How do you estimate TAM ??

What are some methods to estimate Total Addressable Market, especially for industries with non-straight-forward business models (NOT volume vs. price businesses, but rather balance sheet businesses, real estate, etc.)?

(Assuming you don’t have access to industry/research reports)

6 Comments
 
Most Helpful

For markets that are much less well-defined or speculative, I often size based on the potential cost avoidance that a solution/product can deliver to a customer, then assuming a % willingness-to-pay.

E.g., sizing the market for a hypothetical B2B SaaS solution marketed to automate a niche compliance process in a specific industry:

  • Assume this customer process is currently carried out in-house by compliance FTEs
  • Conduct expert calls and estimate that 10,000 compliance FTEs in the industry carry out this process today, dedicating 20% of their annual time at $150k/yr fully-loaded compensation
  • Product team believes SaaS solution can only automate 50% of this compliance process today (human input needed for the less menial process)

So total opportunity (assuming 100% willingness to adopt) = 10,000 FTEs * 20% of hours * $150k/yr * 50% automation = $150 Mn

Then, let's assume that based on precedent products in this industry, customers are willing to pay ~33% of their cost savings as subscription fees for a solution.

Then TAM (defined as the total revenue pool) = $150 Mn * ~33% = ~$50 Mn/yr.

Now, there may be further upside to this market size (e.g., this product enables faster time-to-market for customers and therefore a revenue benefit), or the TAM could grow as % automation grows, or total industry spending on this process grows etc. But using this base, we can now make assumptions on market penetration, adoption etc. to start translating an abstract market sizing into revenue projections.

 

This is really detailed. Do you think this is the response expected for a 1 minute answer? Typically I've been asked stuff like TAM for steel fencing or wedding bouquets or law school tutoring services...which are pretty much estimate volume by geography * price exercises. Now that you've given a detailed answer, would you also think about the above examples in more detailed ways or do you think typical volume * price is sufficient?

 

The volume by geo * price approach works when you're sizing something that's more well-defined. The real rigor in your approach should come through in how you back up the assumptions on each lever though (e.g., what are the levers that get you to an estimated # of wedding bouquets, on what basis do you assert law students are willing to pay $x for in-person tutoring vs. electronic options).

 

Facere et unde dolor facere. Eum cum incidunt aut ducimus. Et sed laudantium odit et autem vero dolorum.

Career Advancement Opportunities

June 2026 Private Equity

  • The Riverside Company 99.6%
  • KKR (Kohlberg Kravis Roberts) 99.2%
  • Blackstone Group 98.9%
  • Warburg Pincus 98.5%
  • Bain Capital 98.1%

Overall Employee Satisfaction

June 2026 Private Equity

  • KKR (Kohlberg Kravis Roberts) 99.6%
  • The Riverside Company 99.2%
  • Ardian 98.9%
  • Blackstone Group 98.5%
  • Starwood Capital Group 98.1%

Professional Growth Opportunities

June 2026 Private Equity

  • Bain Capital 99.6%
  • The Riverside Company 99.2%
  • Blackstone Group 98.9%
  • Starwood Capital Group 98.5%
  • KKR (Kohlberg Kravis Roberts) 98.1%

Total Avg Compensation

June 2026 Private Equity

  • Principal (9) $653
  • Director/MD (24) $547
  • Vice President (97) $363
  • 3rd+ Year Associate (104) $281
  • 2nd Year Associate (234) $272
  • 1st Year Associate (411) $229
  • 3rd+ Year Analyst (33) $157
  • 2nd Year Analyst (95) $134
  • 1st Year Analyst (271) $124
  • Intern/Summer Associate (37) $80
  • Intern/Summer Analyst (351) $61
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

1
redever's picture
redever
99.2
2
kanon's picture
kanon
99.0
3
BankonBanking's picture
BankonBanking
99.0
4
Secyh62's picture
Secyh62
99.0
5
DrApeman's picture
DrApeman
98.9
6
Betsy Massar's picture
Betsy Massar
98.9
7
GameTheory's picture
GameTheory
98.9
8
dosk17's picture
dosk17
98.9
9
CompBanker's picture
CompBanker
98.9
10
Jamoldo's picture
Jamoldo
98.8
success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”