Assumptions and pay data
Pay data: HMPPS pay (Prison & Probation). Prison Band 2: one rate of £25,409, 2026/27 figures. Checked 4/9/2026.
- The London options, £4,440 inner, £2,090 outer and £950 fringe, are rounded illustrations, not HMPPS rates.
- RHA is paid to some operational managers; if it is on your payslip, set the percentage from your own pay.
Allowances & Enhancements Calculator
England & WalesHMPPSReviewed 4/9/2026
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Guide for Operational Support Grade
This guide explains how allowances and enhancements sit on top of basic pay for Operational Support Grade on Prison Band 2 at Probation & Prisons. Select only enhancements that apply to your rota, location and contract.
Enhancements for Operational Support Grade
As Operational Support Grade at Probation & Prisons, total pay often includes enhancements on top of basic band pay on Prison Band 2. Eligibility depends on your rota, location and contract. The calculator adds selected allowances to illustrative basic pay from HMPPS pay (Prison & Probation).
Stacking rules
Employers have rules on which allowances can be combined. This tool adds selected items to your base pay for illustration. Use your band and spine point, or enter your payslip gross as the base.
Example scenario
Example: £25,409 base pay plus an illustrative 5% add-on (£1,270), £26,679 in all. The calculator itself opens with no allowances added.
| Base band pay (example) | £25,409 |
|---|---|
| Illustrative allowance add-on (5%) | £1,270 |
| Total gross (example) | £26,679 |
Frequently asked questions
What should I put in the boxes?
The payments on your payslip as a share of basic pay. Last year's payslips are the best guide.
Do you store my inputs?
Your calculator inputs and results stay in your browser and are not stored. We only collect your name and email if you choose to give them, for example to download your results or sign up for email updates. We store them with MailerLite, our email provider, along with the page you were on. See our privacy policy.
About this role
What is an Operational Support Grade?
An Operational Support Grade (OSG) supports the daily running of a prison: gate and visits, escorts, stores, control room support and other non-officer operational tasks. Entry is via HM Prison and Probation Service (HMPPS). Pay is Fair and Sustainable Prison Band 2 (National OSG spot rate).
Typical demands, progression and balance
OSG roles are a common route into HMPPS. Many staff progress to Prison Officer after gaining experience.
What allowances or extras apply?
Allowances and enhancements vary by employer and role. Use the calculator above to add common allowances to your base pay.
Disclaimer
Illustrative estimates, not financial or career advice. Your payslip and contract decide what you are actually paid.