How to Choose an ABM Agency: A Five-Step Guide With a 25-Item RFP Checklist

The short version

Choosing an ABM agency comes down to three decisions in order: which tier of ABM you are buying, which three firms in that tier deserve an RFP, and which of those three can prove account-level results on a stack like yours at a price that still works when media scales. Skip the first decision and you will spend the RFP comparing a strategy consultancy with a LinkedIn Ads shop, which produces a meaningless scorecard. This guide walks through each decision, gives you a 25-item RFP checklist to score proposals, and lists the red flags that should end a conversation. It draws on the fifteen firms in our ranked directory, with sources at the bottom.

Step 1: Decide which tier of ABM you are buying

The tier is determined by your deal size and the number of accounts that matter, not by what the agency sells. ITSMA, which introduced the term in 2003, describes three tiers, and every agency in this directory fits mainly into one.

Strategic (one-to-one) ABM

A bespoke plan per account for a small number of accounts, usually 5 to 50, where each deal is seven figures or more and the buying committee is large. Deliverables are account insight, stakeholder maps, executive-engagement programs and account-specific value propositions. This is consulting work. Momentum ITSMA, Agent3 and Strategic ABM specialize here, and their engagements are priced like consulting: six figures a year, or project fees for audits and training. They do not run large paid-media budgets.

One-to-few ABM

Accounts clustered into groups of 5 to 15 that share an industry, a trigger or a use case, with programs built per cluster. The same specialists cover this tier, as do the full-service enterprise agencies (The Marketing Practice, Transmission, dentsu B2B, Just Global) that can add media and creative at scale across regions.

One-to-many (programmatic) ABM

Targeted campaigns to lists of hundreds or thousands of accounts, mostly through LinkedIn, programmatic display, Meta and search, with retargeting and account-level reporting. This is where Directive, Refine Labs, Powered by Search, Ironpaper, Kalungi, Six & Flow and Inflection operate, and for most SaaS companies under $100 million in revenue it is the tier that moves pipeline. It is also the tier where a platform such as Metadata.io (our sponsor, disclosed) competes directly with an agency retainer; see agency vs. platform.

A quick self-test: if your sales team has fewer than 50 accounts it would recognise by name and your average deal is under $100,000, you are buying one-to-many. If your top 20 accounts each justify a dedicated plan and an executive sponsor, you are buying strategic ABM, and possibly one-to-many underneath it from a second vendor.

Step 2: Build a shortlist of three

Three is enough. More than three RFP responses means your team skims them, and agencies can tell when they are one of eight. Use these filters, in order, against the firms in your tier.

Filter on stack experience

ABM runs through your CRM, marketing automation and, if you have one, your ABM platform. Six & Flow, Ironpaper and Kalungi are HubSpot partners and build ABM on HubSpot's target-account tooling. Agent3, Momentum ITSMA and the enterprise firms routinely work alongside 6sense and Demandbase. The performance agencies live in LinkedIn Campaign Manager and Google Ads and push results back to Salesforce or HubSpot. Ask each candidate for one reference client on your exact stack. A partner badge is not evidence.

Filter on company-size fit

Read the case studies and note the size of the clients. Directive's published work skews toward Series B to public companies with meaningful media budgets (Calendly, ZoomInfo, Sumo Logic). Powered by Search's skews toward Series A to C SaaS. Momentum ITSMA's award case studies name Fujitsu, Microsoft, SAP and Accenture. An agency whose clients are all ten times your size will staff you with its most junior team; one whose clients are all a tenth of your size may not have the process for your procurement and security reviews.

Filter on public proof and reviews

For one-to-many agencies, Clutch is the best public signal: Directive (4.8), Powered by Search (4.9), Ironpaper (4.8), Kalungi (4.9) and Six & Flow (4.9) all carry dozens of verified client reviews. Read the critical ones. For strategic and enterprise firms, Clutch coverage is thin because enterprise clients do not leave agency reviews; use ITSMA Marketing Excellence and B2B Marketing Awards case studies instead, and call the marketer named in them.

Filter on published minimums

Clutch lists $10,000+ minimum project sizes for Directive, Ironpaper and Powered by Search, and $5,000+ for Six & Flow. Kalungi publishes package pricing on its site. If your monthly budget is below an agency's published floor, do not send the RFP; ask for an audit or a project instead. Our pricing page has the full set of published figures.

Step 3: The 25-item ABM agency RFP checklist

Send these questions to all three shortlisted firms and score each answer 0 to 2 (0 = missing or evasive, 1 = adequate, 2 = strong with evidence). Weight Critical items at 3x, High at 2x, Medium at 1x. The maximum weighted score is 100, which makes comparison easy. Copy the table into a spreadsheet; the priority column tells you where to spend interview time. A downloadable version is on the RFP template page.

Nine items are marked Critical. If an agency scores 0 on any two of them, drop it regardless of its total; those items (account selection, tier fit, sales cadence, account-level reporting, metrics, named team, base fee, media fee and references) are the ones that predict whether the engagement works at all.

Step 4: What to do in the interviews

The RFP tells you what an agency says; the interview tells you how it thinks. Three exercises work well.

Give them ten real accounts

Share ten target accounts a week before the call and ask the team to walk through how it would approach three of them. You will learn immediately whether the agency does account research or just audience targeting, and whether the people talking are the people who would do the work.

Ask them to critique your current reporting

Show your existing dashboard. A performance agency should be able to explain what it would add at the account level; a strategic agency should talk about coverage and engagement across the buying committee. Either way, if the critique is about CPL, you are talking to a lead-gen shop.

Make them say what they will not do

Good agencies have a clear boundary and a referral partner for what lies outside it. Momentum ITSMA will tell you it does not run large media budgets. Just Global will tell you it is a media specialist, not a strategy shop. Refine Labs is explicit that its playbook depends on client-side narrative and creative. An agency that claims to do everything will do some of it badly.

Step 5: Negotiate the commercials before you pick

Get the fee structure in writing from all three finalists before making the decision, because the cheapest headline retainer is often the most expensive at scale. The three questions that matter: what is the base fee and scope, how is media charged (flat, percentage or tiers) and at what spend levels does the rate step down, and who owns the ad accounts, audiences and creative when the contract ends. Ask directly about rebates and principal media positions; this matters most with holding-company entries such as dentsu B2B. Aim for a 90-day notice period after an initial three-to-six-month term. The pricing page gives ranges for each structure.

If the finalists are all one-to-many performance agencies and most of your budget is media, run the same numbers against a platform subscription plus one in-house hire. That comparison is on the agency vs. platform page and should be part of any RFP over roughly $50,000 per month in media.

Red flags that should end the conversation

• Reporting that stops at leads and CPL. Account-based marketing that is not reported at the account level is not account-based.
• Guaranteed meetings or pipeline. Meetings can be manufactured; pipeline in 30 days is demand capture, not ABM.
• The pitch team is not the delivery team. Ask for names and tenure in the proposal.
• No account-selection method. "Send us your list" means the agency has no view on which accounts are worth the money.
• Vague media fees. "We'll work something out" becomes 20 percent of a number that keeps growing.
• Anonymous case studies. "A leading cybersecurity company" is not a reference.
• No sales cadence. An agency that has never sat in a pipeline review with a client's sales team has never run ABM.

Common mistakes buyers make

The most common mistake is hiring the right agency for the wrong tier: a strategic consultancy when the real need is media execution, or a performance agency when the need is bespoke plans for twenty accounts. The second most common is signing before sales has agreed to the account list, which leaves the agency running campaigns to accounts nobody will call. Third is treating the RFP as a beauty contest rather than a scoring exercise; the checklist above exists to prevent that. Fourth is comparing only agencies when a platform plus one hire would cost less for the same media. Fifth is judging on the first 60 days, when the only honest signal is engagement, and cancelling before pipeline can show up.

Frequently asked questions