NHS MARS Calculator (Illustrative)
Use this calculator to estimate a potential Mutually Agreed Resignation Scheme (MARS) payment. It is a planning tool only and does not replace the formal figure from your NHS employer.
Note: NHS MARS terms vary by trust, role, and local policy. Always confirm final numbers with HR and payroll.
What is NHS MARS?
NHS MARS typically refers to a Mutually Agreed Resignation Scheme, where an employee and employer agree to end employment in return for a compensation payment. It is different from standard resignation because a financial package is negotiated under a formal process, and it is different from compulsory redundancy because participation is usually voluntary and conditional.
People often search for an NHS severance calculator, NHS exit payment estimate, or MARS payout calculator because they want a quick way to understand likely figures before discussions with HR. That is exactly what this page is designed to help with.
How this NHS MARS calculator works
This tool uses a practical estimation model:
- Convert annual salary to monthly salary.
- Multiply years of service by a payment factor (months per year).
- Apply a cap on maximum payable months.
- Estimate tax on any amount above the tax-free allowance.
Because NHS organisations may use different local formulas and approval rules, the output is a planning estimate rather than a contractual value.
Simple formula used
Gross MARS Payment = Monthly Salary × min(Years of Service × Factor, Max Months)
Taxable Amount = max(0, Gross Payment − Tax-Free Allowance)
Estimated Net = Gross Payment − (Taxable Amount × Estimated Tax Rate)
Why a calculator is useful before HR discussions
Before entering formal conversations, it helps to know your likely range. A quick estimate can help you:
- Compare staying versus leaving financially.
- Plan your emergency fund and cash runway.
- Assess pension timing and retirement options.
- Understand how tax may reduce take-home proceeds.
Documents to gather first
For better accuracy, collect these items before using any NHS MARS calculator:
- Most recent payslip (for pensionable and non-pensionable earnings).
- Contract details and continuous NHS service dates.
- Any local MARS policy document from your trust.
- Written HR guidance on caps, exclusions, and tax treatment.
- Pension statement (NHS Pension Scheme) and retirement age projections.
Common NHS MARS questions
Is MARS the same as redundancy?
Not always. Redundancy usually follows a role reduction process with specific statutory and policy frameworks. MARS is commonly a mutually agreed exit arrangement that may use different eligibility criteria and payment methods.
Is the payment fully tax free?
Usually not. In many cases, only part of the payment may be tax free up to a limit, with the remainder taxed. The calculator includes a tax-free allowance field so you can model different scenarios.
Does pension status affect MARS?
It can. Pensionable service, age, and whether benefits are taken now or later can materially change your long-term outcome. A larger lump sum is not always better if pension consequences are significant.
Can I negotiate the figure?
Some scheme terms are fixed, while others may allow case-by-case discretion. Always ask for the written basis of calculation and confirm whether all elements of service and pay have been counted correctly.
Practical scenario planning tips
Run at least three scenarios in the calculator:
- Conservative: lower factor, lower service recognition, higher effective tax.
- Expected: likely factor and service years from HR draft figures.
- Optimistic: full service counted and maximum policy cap available.
This approach gives you a range rather than a single point estimate, which is usually more realistic for real-world NHS exit planning.
Important limitations and disclaimer
This page provides educational information and should not be treated as financial, tax, legal, or employment advice. NHS trusts may interpret policy differently, and your personal tax position depends on your full annual income and HMRC treatment.
Before making a decision, request a formal written offer, review all conditions, and consider speaking with an independent adviser.
Final thoughts
An NHS MARS decision is both financial and personal. A calculator gives clarity, but your final choice should also consider job security, pension impact, wellbeing, and future opportunities. Use this tool to prepare smart questions, not to replace official figures.