As the leave year draws to a close, many NHS staff face the same question: what happens to the annual leave I haven't used? Whether it's because staffing pressures made it impossible to book time off, or you simply didn't get round to it, losing hard-earned leave days feels wrong. And increasingly, NHS workers are asking another question: can I buy extra leave days?
This guide covers both topics in detail — carry-over rules under Agenda for Change, what your trust may offer on top, and the growing trend of annual leave purchase schemes across the NHS.
Carrying over unused annual leave
Under Agenda for Change, there is no single national rule specifying exactly how many days you can carry over. Instead, the NHS Terms and Conditions of Service Handbook states that annual leave should normally be taken within the leave year in which it accrues. However, it also acknowledges that carry-over may be necessary and leaves the specifics to individual trusts.
What most trusts allow
In practice, the majority of NHS trusts allow staff to carry over a limited amount of leave — typically between 5 and 10 days (or the equivalent in hours). This carry-over usually requires manager approval and should be agreed before the end of the leave year.
Some trusts are more generous, particularly where staffing pressures have prevented staff from taking their full entitlement. During and after the COVID-19 pandemic, many trusts introduced temporary provisions allowing significantly larger carry-overs, and some have made these permanent.
Your statutory right to carry-over
Even without trust-level policies, UK employment law provides a safety net. Under the Working Time Regulations 1998 (as amended following the Sash Window Workshop v King ruling), if your employer has prevented you from taking leave — for example, by refusing requests due to staffing needs — you have the right to carry over your statutory minimum of 20 days (the EU-derived portion of your entitlement).
This means if you can demonstrate that you requested leave and it was refused, your employer cannot then forfeit those days at year-end. Keep records of any refused leave requests as evidence.
What happens to leave you can't carry over
If you exceed your trust's carry-over limit and can't negotiate an exception, the excess days are typically forfeited. You don't receive payment for them. This is why it's so important to plan your leave throughout the year rather than leaving it all to the final months.
A proactive approach
The best way to avoid losing leave is to book it early. Many experienced NHS staff recommend blocking out key dates at the start of the leave year — before the diary fills up with colleagues' requests. Even provisional bookings can help secure your preferred dates.
Buying extra annual leave
An increasing number of NHS trusts now offer annual leave purchase schemes (sometimes called 'buy additional leave' or 'salary sacrifice leave' schemes). These allow you to buy extra days of leave by taking a proportional reduction in your salary.
How purchase schemes typically work
The mechanics are straightforward. You agree to buy a set number of extra days (usually between 1 and 10), and the cost is deducted from your salary, spread evenly across the year:
- Cost per day = your annual salary ÷ 260 (working days in a year)
- Monthly deduction = (cost per day × number of extra days) ÷ 12
For example, if your annual salary is £29,970 (Band 5, Point 1), each additional day costs approximately £115.27. Buying 5 extra days would reduce your monthly salary by about £48.03 before tax.
Tax efficiency
Because the salary deduction is made before tax and National Insurance are calculated (in most schemes), the real cost to you is less than the gross figure. A basic rate taxpayer effectively gets a discount of about 28% (20% income tax + 8% NI) on the cost of each extra day.
Using the example above, the £48.03 monthly gross deduction would reduce your take-home pay by approximately £34.58 after tax savings. That's roughly £7 per extra day of leave — remarkably good value.
Impact on pension
Be aware that salary sacrifice can affect your pensionable pay. If the extra leave reduces your salary below a pension tier boundary, your pension contribution rate might change. In most cases, the impact is minimal, but it's worth checking with your trust's payroll team.
Does your trust offer a purchase scheme?
Not all trusts offer leave purchase schemes, and those that do may have different rules about eligibility, application windows, and the maximum number of days you can buy. Typically:
- Application window: Once a year, usually 2–3 months before the new leave year starts
- Eligible staff: Permanent staff who've passed probation (bank and agency staff are usually excluded)
- Maximum purchase: Between 5 and 10 days, depending on the trust
- Manager approval: Required, as extra leave must be manageable within your team's staffing
Check your trust's intranet, HR newsletter, or ask your line manager whether a scheme is available. If your trust doesn't offer one, you could raise it through your staff-side representatives — many trusts have introduced schemes following staff feedback.
Selling annual leave
A small number of NHS trusts also allow staff to sell unused annual leave back in exchange for additional pay. This is less common than buying leave and is sometimes only available in specific circumstances (for example, when you have excess carried-over leave from a previous year).
The financial mechanics are the reverse of buying: you sacrifice leave days and receive additional pay. However, this is less tax-efficient than buying leave, because the extra pay is taxed at your marginal rate.
Combining carry-over with other strategies
Smart leave management combines several approaches:
- Book early: Secure your preferred dates before colleagues fill the diary
- Use bank holidays strategically: If a bank holiday falls mid-week, booking the surrounding days can create a long break for minimal leave cost
- Consider term-time patterns: If you don't have school-age children, booking outside school holidays gives you quieter (and cheaper) destinations
- Buy extra days if available: The tax efficiency makes purchased leave excellent value
- Carry over deliberately: If your trust allows 5 days carry-over, plan to carry exactly 5 days and use them early in the new year
For more strategies, read our guide on how to maximise your NHS annual leave.
Calculate and plan
Start by understanding exactly how much leave you're entitled to. Use our free Annual Leave Calculator to calculate your full entitlement, then plan backwards from the end of your leave year. If you know you'll have days left over, explore carry-over options with your manager early — don't wait until March.
For a broader view of how leave fits into your total NHS benefits package, explore our NHS Pay Calculator and Salary Comparison Tool. Understanding the full picture — pay, pension, leave — helps you make smarter decisions about your career and work-life balance.