How should IT teams budget for identity and access controls?

Why This Matters for Security Teams

Identity and access controls fail quietly when they are funded like one-time implementations instead of ongoing operational services. Access reviews age out, certificates expire, service accounts accumulate, and offboarding gets delayed unless there is a budget line for continuous work. That is why current guidance from the OWASP Non-Human Identity Top 10 and NHIMG’s Ultimate Guide to NHIs both emphasise lifecycle control, not just initial provisioning.

For IT leaders, the budgeting question is not whether identity controls are valuable. It is whether the organisation is willing to pay for the recurring tasks that keep those controls effective: review, rotation, revocation, logging, and exception handling. Once those costs are hidden inside project budgets, teams start deferring them, and the control gap widens between audit cycles. In practice, many security teams encounter identity debt only after stale entitlements or leaked secrets have already created a material incident, rather than through intentional lifecycle management.

How It Works in Practice

Budgeting should map identity controls to operating cadence, not to isolated deployments. A practical model separates baseline run costs from change-driven work. Baseline spend covers entitlement reviews, privileged access administration, certificate and key rotation, offboarding, logging, and periodic control testing. Change-driven spend covers expansions in cloud footprint, new applications, mergers, third-party integrations, and automation for higher-risk environments.

This is especially important for non-human identities. NHIs behave like infrastructure, but their permissions create risk like privileged users. NHIMG’s Key Challenges and Risks material shows how unmanaged service accounts, API keys, and long-lived credentials compound over time. A budget that funds only onboarding will miss the cost of keeping those identities current.

Teams should also align spend to control ownership. For example:

• IAM and PAM operations for access approvals, recertification, and privilege elevation
• Secrets and certificate management for rotation, expiry handling, and emergency revocation
• Monitoring and detection for anomalous entitlement use, stale accounts, and shadow access
• Governance and audit support for evidence collection, control testing, and remediation tracking

The operating assumption should be that identity controls degrade unless refreshed. NHIMG’s Ultimate Guide to NHIs highlights that many organisations still lack full visibility into service accounts, which means budget also has to cover discovery before optimisation is even possible. Where regulated environments apply, PCI DSS v4.0 reinforces the need for sustained access governance and evidence, not just deployment of tooling. These controls tend to break down in fast-growing cloud environments because entitlement sprawl outpaces review capacity faster than annual budget cycles can respond.

Common Variations and Edge Cases

Tighter identity control budgets often increase operational overhead, requiring organisations to balance security assurance against delivery speed and administrative capacity. That tradeoff becomes visible when teams have frequent contractor turnover, heavy use of third-party integrations, or large numbers of machine identities.

There is no universal standard for how much of the security budget should be assigned to identity, but current guidance suggests funding should reflect risk concentration. Environments with high privilege density, many service accounts, or rapid application change need more recurring spend than stable on-premises estates. NHIMG’s research on NHI exposure shows why: unmanaged credentials and stale permissions create persistent risk, especially when secrets live outside controlled vaults.

Teams should also avoid treating automation as a reason to reduce headcount budget too early. Automation reduces manual effort, but it does not eliminate the need for control ownership, exception review, or incident response. The same applies to licence renewals and vendor contracts: lower tooling spend can still leave a high labour burden if the organisation has not standardised identity lifecycle processes.

Budgeting also changes when identity is shared across IT, security, DevOps, and compliance. In those cases, the cleanest model is often a shared service budget with explicit service levels, so access reviews and revocation timelines do not depend on ad hoc funding. That approach is usually more resilient than one-off project allocations, especially where audit evidence and offboarding discipline matter most.

Related resources from NHI Mgmt Group

• How do IAM teams know if privileged access controls are actually working?
• How should identity teams connect incident management with access governance?
• How should identity teams govern employee experience tools that touch access requests?
• How do IAM teams decide whether an AI security assistant needs its own access controls?