Prior-Quarter GRR
Gross Revenue Retention reported in the PRIOR period — the comparison anchor for the current `customers.gross_revenue_retention`. The board reads the two together to render the GRR trend on the bespoke customers retention grid. Per the SMSB GRR definition (excludes expansion, capped at 100%), both periods must use the same cohort basis for the delta to mean anything. Common pitfall: reading a GRR trend without the matching NRR trend — the gap between them is the expansion signal. — Customers KPI, I'mBoard-authored (editorial tier).
I'mBoard-authored (editorial tier)
No public third-party standard anchors this KPI yet, so I'mBoard authors and maintains the definition — transparently labeled as editorial tier. See the ontology methodology for the published vs editorial tier system and the back-attribution workstream.
Rogue ID: customers.prior_quarter_grr
Type: Percentage (%)
Domain: Customers
Definition
Gross Revenue Retention reported in the PRIOR period — the comparison anchor for the current customers.gross_revenue_retention. The board reads the two together to render the GRR trend on the bespoke customers retention grid. Per the SMSB GRR definition (excludes expansion, capped at 100%), both periods must use the same cohort basis for the delta to mean anything. Common pitfall: reading a GRR trend without the matching NRR trend — the gap between them is the expansion signal.
Formula
GRR from the prior period, on the same SMSB closed-start cohort basis as the current `customers.gross_revenue_retention`. grrTrend = gross_revenue_retention − prior_quarter_grr (in points).Why it matters
A declining GRR is the truest early churn signal — it cannot be masked by expansion the way NRR can.
How to interpret
Persistent GRR decline with flat NRR is a product/onboarding problem hidden by upsell. Pair with customers.prior_quarter_nrr to read the expansion gap.
Related KPIs
customers.gross_revenue_retentioncustomers.prior_quarter_nrrcustomers.net_revenue_retention
Source
I'mBoard editorial — authored and maintained by I'mBoard, first published 2026-04-01. No third-party standard is cited for this KPI; when one emerges, the definition is back-attributed and promoted to the published tier (a minor version bump). Read the ontology methodology for the published vs editorial tier system, attribution rules, and dispute process.
Stage relevance
| Company stage | Priority |
|---|---|
| Series A | Core |
| Series B | Core |
| Series C+ | Core |
| Public | Core |
Suggested for stages: Series A, Series B, Series C+, Public.
Default owning functions
- Finance
- Sales
Machine-readable
- This KPI as JSON:
/api/ontology/customers/prior_quarter_grr.json - All Customers KPIs:
/api/ontology/customers.json - Full catalog:
/api/ontology/index.json
Prior-Quarter Concentration
The top-customer ARR concentration reported in the PRIOR period — the comparison anchor for the current `customers.top_customer_concentration`. The board reads the two together to render the concentration trend on the bespoke customers card (rising concentration = growing single-account dependency risk). Common pitfall: comparing a top-1 concentration to a top-5 concentration across periods — keep the "top-N" cut identical. — Customers KPI, I'mBoard-authored (editorial tier).
Prior-Quarter NRR
Net Revenue Retention reported in the PRIOR period — the comparison anchor for the current `customers.net_revenue_retention`. The board reads the two together to render the NRR trend on the bespoke customers retention grid. Per the SMSB NRR cohort definition, both periods must use the same closed-start-cohort methodology for the delta to be meaningful. Common pitfall: comparing an NRR computed on a different cohort window across the two periods. — Customers KPI, I'mBoard-authored (editorial tier).