Replace your staff holiday spreadsheet with a dedicated leave tracker. The cheapest UK options cost around £1 per user per month, fix the GDPR risk of sharing personal data in Excel files, give staff a self-service way to request leave, and update allowances automatically. Setup typically takes under 30 minutes.
Why spreadsheets break down
For a team of three or four, a spreadsheet feels fine. You add a row per person, mark the days off in colour, and update a balance at the bottom. Job done.
The trouble starts almost immediately. Someone requests leave by email, you forget to update the sheet. A formula breaks when you insert a row. You realise two team members are off the same week and you have no cover. A part-timer joins and you can't figure out the pro-rata. You email the file to your colleague and now there are two versions in the wild.
None of these are catastrophic on their own. They just keep happening, every week, and absorb hours of admin time.
Side by side: spreadsheet vs. modern tracker
Here's the same team's leave for one week in May, shown two ways. Same data, different system. The spreadsheet on the left is a real-world snapshot, formula errors and all. The wallchart on the right is the same week in Book Time Off.
| A | B | C | D | E | F | G | |
|---|---|---|---|---|---|---|---|
| 1 | Name | Mon 4 | Tue 5 | Wed 6 | Thu 7 | Fri 8 | Bal |
| 2 | Sarah | BH | H | H | 23 | ||
| 3 | Marcus | BH | H? | 20 | |||
| 4 | Priya | BH | H | #REF! | |||
| 5 | Tom (PT) | BH | H | 9.6 | |||
| 6 | James | BH | #N/A |
The point isn't that spreadsheets are bad. They're useful for plenty of things. They're just the wrong shape of tool for this particular job - one where you need a single up-to-date view, multiple people interacting with the data, and a clear audit trail.
The hidden costs of Excel
Spreadsheets feel free, but they carry real costs that show up over time:
Your options for replacing the spreadsheet
The UK leave management market is well-served. There are about a dozen credible options at the small-business end, with prices ranging from free to around £4 per user per month. Here are the ones worth considering, with what each does best:
| Tool | Price | Best for |
|---|---|---|
| Book Time Off | £1/user/month | SMEs that want a focused leave tracker - calendar, wallchart, custom allowances, one-click email approvals, UK bank holidays auto-loaded. 30-day free trial, no card. |
| Timetastic | £1.30/user/month | The market leader. Polished interface, Slack integration, mobile app. The product everyone else compares themselves to. |
| Leave Dates | From £1/user/month | Strong free tier for very small teams. Simple click-and-drag booking interface. |
| CharlieHR | From £4/user/month | Wider HR feature set - people directory, onboarding, surveys. Worth it if you need more than just leave. |
| BreatheHR | From £18/month total | Full SME HR platform. Strong on documents, performance reviews, and onboarding alongside leave. |
| Vacation Tracker | From $1/user/month | Built around Slack and Microsoft Teams - request and approve leave entirely inside chat. |
For most UK SMEs that just want to stop using a spreadsheet, the right answer is one of the dedicated leave tools (Book Time Off, Timetastic, Leave Dates). Full HR suites are over-engineered for the job and cost three to four times as much. Pure leave tools do one thing well, cost a tenner a month for a team of ten, and let you spend the saved budget elsewhere.
What to look for in a leave tracker
Whichever tool you pick, these are the features that actually matter day to day. Anything missing here is a red flag:
- Shared calendar or wallchart view - one screen showing the whole team for the month or year
- Custom annual allowances per person - because not everyone gets the same
- Days used and remaining at a glance - no formulas, no "let me check"
- UK bank holidays auto-loaded - ideally from the official GOV.UK feed, refreshed every year, with E&W / Scotland / NI options (see our full list of UK bank holidays for 2026 and 2027)
- One-click email approvals - so a manager can approve from their phone without logging in
- Half-day bookings - because dentist appointments exist
- Departments with capacity limits - "no more than two people from sales off at once"
- CSV exports - for payroll, end-of-year reporting, or migration to another tool later
- Mobile-friendly for staff - so they can check their balance and book without nagging HR
How to migrate in 30 minutes
Switching from a spreadsheet feels like a project. It isn't. Most teams of 10 to 20 people are up and running inside half an hour:
Sources
| Source | What it covers |
|---|---|
| GOV.UK - Holiday entitlement | The 5.6-week statutory minimum and how to calculate leave for different working patterns. |
| ACAS - Checking holiday entitlement | Practical guidance on bank holidays, pro-rata, and rounding rules. |
| ICO - Guide to data security | What "appropriate technical and organisational measures" means for HR data. |
| ICO - Employment practices and data protection | How UK GDPR applies to staff personal data, including absence records. |
| GOV.UK - 2024 holiday reforms | The 12.07% accrual method for irregular hours and part-year workers. |
Frequently asked questions
The questions UK employers ask most often when switching from a spreadsheet to a dedicated tracker.
Are spreadsheets GDPR compliant for tracking staff holidays?
Spreadsheets are difficult to make GDPR-compliant for HR data. They lack proper access controls, audit trails, and secure deletion. While not strictly illegal, the ICO expects employers to use appropriate technical measures to protect personal data - and a shared Excel file emailed between managers rarely meets that bar.
What are the main problems with using Excel to track staff holidays?
The main issues are: manual leave balance updates create errors, no central source of truth for who is off when, no built-in approval workflow, GDPR risk from sharing files containing personal data, broken formulas as the team grows, no mobile access for staff, and difficulty handling part-time, mid-year starters, and bank holiday rules correctly.
How much does leave management software cost in the UK?
Most UK leave management tools cost between £1 and £4 per user per month. Book Time Off is £1 per user per month with no minimum. Timetastic is £1.30. BreatheHR's smallest plan is around £18 per month total. CharlieHR starts at £4 per person. All offer free trials so you can compare without commitment.
Will switching from a spreadsheet take a long time to set up?
No. Most modern leave tools let you import your existing data via CSV in a few minutes. Book Time Off can also import directly from Timetastic. The full setup - adding the team, setting allowances, choosing the bank holiday region - usually takes under 30 minutes for a team of 10 to 20 people.
What features should I look for in a staff holiday tracker?
At a minimum: a shared calendar or wallchart view, custom allowances per person, automatic UK bank holidays, one-click approvals (ideally from email), half-day bookings, departments with capacity limits, CSV exports for payroll, and mobile access for staff. Anything more (performance reviews, payroll integration, time tracking) is bonus and usually means paying more for features you won't use.