The short answer
An account manager looks after a company's existing B2B customers once the contract is signed. The job has four parts: keep the customer, grow what they buy, secure the renewal, and speak for the customer inside your own company when something goes wrong. An account executive wins new customers, an SDR books first meetings, a key account manager runs a handful of strategic accounts, and customer success drives adoption of the product. Account managers are measured on net revenue retention (starting revenue plus expansion, minus downgrades and churn, as a share of starting revenue), gross revenue retention, renewal rate and expansion revenue. The good ones do not wait for the renewal date: they notice a new director, a merger, a hiring wave or weaker filed accounts at the customer, and act months before the contract comes up.
The metric definitions follow standard subscription finance usage, as set out in Klipfolio's guide to net and gross retention, read on 1 October 2026. Role titles vary between companies.
What an account manager does
The account manager owns the relationship after the sale. In Dutch the title is simply accountmanager; job ads sometimes add binnendienst (inside, by phone and video) or buitendienst (field, with customer visits).
Retention. Make sure the customer gets the value they bought, spot dissatisfaction early and fix it before it turns into a cancellation.
Growth. Find where the customer could use more: more users, more sites, a second product, a higher tier. How to do that without pushing is covered in upselling and cross-selling in B2B.
Renewals. Start the renewal conversation well before the notice period, agree on price changes, and get the contract signed on time.
Customer advocacy. Bring the customer's problems to delivery, support, finance or product, and keep chasing until they are solved. A customer who knows someone will fight for them is harder for a competitor to win.
All four serve one number: what the customer is worth over the whole relationship. Customer lifetime value in B2B explains how to calculate it.
Account manager, account executive, KAM, SDR and customer success
Small companies often give all of this to one or two people. In a larger team the split tends to look like this.
Role | Main job | Works with | Measured on |
|---|---|---|---|
SDR (sales development representative) | Qualify interest and book first meetings | Prospects that are not yet customers | Meetings held, qualified pipeline created |
Account executive (AE) | Run the sales cycle and close new customers | Open opportunities | New revenue against quota |
Account manager | Retain, renew and grow existing customers | A portfolio of customers, often dozens | Net and gross revenue retention, renewal rate, expansion revenue |
Key account manager (KAM) | Plan and coordinate a few strategic customers across many teams | A small number of large accounts, often with several sites or countries | Revenue and margin per account, multi-year account plans |
Customer success manager (CSM) | Onboarding, adoption and ongoing value from the product | Users at the customer | Usage, health scores, gross retention |
The SDR and AE sit before the signature; what an SDR does covers that side. The clearest line between an account manager and customer success is commercial: the CSM makes sure the product is used, the account manager owns the contract, the price and the expansion.
Key account management is account management for the few customers that carry a large share of revenue. The KAM coordinates every team that touches the account and plans it over several years, not a quarter.
In Dutch-speaking job markets you will also see commercieel medewerker. It is a broader title: often an inside sales role that handles quotes, orders and questions from existing customers. Read the tasks, not the title.
A realistic week
Schedules differ by portfolio, but a week often looks like this.
Monday: the renewal list. Go through every contract that renews in the next 90 to 180 days. Who signs, is the customer happy, what could block it, is there room to grow?
Tuesday and Wednesday: customer meetings. Business reviews: what was delivered, and what the customer plans for next year.
Throughout: escalations. A late delivery, an invoice dispute or a support ticket that stalls. The account manager owns the follow-up until the customer hears it is solved.
Thursday: expansion work. Proposals for more users or a second product, prepared with the customer's own numbers.
Friday: account research and the CRM. Check what changed at each customer, update contacts who left or changed role, and write notes a colleague could take over from.
The KPIs, defined
Four numbers cover most of it. All measure only customers that existed at the start of the period.
Net revenue retention (NRR). Recurring revenue from existing customers at the end of the period, divided by their recurring revenue at the start. Formula: (starting revenue + expansion minus contraction minus churn) / starting revenue. Above 100 percent means the existing base grew on its own.
Gross revenue retention (GRR). The same, without expansion: (starting revenue minus contraction minus churn) / starting revenue. It cannot go above 100 percent, which is why it shows retention without the flattering effect of upsells.
Renewal rate. Contracts renewed divided by contracts that came up for renewal in the period. Count it by number and by value: one large loss and ten small ones tell different stories.
Expansion revenue. Extra recurring revenue from existing customers through upsell, cross-sell, more users or more volume.
Published benchmarks depend heavily on contract size and pricing model, so set targets from your own last four quarters. How these fit into a wider set of sales metrics is covered in the sales KPIs guide.
The skills that matter
Commercial judgement. When to propose more, and when to protect the relationship first.
Business understanding. Reading a customer's situation from their plans, their team and their filed accounts, not only from support tickets.
Negotiation. Renewals and price increases are negotiations, even with happy customers.
Internal influence. Getting delivery, finance or product to move for a customer without authority over them.
Multi-threading. Knowing several people at each customer, so one departure does not end the relationship.
Using account signals to act before the renewal
A lost renewal is usually visible months earlier. Four kinds of change at a customer deserve a call the week they happen.
Director and decision-maker changes. A new managing director or CFO may review suppliers in the first months. Your champion leaving can quietly end a healthy account. In Belgium, appointments and resignations of directors are published in the Official Gazette; how to track director changes shows where to look. Action: introduce yourself to the new person early, with a short summary of what you deliver and what it is worth to them.
Mergers and restructurings. When your customer merges, purchasing is often consolidated and contracts are reviewed. A Belgian merger proposal is filed at least six weeks before the decision, so there is time; how to track mergers in Belgium explains the trail. Action: find out who buys after the merger, and whether the other company uses a competitor.
Hiring. A customer hiring in the team that uses your product is an expansion signal: more users, more sites, more volume. Action: raise it before the new people start.
Financial changes. Falling equity, fewer staff or accounts filed late point to budget pressure, a downgrade or payment risk. How to spot a customer heading for trouble lists the signs in the order they tend to appear. Action: talk about value and terms before the customer raises cost.
Checking this by hand works for ten customers, not eighty. Bizzy brings the people, restructuring and financial signals together on each customer's record. The Signals tab shows job changes at the company, sourced from LinkedIn, with the old and new title and the date. The Documents tab of the Belgian legal entity lists its Official Gazette publications by type, including appointments and dismissals and restructurings such as mergers, and the Financials tab shows four years of filed accounts from the National Bank of Belgium. Existing company and contact records in HubSpot, Salesforce, Pipedrive, Microsoft Dynamics 365, Teamleader Focus or Odoo can be completed from Bizzy, so your CRM stays current. Plans start free; see pricing.
The role that leads the team: what a sales manager does.
Frequently asked questions
What does an account manager do? An account manager looks after existing B2B customers: keeping them, growing what they buy, securing renewals and speaking for them inside the supplier.
What is the difference between an account manager and an account executive? An account executive wins new customers and is measured on new revenue. An account manager takes over after the signature and is measured on retention, renewals and expansion.
What is key account management? Account management for the few customers that carry a large share of revenue, with a multi-year plan per account and coordination across every team that serves it.
Which KPIs does an account manager have? Mainly net and gross revenue retention, renewal rate and expansion revenue.
Photo: the town hall of Damme, Marc Ryckaert, CC BY-SA 4.0, via Wikimedia Commons