Twelve questions that come up on the way to a working register, with practitioner answers.
What is a risk register in simple terms?+
A risk register is the structured record of every risk an organisation has identified, with its score, owner, controls, treatment decision, target score, and next review date. It is the artefact that a risk assessment produces and the artefact that the ongoing risk-management programme maintains. Boards, regulators, auditors, and insurance carriers all expect to see one.
What columns should a risk register have?+
Ten columns cover the working minimum: risk ID, description in the threat-vulnerability-impact form, category, owner (named individual), inherent score, controls in place, residual score, treatment decision (accept/treat/transfer/avoid), review date, and escalation status. Mature programmes add target residual score, KRI links, compliance-framework cross-map, and an audit trail of changes.
What is the difference between a risk register and a risk assessment?+
The risk assessment is the process: identify, analyse, evaluate, treat, and monitor. The risk register is the artefact the process produces and maintains between cycles. An assessment without a maintained register is a report that goes stale within a quarter. A register without scheduled reassessments is a museum. Both belong to risk management, which is the ongoing programme that runs them both.
What is the difference between a risk register and a risk treatment plan?+
The risk register lists every risk, scored, with a treatment decision per row. The risk treatment plan is the project record of the treatments that have been decided: controls being designed, owners, deadlines, target residual scores, dependencies. ISO 31000 Clause 6.5.3 separates the two. The register answers 'what is our exposure today,' the treatment plan answers 'what are we doing about it and when.'
How many risks should a risk register hold?+
Twenty to eighty risks is a working range for a first enterprise register. Below twenty, the register is probably missing categories. Above one hundred, you are likely capturing controls or audit findings as if they were risks. Mature ERM programmes split into one enterprise register (board view) plus several operating registers (business unit, system, project) with a documented escalation path between them.
How often should a risk register be reviewed?+
Top-quartile risks review quarterly. The full register reviews at least annually. Ad-hoc reviews fire on material events: a new system going live, a major vendor onboarded, a regulatory change, a sector incident, or any internal incident that revealed a control gap. KRIs supplement the calendar by updating residual scores as evidence arrives.
Who owns the risk register?+
The CRO or head of risk owns the register itself (the methodology, the format, the master copy, the cadence). Each risk row has its own named owner: a business individual accountable for the residual score, who signs off on treatment and escalates when the score moves. The audit committee or board reviews the register; internal audit tests it.
Is a risk register required for ISO 27001 certification?+
ISO 27001:2022 Clause 6.1.2 requires a documented information security risk-assessment process and Clause 6.1.3 requires a documented treatment plan. The register is the working artefact that satisfies both: a single record showing the risks identified, scored, treated, and reviewed. Auditors will ask to see it on day one of the certification audit.
What is the difference between inherent risk and residual risk in a register?+
Inherent risk is the exposure before any controls are credited: the raw threat against the asset. Residual risk is what remains after the controls currently in place are taken into account. The gap between the two shows the work the existing controls are doing. Mature registers also carry a target residual score, the figure the planned treatment is expected to deliver.
Excel or RMIS for the risk register?+
A spreadsheet works for a first register or a programme with one framework and one assessor. It breaks when the programme adds a second framework, a third assessor, or a fourth business unit. A risk management information system (RMIS) centralises the register, the control library, and the treatment workflow, cross-maps controls to compliance frameworks, and produces the board pack without a manual rebuild every quarter.
What is the difference between an enterprise risk register and a project risk register?+
The enterprise risk register (ERM) covers strategic, operational, financial, compliance, cyber, and physical risks to the organisation as a whole, reviewed by the board. The project risk register (PMBOK) covers risks specific to one project's scope, schedule, cost, quality, and resourcing, reviewed by the project sponsor. Mature programmes feed material project risks up into the enterprise register through a documented escalation rule.
Can a risk register be public?+
An enterprise risk register is rarely published in full; the categories, top exposures, and treatment posture often appear in annual reports, 10-K risk-factor disclosures, and SEC cyber-incident filings. UK central government departments publish summary risk registers under transparency rules. Most organisations publish a methodology page and reserve the row-level register for boards, auditors, regulators, and insurance underwriters.