The 30-60-90 Every New CSM Should Run

The first 90 days as a new CSM determine whether you build trust with your book or play catch-up for the next two years. Most new CSMs default to introducing themselves and asking how things are going. Top CSMs run a structured plan that maps stakeholders, identifies expansion opportunities, and surfaces risk before the renewal conversation. The plan that works is more disciplined than the default.

Days 1-30: Account intelligence and introductions

The first 30 days are about understanding the book, not changing it:

• Review every account’s history: contract, ARR, products used, support tickets, past CSM notes, NPS responses
• Map known stakeholders: primary champion, economic buyer, end users, executive sponsor
• Pull usage data on every account: who’s adopting, who’s stalled, who’s expanding
• Schedule 30-minute intro calls with every top-tier account in the first 3 weeks
• Listen heavily — what’s working, what’s broken, what they wish was different
• Document everything in a structured account brief per customer

Critical: don’t promise anything in the first 30 days. You don’t have the context to commit. Listen, document, observe.

Days 31-60: Stakeholder mapping and success planning

The second 30 days are about depth on the top accounts:

• Build full stakeholder maps for top 10 accounts — names, roles, influence level, sentiment
• Identify second and third champions beyond the original buyer
• Draft mutual success plans for strategic accounts — defined business outcomes, success metrics, milestone dates
• Begin QBR scheduling for accounts that haven’t had one in 90+ days
• Surface early expansion signals to the AE counterpart for top accounts
• Identify at-risk accounts and begin intervention planning

Days 61-90: Execution and momentum

The third 30 days are about visible execution:

• Run the first round of QBRs for top accounts with substantive business reviews
• Close out at least one expansion opportunity in partnership with sales
• Intervene on at least one at-risk account with documented save plan
• Establish operating cadence with each account — call frequency, QBR frequency, escalation paths
• Review book performance against ramp benchmarks with manager
• Document your standard operating procedures so the patterns become repeatable

What top quartile new CSMs do differently

• They run weekly book reviews with their manager from week 1, not week 6
• They invest 2-3 hours per week studying customer industries — earnings calls, press releases, hiring patterns
• They build AE partnerships intentionally in month 1, not by accident later
• They identify the 20% of accounts that will drive 80% of their NRR — and they prioritize ruthlessly
• They’ve documented their playbooks by day 90 so they don’t have to rebuild them every quarter

The mistakes to avoid

• Generic check-in calls: “How are things going?” calls without purpose drain customer time and signal weak CSM
• Promising features: New CSMs eager to please commit to product roadmap items that don’t exist. Avoid
• Avoiding hard conversations: An at-risk account in month 2 is easier to save than the same account in month 8
• Working alone: AE counterpart, manager, product team — partners matter. New CSMs who try to handle everything themselves struggle

The credibility curve

• Month 1: Quiet observation, building context
• Month 2: Visible engagement on top accounts
• Month 3: First measurable wins — expansion, save, QBR feedback
• Month 6: Real credibility — customers asking for you by name
• Month 12: Trusted advisor relationship across the book