Nobody challenges a well-reasoned SAM.
Geographic penetration
If you sell only in Tier 1 cities, what % of your total company universe is actually reachable? Account for language, sales presence, and distribution.
%
Required (1–100).
Of all companies in your size range, what % are in the specific industries your product is built for?
%
Required (1–100).
Product & readiness filters
What % of eligible companies actually have the budget and digital infrastructure to purchase and use your product today? Exclude those who need years of maturation first.
%
Required (1–100).
Not every company in your target size and industry has your specific pain point. What % actually experience the problem you solve acutely enough to pay for a solution?
%
Required (1–100).
SAM challenge: When these four percentages are multiplied together, the number usually surprises people. A 60% × 35% × 40% × 65% filter chain leaves you with 5.5% of your TAM. That's not pessimism — it's accuracy. A 5.5% SAM on a large TAM is still a large market.
Estimate your realistic Serviceable Obtainable Market (SOM).
SOM is what you can actually win — constrained by your sales capacity, competitive position, and time horizon. This is the number your investors and board will hold you to.
Competitive landscape
Companies selling a similar solution to a similar buyer in your market. Count only real competitors, not adjacent solutions.
competitors
If you have 8 competitors and no structural advantage, equal share is ~11%. If you have a clear differentiator, 15–25% is defensible. Over 40% needs a very strong argument.
%
Sales capacity
Number of quota-carrying reps today
reps
Realistic closed deals per AE annually
deals
First contact to signed contract
mo
Growth assumptions
How fast is your total market growing? Indian B2B SaaS: 25–35%. Manufacturing tech: 15–20%. BFSI: 18–25%.
% / yr
Required.
How fast do you plan to grow relative to the market? Growing faster than market = share gain. Growing slower = share loss.
% / yr
Required.
Your market sizing — India B2B
TAM — Total addressable
SAM — Serviceable addressable
SOM — Obtainable (year 3)
How TAM narrows to SAM to SOM
All assumptions — the board will ask for these
Every number in the TAM/SAM/SOM is derived from one of these assumptions. If any assumption is challenged, you know exactly how it affects the output.
| Assumption | Your value | What it means |
|---|
SOM trajectory — years 1 to 5
Your market position
Sales capacity check
The three questions boards always ask — answered
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