Methodology
How ITBudgetCalculator.com sources, derives, and verifies IT spend benchmarks. Every percentage range, salary input, and growth rate on this site should be re-derivable from a named public source using the framework below.
Sources
Each benchmark on the site cites the named public source of record. Where two sources disagree, the wider range covering both numbers is shown. Where a source sits behind a paywall (Gartner subscription, IDC subscription), the press-release archive is the publicly verifiable proxy.
| Source | Refresh cadence | What we take from it |
|---|---|---|
| Gartner IT Spending Forecast | Quarterly | Headline global IT spending number ($6.15 trillion in 2026, up 10.8% YoY), segment splits (data centres $582.4B +19.0%, devices $906B +18.6%, software $1.24T +13.0%, IT services, communications services), and AI-specific spending growth rate (+80.8% YoY). The press release archive is the public source of record; the underlying Forecast report sits behind the Gartner subscription paywall. |
| Flexera State of Tech Spend | Annual | SaaS waste rates (Flexera reports ~30% of SaaS licences underused), cloud overspend percentages (typical 25-35% over plan), IT budget allocation across hardware / software / cloud / services, and the SaaS-share trajectory that informs the 26-30% software-and-SaaS category band. |
| Deloitte CIO Survey / Global Tech Leadership Study | Annual | CIO priorities for the year (AI scaling, security investment, FinOps adoption), AI deployment timelines, security budget direction signals, technical-debt reduction priorities. Source used for the 76% of CIOs deploying agentic AI by end of 2026 statistic and for the priority-ranking framing on the spending-forecast page. |
| Spiceworks Ziff Davis State of IT | Annual | SMB IT budget breakdowns by hardware / software / cloud / services, per-employee spend ranges in the SMB segment, IT spending year-on-year direction, and the historical trajectory of cybersecurity as a percentage of IT budget (from 10.2% in 2022 to 14.8% in 2026 for SMBs). Free public report download. |
| IDC Worldwide IT Spending Guides | Quarterly | Industry-vertical splits (financial services 7-10%, healthcare 6-9%, manufacturing 2-5%), regional splits, and segment growth context. Used to triangulate against Gartner for the by-industry benchmark ranges. Underlying data sits behind IDC subscription; public press releases give segment-level numbers. |
| US Bureau of Labor Statistics OEWS | Annual | Occupational Employment and Wage Statistics for IT roles: computer and information systems managers, information security analysts, software developers, network and systems administrators, computer support specialists. Source for the loaded US salary inputs on the staffing-costs page (load multiplier 1.3x base salary for benefits, payroll tax, and overhead). |
| CompTIA IT Industry Outlook | Annual | Industry-trend reference for SMB IT spending direction, hiring patterns, and skills shortage indicators. Used as a secondary cross-reference against Spiceworks State of IT for the SMB segment narrative on /small-business. |
| AWS / Azure / GCP public pricing | On change | Cloud reference rates for the cloud-spending page. Compute, storage, and egress per-unit prices at on-demand list rates in US East 1, East US 2, US-Central-1 respectively. Spot and reserved discounts noted in scope but not used for benchmark ranges since they introduce too much variance. |
| IBM Cost of a Data Breach Report | Annual | Public-source data breach cost reference ($4.45M global average in the most recent published study). Used on /cybersecurity-budget to anchor the 20-40x return-on-investment framing for proactive security spend. |
| Verizon Data Breach Investigations Report | Annual | Breach pattern reference (ransomware share, attack vectors, time-to-detection). Used qualitatively on /cybersecurity-budget for the threat-trajectory framing that justifies the SMB security-spend climb from 10.2% to 14.8% in four years. |
| Cloud Security Alliance research | On change | Cloud security threat landscape and shared-responsibility-model framing. Reference for the security sub-allocation discussion (40% software / 30% personnel / 15% hardware / 15% services). |
| Apptio Technology Business Management research | On change | Technology Business Management (TBM) taxonomy reference for the categories page. Used as background for the CapEx vs OpEx classification and the five-category allocation model. No specific dated numbers drawn from this source; framing only. |
In scope
- +Published percentage-of-revenue ranges from named analyst sources (Gartner, Flexera, Deloitte, Spiceworks, IDC, CompTIA).
- +Industry-vertical benchmark ranges (financial services, healthcare, technology, manufacturing, retail, professional services, education, non-profit, government, energy).
- +Five-category allocation ranges (personnel 28-32%, software and SaaS 26-30%, infrastructure 20-24%, security 10-14%, support 7-10%) shown as ranges, not point estimates.
- +Company-size brackets (startup 1-50, SMB 51-250, mid-market 251-1,000, enterprise 1,001-5,000, large enterprise 5,000+) with corresponding spend percentages and per-employee dollar ranges.
- +Cybersecurity sub-allocation (40% software / 30% personnel / 15% hardware / 15% services) and the regulated-vs-unregulated split.
- +Cloud share of IT (45% of IT budgets in 2026 across SaaS + IaaS + PaaS) and the SaaS-share trajectory.
- +US loaded salary inputs for IT roles, sourced from BLS OEWS and adjusted by a 1.3x load multiplier for benefits, payroll tax, and overhead.
Out of scope
- -Enterprise-negotiated vendor pricing. Volume commitments, custom MSAs, and sales-led tiers without a public per-unit rate are excluded.
- -Region-specific cost-of-living adjustments beyond US, UK, and EU averages. Asia-Pacific, Latin America, and Africa salary inputs are not adjusted here.
- -M&A integration cost spikes. Integration programmes can temporarily push IT spend to 8-12% of revenue for 12-24 months; this site shows the steady-state benchmark.
- -Regulated-industry compliance audit fees (SOX, PCI-DSS, HIPAA, GDPR audit costs). Mentioned qualitatively but not priced.
- -Internal change-management and adoption cost. SaaS and cloud migrations carry change-management cost that is hard to attribute across departments; excluded from the IT-budget-narrow definition.
- -GPU and AI infrastructure capex. AI infrastructure spending is shown as a growth-rate signal (+80.8% YoY) but a specific GPU-cost line item is delegated to sister sites in the AI-cost cluster.
Calculation framework
Global average 5.7% is the 2026 cross-industry, cross-size weighted mean reported in Gartner IT Spending Forecast and corroborated by Spiceworks State of IT and Flexera State of Tech Spend. Industry-vertical adjustments apply on top: financial services +1.5 to +4.5 percentage points, healthcare +0.5 to +3.5, manufacturing -3 to -1, etc. Company-size adjustments apply orthogonally (see next card).
Economies of scale drive the percentage down as headcount grows. Startup 6.9% (1-50), SMB 4-7% (51-250), mid-market 6-8% (251-1,000), enterprise 4-6% (1,001-5,000), large enterprise 3.7% (5,000+). The mid-market bump reflects governance and ITSM tooling investment that smaller firms have not yet built. Source: Gartner cross-industry benchmark.
Financial services 7-10%, technology 6-9%, healthcare 6-9%, telecom 5-8%, professional services 4-6%, retail 3-5%, energy 3-5%, manufacturing 2-5%, transport and logistics 2-4%, non-profit and education 2-4%. Industry ranges cross-reference Gartner, IDC, and Spiceworks reports; the wider range captures small-vs-large within each vertical.
Personnel 28-32%, software and SaaS 26-30%, infrastructure 20-24%, security 10-14%, support and maintenance 7-10%. These add to ~100% with the security and support categories absorbing the slack on either end. Personnel includes contractors and MSP fees; software includes SaaS subscriptions and on-premise licences; infrastructure includes cloud IaaS / PaaS plus on-premise hardware.
Of the security category, approximately 40% goes to software and platforms (EDR, SIEM, WAF, identity), 30% to personnel (security analysts, CISO, SOC or outsourced MDR), 15% to hardware (firewalls, network appliances), and 15% to outsourced services (pen-testing, incident response retainers, awareness training). Regulated industries push the total security share from 10-15% of IT to 15-18%.
Cloud now represents 45% of total IT budgets in 2026 (SaaS + IaaS + PaaS combined). SaaS is the largest sub-segment at $299B globally, IaaS at $182B, PaaS at $198B. IaaS growth is accelerating at 24.8% YoY driven by AI training and inference workloads on GPU instances; SaaS at 13%; PaaS at 20%. Source: Gartner IT Spending Forecast, February 2026 release.
Refresh cadence
The site is re-verified against named analyst and government statistics sources on the first business week of each month. The visible "Data verified" label and the dateModified field in every page's Article JSON-LD read from a single constant ( LAST_VERIFIED_DATE) so the on-page text, the schema, and the footer are always in lockstep. Cosmetic date refreshes are structurally impossible: bumping the date is a single-line change that touches every page at once.
Out-of-cycle refreshes trigger on:
- ●Gartner publishes a new IT Spending Forecast press release (Q1, Q2, Q3, Q4 cadence).
- ●Flexera, Deloitte, or Spiceworks publishes an annual State-of report with materially different segment numbers.
- ●A vertical industry shows a >2 percentage point shift in the benchmark range (e.g. cybersecurity-budget for SMBs climbed from 10.2% to 14.8% over 4 years).
- ●A new AI / cloud spending wave shifts the segment growth-rate ranking (e.g. IaaS overtaking SaaS in growth rate).
- ●US BLS releases a new OEWS occupational wage survey; staffing-cost salary inputs update.
Refreshes that move a benchmark range by less than 0.5 percentage points are batched into the next monthly pass. Refreshes that materially shift the segment narrative (for example, an IaaS growth-rate revision driven by a new GPU-supply data point) ship as soon as the change is confirmed against the named source.
Limitations
Calculator outputs and benchmark ranges are estimates. Production IT budgets depend on industry, growth stage, compliance scope, M&A activity, AI infrastructure exposure, and digital maturity factors that a percentage-of-revenue plus headcount input cannot fully capture. Always validate the output against your finance team's actual cost base before treating it as more than a sanity check.
Analyst forecasts drift between releases. Gartner's IT Spending Forecast revises segment growth rates quarterly; Deloitte's CIO Survey shifts priority rankings year to year; Spiceworks State of IT changes its panel mix between annual editions. The site reflects the most recent public-source-of-record value at the verification date; older releases may give different segment numbers.
Salary inputs in the staffing-costs page use US BLS OEWS national means with a 1.3x load multiplier. Companies operating in high-cost-of-living metros (San Francisco, New York, Boston) should apply a 1.2-1.4x metro premium on top; companies in lower-cost metros should expect a 0.85-0.95x adjustment. The formula is shown so the math is portable.
Corrections process
Spotted a stale benchmark, a recently revised Gartner segment forecast, a new BLS OEWS release we have not folded in, or an analyst-report number that disagrees with what is on this site? Email [email protected] with the page URL and the source you would like cited. Substantive corrections (percentage range changes, new analyst-report releases, BLS OEWS updates) are typically actioned within five business days. Non-substantive corrections (typo fixes, link rot, structural edits) batch into the next monthly pass.
See also the about page for the site's editorial position, disclosures, and full coverage map.