CARR
Definition
Contracted Annual Recurring Revenue — recognized MRR × 12 plus the annualized value of contracts that are signed but not yet live (i.e. implementation, ramp, deferred-start). Per the SMSB standard, CARR sits between ARR (live only) and pipeline (unsigned) on the revenue-certainty spectrum: contractually committed but not yet delivered. Boards reading CARR > ARR gap can quantify the in-flight implementation backlog and the leading indicator of next-period ARR. Common pitfall: counting verbal commitments or LOIs as CARR — only signed contracts qualify under the SMSB definition.
Why it matters
A leading indicator that ARR alone misses — if CARR is growing faster than ARR, an implementation backlog is building and ARR will accelerate as those contracts go live. Boards use the CARR-to-ARR ratio to interrogate the implementation engine.
How it's calculated
CARR = ARR (live, recognized contracts annualized) + Annualized value of signed contracts not yet in production. Per SMSB §CARR: requires a signed contract; excludes verbal commitments, letters of intent, and pipeline. The (CARR − ARR) gap = in-flight ARR awaiting go-live. How to interpret it
A CARR / ARR ratio of 1.00 means everything signed is already live (no implementation backlog); 1.10–1.20 is typical for enterprise SaaS with multi-month implementation timelines; > 1.30 may signal either an implementation bottleneck (operational risk) or a deliberate backlog-build before a known activation event (intentional). Always cross-reference with the implementation team's capacity plan.
Source
SaaS Metrics Standards Board · CARR
Metric definitions reference standards published by the SaaS Metrics Standards Board (saasmetricsboard.com). imboard is not affiliated with, endorsed by, or a member of SMSB.
Stage relevance
Typically owned by
Related KPIs
Annual Recurring Revenue — the value of all recurring subscription revenue normalized to a one-year run-rate as of the period close. The headline operating metric for a subscription business; every growth and efficiency ratio (NRR, GRR, magic number, CAC payback, Rule of 40) is calibrated against it. Excludes one-time fees, professional services, and non-contractual usage. Common pitfall: confusing ARR (contracted recurring) with revenue (recognized) or with CARR (contracted incl. not-yet-live) — the SMSB standard draws sharp lines between them, and boards expect the same discipline. The KpiVarianceTable widget surfaces forecast / actual / variance / status / future-forecast columns against the same field.
Annualized recurring revenue booked from net-new logos (first-time customers) during the period. This is the "hunt" line of the ARR waterfall — the output of the new-customer acquisition motion, distinct from expansion (existing-customer upsell) and from churn / downgrades. Common pitfall: counting renewals or expansion deals as new business inflates the new-logo conversion engine and hides a stalled acquisition motion. The KpiVarianceTable widget shows period forecast vs actual; downstream views compare it to S&M spend to derive new-business CAC and CAC payback.
Total fully-loaded S&M spend in the period divided by the dollars of new CARR generated in the period (new-customer + expansion CARR combined). Per the SMSB standard, the headline efficiency ratio for the full sales-and-marketing motion — answers "how many cents do we spend on S&M to add one dollar of contracted ARR." Common pitfall: blending without separately reporting New CAC Ratio and Expansion CAC Ratio hides which side of the motion is driving efficiency — for a healthy SaaS company expansion CAC is usually 3–5× cheaper per dollar than new-logo CAC.
S&M expense attributable to new-customer acquisition divided by the new-customer CARR generated in the period. Per SMSB, the cleanest read on the new-logo acquisition engine's efficiency — strips out the expansion motion which has materially different unit economics. Common pitfall: failing to split AE comp time correctly between new and expansion activities — when the same AE owns both motions, an allocation rule (often the % of OTE tied to new-vs-expansion quota) is required and must be applied consistently quarter-over-quarter.
Total dollar value of all signed contracts that have not yet been recognized as revenue — the visibility window into future revenue at a point in time. Closely related to sales.bookings_backlog; this entry serves as the FlowSubform `start` slot for the per-period bookings-backlog flow (open + new bookings − recognized − cancellations = close). Common pitfall: omitting cancellations from the flow leaves a phantom backlog that overstates future revenue visibility — every backlog flow needs an explicit cancellation line even when zero.
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