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100% REMOTE JOB: Senior Mainframe Security Analyst (RACF) - Must have - (Audit A...
Posted Today by Prohires
100% REMOTE JOB: Senior Mainframe Security Analyst (RACF) - Must have - (Audit Assessment expertise).Work Location: 100%...
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Mainframe Developer Contractor Day Rate Benchmarks and National Landscape
Live market telemetry, compensation quartiles, and IR35 compliance benchmarks across the UK contract sector.
Median Daily Rate
£570/day
+34.1%
Interquartile Range
£520/day – £570/day
Middle 50% market distribution
Contract Engagement Split
66% Outside IR35
6% Inside IR35 engagements
Market Conditions and Compensation Trajectory
Statutory engagement conditions for Mainframe Developer specialists across the UK continue to exhibit structural stability, providing well-defined engagement boundaries for independent practitioners. Compliance tracking confirms that 66% of active roles are determined outside the scope of IR35, enabling independent consultants to provide services via compliant limited company vehicles. Gross daily remuneration anchors around a national midpoint of £570/day, with quartiles from £520/day to £570/day. Upper-quartile assignments place substantial value on contractors with verified competency across IT and cloud infrastructure. Figures summarise advertised pay on this hub to November 2026 and are market statistics, not a personal offer or guaranteed assignment rate.
Daily Rate Quartiles and Market Benchmarks
Values combine advertised day rates, stated IR35 outcomes, and sector labels from vacancies matching this hub. Quartiles use priced roles only.
| Metric | Value | What it shows |
|---|---|---|
| Median day rate | £570/day | Mid-market advertised pay for this hub |
| 25th percentile (P25) | £520/day | Lower-quartile priced vacancies |
| 75th percentile (P75) | £570/day | Upper-quartile priced vacancies |
| Outside IR35 share | 66% | Stated limited-company / outside SDS |
| Inside IR35 share | 6% | Stated PAYE / umbrella / inside SDS |
| Undetermined IR35 | 28% | Adverts that omit a published status |
| Leading sector | IT (99%) | Largest hiring cluster in the sample |
| Priced sample | 7 roles | Vacancies used for the rate corridor |
| Regional rate band | UK-wide rate parity | Location pricing context, not an SDS |
Statutory Standards and Frequently Asked Questions
Off-payroll working rules still sit with the end client for medium and large private-sector hirers of Mainframe Developer contractors nationwide. A Status Determination Statement should precede start date, and PAYE or umbrella treatment usually follows an inside finding. Outside IR35 work is invoiced to a limited company and tax planning stays with the limited company. Regional pay still follows UK-wide rate parity. Use HMRC guidance and, where needed, a status review rather than the vacancy wording alone. Filter the board above by IR35 to see how the mix lands in IT.
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