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IT Budget Categories: A Complete Guide

A complete taxonomy of IT budget categories, CapEx vs OpEx classification, and how categories map to financial reporting.

CapEx vs OpEx in IT

Capital Expenditure (CapEx)

Long-lived asset purchases. Capitalised on balance sheet, depreciated over useful life (typically 3-7 years).

  • +On-premise servers and storage arrays
  • +Network hardware (switches, routers, firewalls)
  • +End-user devices (laptops, desktops, mobile devices)
  • +Data centre construction or leasehold improvements
  • +Perpetual software licences (declining)
  • +ERP and CRM implementations (partially)

Operating Expenditure (OpEx)

Recurring costs. Flow through the income statement in the period incurred. Now represents 70-80% of total IT spend for most companies.

  • +SaaS subscription fees (Microsoft 365, Salesforce, Slack)
  • +Cloud infrastructure services (AWS, Azure, GCP)
  • +IT staff salaries and benefits
  • +Managed service provider fees
  • +Software support and maintenance contracts
  • +Security monitoring and managed detection services

Complete IT Category Taxonomy

CategorySub-categoriesType% of IT Budget
HardwareServers, storage, networking equipment, end-user devices, printersCapEx8-15%
Software LicencesERP, CRM, business applications (perpetual/multi-year licences)CapEx / OpEx5-10%
SaaS SubscriptionsMicrosoft 365, Salesforce, Slack, Zoom, project management, HR platformsOpEx15-25%
Cloud InfrastructureAWS, Azure, GCP compute, storage, networking, databasesOpEx10-20%
IT PersonnelInternal staff salaries, benefits, contractors, trainingOpEx28-35%
Security ToolsEDR, SIEM, WAF, identity management, DLP, cyber insuranceOpEx / CapEx10-15%
Support ContractsVendor support, hardware maintenance, extended warrantiesOpEx5-8%
Compliance and AuditPenetration testing, compliance assessments, audit feesOpEx2-5%
Telecoms and ConnectivityBusiness broadband, WAN, phone systems, mobile dataOpEx2-4%
Training and DevelopmentIT staff certifications, security awareness trainingOpEx1-3%

IT Budget Breakdown

Five-category allocation with recommended percentages and red flags.

Cloud Spending Benchmarks

45% of IT budgets now going to cloud services.

IT Staffing Cost Benchmarks

Personnel is 28-35% of IT budget. Team sizing by company size.

CI/CD as an IT Budget Line Item

CI/CD pipeline costs (GitHub Actions, CircleCI, GitLab CI) are a significant and often underestimated line item within the software and infrastructure categories.

Compare CI/CD costs at cicdcost.com →

Infrastructure Monitoring Costs

Infrastructure and application monitoring (Datadog, New Relic, Splunk) is an increasingly significant IT operations cost, often running $50-$500K+ per year.

Benchmark monitoring costs at monitoringcost.com →

Frequently Asked Questions

What are the main IT budget categories?
IT budgets are typically organised into five functional categories: personnel (28-35%), software and SaaS (26-30%), infrastructure and hardware (20-24%), security (10-15%), and support and maintenance (7-10%). Within each category there are multiple sub-categories. For financial reporting purposes, IT spend is also classified as capital expenditure (CapEx) or operating expenditure (OpEx). Cloud and SaaS spending is OpEx; on-premise hardware purchases are CapEx.
What is the difference between CapEx and OpEx in IT?
Capital expenditure (CapEx) covers purchases of long-lived assets: servers, networking hardware, storage arrays, and on-premise software licences with multi-year useful lives. These are capitalised on the balance sheet and depreciated over 3-7 years. Operating expenditure (OpEx) covers recurring costs: SaaS subscriptions, cloud services, staff salaries, support contracts, and maintenance fees. OpEx flows through the income statement in the period incurred. The shift to cloud and SaaS has moved most IT spending from CapEx to OpEx, improving financial flexibility but increasing recurring cost obligations.
How do IT budget categories map to financial reporting?
Personnel costs (salaries, benefits, contractors) appear as operating expenses in the income statement, typically allocated to IT or shared services departments. Software subscriptions and cloud services are recurring OpEx line items. On-premise hardware purchases are capitalised as property, plant and equipment (PP&E) and depreciated. Consulting and implementation project costs may be capitalised (if creating a long-lived asset) or expensed (if recurring). For SaaS implementations, ASC 350-40 (US GAAP) provides guidance on which implementation costs can be capitalised.
What is shadow IT and how does it affect the budget?
Shadow IT refers to technology tools and services procured by business units without IT department knowledge or approval. Common examples include individual SaaS subscriptions, unauthorised cloud storage, personal devices used for work, and unapproved project management tools. Shadow IT typically adds 20-40% to stated IT budgets when fully audited. It creates security risks (unapproved tools may not meet compliance requirements), data governance issues, and wasted spend (duplicate tools). Centralising procurement visibility through a SaaS management platform reduces shadow IT significantly.

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