Defining TAM to target: from total market to a B2G target list.

What does TAM to target mean?

TAM to target is the process of turning a total addressable market (TAM) into a prioritized list of target accounts and buyers, and then reaching them with outbound sales.

The phrase is written several ways, including TAM to Target, TAM2Target and TAM-to-target, but the idea is the same. A TAM tells you how big the opportunity is. A target list tells your sales team who to call on Monday. The steps in between decide whether outbound effort goes to agencies that can actually buy, or gets spread thin across thousands that can't.

In business-to-government (B2G) sales, this matters more than in most markets. Government buyers are numerous, organized by type and function, and governed by budget cycles and procurement rules. A good TAM-to-target process uses that structure instead of fighting it.

Step 1: Size your B2G total addressable market

Your TAM is every organization that could plausibly buy what you sell. For state and local government, the Census of Governments is the standard starting point. It counts every local government in the country by type:

Source: U.S. Census Bureau, Government Organization Summary Report: 2022 and 2025.

On top of these come the 50 state governments and their agencies, federal departments and agencies, tribal governments, public colleges and universities, and publicly owned utilities. Each is its own buyer with its own budget.

Start by writing down which of these types use your product, and in which department. A body-worn camera company's TAM is law enforcement agencies; a utility billing platform's TAM is publicly owned water, power and gas utilities. Then count them.

Step 2: Narrow it to your serviceable market

Your serviceable addressable market (SAM) is the part of the TAM you can realistically win and serve today. Common filters in government sales:

• Function or department: not every city runs its own utility, police department or transit system.
• Size: population served, enrollment, budget or number of employees, matched to where your product fits and your price makes sense.
• Geography: states where you have references, can meet in person, or meet state-specific requirements.
• Procurement access: agencies that can buy through a cooperative contract or state contract you hold, or that buy below formal bid thresholds.
• Technology and incumbents: agencies running a system you integrate with, or a competitor's product nearing the end of its contract.
• Regulatory or funding triggers: new mandates, grant programs or deadlines that create a reason to buy.

Most companies find their SAM is a small fraction of the TAM. That's good news: it tells you where outbound effort will pay off.

Step 3: Build a B2G ideal customer profile

Your ideal customer profile (ICP) describes the agencies most like your best customers. Look at the deals you've won and how quickly they closed, and note what they have in common:

• Government type, department and size.
• Budget source: general fund, enterprise fund, capital program or grant.
• Systems and vendors already in place.
• The problem that triggered the purchase, and who raised it.
• How they bought: cooperative contract, RFP, quote or sole source.

Pair the account profile with buyer personas: the roles that feel the problem, approve the budget and run the purchase.

Step 4: Turn the serviceable market into tiered target accounts

Score each serviceable account on fit (how closely it matches your ICP) and timing (public signals that it's preparing to buy). Then tier the list so outreach effort matches opportunity:

Useful timing signals include a budget line item or capital project, an RFI or sole-source notice, a grant award, an expiring contract, a new department head and council or board discussion of the problem. Our guide to government buying signals covers where to find each one.

Step 5: Map the buying group at each account

Government purchases rarely rest with one person. A typical buying group includes:

• End users and department heads who own the problem and champion a solution.
• IT, which reviews security, integration and support.
• Procurement, which decides how the purchase can legally be made.
• Finance and budget staff, who confirm funding.
• Executives and elected officials, such as a city manager, superintendent or council, who approve larger purchases.

Build contacts for several of these roles at every Tier 1 account. Public directories, agency websites, council agendas and association member lists are all good sources. See our guide to public sector market research.

Best practices for outbound sales to your B2G target market

1. Lead with their situation, not your product. Reference the agency's own priorities: a goal in its strategic plan, a project in its budget, a problem raised at a public meeting.
2. Time outreach to the budget cycle. Most agencies decide next year's spending months before the fiscal year starts. Use our government fiscal year calendar to plan.
3. Use the phone. Many public-sector buyers rarely answer cold email but will talk to a knowledgeable caller. Phone-led outreach supported by email is a reliable pattern in government.
4. Multi-thread every Tier 1 account. Reach the department head, IT and procurement, not just one contact, so a single retirement or reassignment doesn't stall the deal.
5. Show you understand how they buy. Know whether they can use a cooperative contract, what their purchasing thresholds are and when a formal bid is required.
6. Respect public-sector ethics rules. Avoid gifts and meals that could break an agency's rules, and keep communications professional, because many are public records.
7. Use peers as proof. Agencies trust other agencies. Name comparable customers and offer peer references.
8. Be patient and persistent. Government sales cycles often run months or longer. Keep Tier 2 accounts warm with useful, low-pressure follow-up until the timing is right.
9. Work the events and associations. Book meetings before conferences and engage through the associations your buyers belong to.
10. Feed what you learn back into the list. Every conversation reveals budgets, timelines and incumbents. Use it to re-tier accounts.

How to measure TAM-to-target progress

• Coverage: the share of Tier 1 and Tier 2 accounts with at least one meaningful conversation.
• Depth: how many buying-group roles you've reached at each Tier 1 account.
• Meetings and pipeline: qualified meetings and opportunities created, by tier and segment.
• Signal capture: new buying signals learned from conversations.

If meetings come mostly from Tier 3, revisit your ICP. If Tier 1 coverage is low, add outreach capacity before adding accounts.

Common mistakes

• Treating all 90,000+ local governments as one market instead of segmenting by type and function.
• Buying a list and emailing it without tiering or research.
• Contacting only procurement, or only the end user.
• Giving up after a few touches when the agency simply isn't in its buying window yet.

How KSG helps

Kensington Sales Group helps companies that sell to government run the full TAM-to-target process: segmenting the market, building tiered account lists, mapping buying groups and running phone-led outreach that books qualified meetings with the right agencies. See how our B2G lead generation works.

This guide covers the TAM-to-target method. Kensington Sales Group is not affiliated with any company of a similar name.