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What does account churn actually cost your business?

B2B account churn is rarely modelled honestly. This calculator shows the true annual cost — including replacement revenue, acquisition costs, and the contracted value you defend when you catch accounts early.

Your account portfolio

Total number of key accounts Accounts generating meaningful recurring revenue

Average annual contract value per account ARR or ACV per key account

€120,000

Current annual churn rate % of accounts not renewed per year

12%

Customer acquisition cost (CAC) Fully-loaded cost to acquire a new account of this size

€40,000

If you detected at-risk accounts 90 days earlier, what % would you save? Based on structured CAPA and proactive outreach

30%

The full cost of your current churn rate

Accounts lost per year

at current churn rate

Revenue lost per year

€360,000

in contracted ARR

Replacement CAC

€120,000

to replace lost accounts

Total annual churn cost
€480,000
lost revenue + acquisition cost to replace

At 12% churn across 25 accounts, you lose approximately 3 accounts per year. The revenue gap is €360,000. Adding the cost to replace those accounts brings the true annual cost to €480,000.

Accounts saved with early detection

0.9

accounts recovered per year

Annual value defended

€144,000

revenue + CAC not spent

Based on detecting at-risk accounts 90 days earlier with structured health scoring and a CAPA process.

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How to interpret this calculator

This calculator models the full economic cost of B2B account churn using four inputs: portfolio size, average contract value, churn rate, and customer acquisition cost. The output includes the direct revenue loss, the replacement cost, and the total annual churn cost — which is typically 2–3 times larger than the revenue figure alone because of CAC.

The “value defended” figure models what early detection is worth. If you can identify at-risk accounts 90 days earlier and a structured recovery process (CAPA) converts some percentage of those accounts, the economic value is the saved revenue plus the acquisition cost you don’t need to spend.

The save rate defaults to 30%, which is conservative. Teams with a structured CAPA process and dedicated recovery ownership typically report higher rates. Teams without a structured process often report lower rates because by the time they act, the client has already decided. Use the QBR prep cost calculator to see the operational overhead alongside the churn cost.