Time Off in Lieu (TOIL) Calculator

About Time Off in Lieu (TOIL) Calculator

How TOIL Accrual Works

The core calculation is straightforward: TOIL earned = overtime hours x accrual rate. The accrual rate depends on your employer's policy and often varies by when the overtime happens:

Overtime Type	Common Rate	Example (4h overtime)
Standard weekday	1:1	4 hours TOIL
Evening or early morning	1.25:1	5 hours TOIL
Saturdays	1.5:1	6 hours TOIL
Sundays and bank holidays	2:1	8 hours TOIL

So if you work a 4-hour Saturday shift at 1.5:1, you earn 6 hours of time off. That's nearly a full day back for half a day's overtime. The enhanced rates incentivise employees to cover less desirable shifts while giving fair compensation.

TOIL vs Overtime Pay - Which Is Better?

The choice between TOIL and paid overtime depends on your priorities. Overtime pay puts extra money in your pocket immediately, typically at 1.5x or 2x your hourly rate. TOIL gives you time instead of money, which many people value more highly for work-life balance.

This calculator includes a comparison section that shows what your overtime would be worth in pay versus the time off you're earning. If you earn 18 an hour and work 10 hours of overtime at 1.5:1, the pay equivalent would be 270 while the TOIL equivalent is 15 hours (two full working days) of paid leave.

According to a 2024 CIPD survey, 38% of UK employees said they would prefer time off over additional pay for overtime worked. For employees already in higher tax brackets, TOIL can be more tax-efficient since time off doesn't push earnings into a higher band for that pay period.

UK Rules Around TOIL

There's no specific UK legislation governing TOIL. The Working Time Regulations 1998 set a maximum 48-hour average working week (which employees can opt out of) and require minimum rest periods, but they don't mandate how overtime is compensated. Key legal points:

• TOIL arrangements should be clearly documented in your employment contract or company handbook
• Your total pay divided by total hours (including overtime) must not drop below National Minimum Wage (12.71 per hour for ages 21+ from April 2026)
• TOIL doesn't replace your statutory holiday entitlement of 28 days (including bank holidays) per year
• If you leave your job with unused TOIL, whether it's paid out depends on your contract - get this in writing

For tracking your standard contracted hours and calculating overtime, the overtime hours calculator handles weekly timesheets with automatic overtime detection. If you need to count working days for planning when to take your TOIL, the work days calculator excludes weekends and bank holidays.

Tips for Managing TOIL Effectively

Keep a running record of every overtime session with dates and hours, not just a total. This protects you if there's ever a dispute and makes it easier to request your time off. Many employers set expiry windows of 3 to 6 months, so plan to use your TOIL before it lapses.

When possible, agree the accrual rate before working overtime rather than after. Some employers default to 1:1 but will offer enhanced rates for bank holidays or unsocial hours if asked upfront. If your employer offers both TOIL and paid overtime, consider your current financial needs versus your desire for time off before committing.

For converting between hourly, weekly, and annual pay to understand the true value of your TOIL balance, the hourly to salary converter can help you see the bigger picture. The monetary value shown in this calculator uses your hourly rate multiplied by the accrual rate, giving you a direct comparison with what overtime pay would have been.

UK Working Time Regulations and TOIL

The Working Time Regulations 1998 set the legal framework around working hours in the UK, and they interact with TOIL in several important ways. Even though TOIL itself is not specifically regulated, the hours you work to earn it are.

Regulation	Requirement	How It Affects TOIL
48-hour weekly limit	Average of 48 hours per week over a 17-week reference period	Regular overtime to earn TOIL can push you over this limit. Your employer must monitor this unless you have signed an opt-out.
Daily rest	11 consecutive hours between working days	If overtime extends your day, you are still entitled to 11 hours off before the next shift. TOIL does not override rest periods.
Weekly rest	24 uninterrupted hours off per week (or 48 hours per fortnight)	Working weekends to earn TOIL must still respect weekly rest entitlements.
Rest breaks	20-minute break if working more than 6 hours	Overtime shifts exceeding 6 hours must include a break, even if the hours are being banked as TOIL.
Annual leave	28 days (5.6 weeks) including bank holidays	TOIL is separate from statutory holiday. Employers cannot count TOIL taken as part of your 28-day entitlement.

The opt-out from the 48-hour limit is voluntary and must be in writing. You can cancel it at any time with notice (usually 7 days to 3 months depending on your contract). According to the Office for National Statistics, about 3.3 million workers in the UK regularly work more than 48 hours per week, many of whom have signed opt-outs.

Worked Examples: TOIL Accrual at Different Rates

To show how different accrual rates change the value of your TOIL balance, here is what happens when you work a mix of overtime across a typical month. Assume you earn £18 per hour on a standard 37.5-hour week.

Date	Overtime Type	Hours Worked	Accrual Rate	TOIL Earned	Pay Equivalent
3 March	Weekday evening	2.0h	1:1	2.0h	£36.00
8 March	Saturday	5.0h	1.5:1	7.5h	£135.00
15 March	Weekday evening	3.0h	1:1	3.0h	£54.00
22 March	Sunday	4.0h	2:1	8.0h	£144.00
Monthly Total		14.0h		20.5h	£369.00

Those 14 hours of actual overtime produced 20.5 hours of TOIL - nearly three full working days off. If you had been paid overtime at time-and-a-half instead, the same 14 hours would have earned you £378 (14 x £18 x 1.5). In this case, the monetary values are close, but TOIL gives you almost three days of freedom instead of money. The right choice depends on what you need more: time or cash.

Common TOIL Policies and What to Watch For

Employers structure TOIL policies differently. Here are the most common approaches and the things that catch people out:

• Use-it-or-lose-it with a deadline. Many employers require TOIL to be taken within 3 or 6 months of earning it. If you are consistently too busy to take your TOIL, this policy quietly erodes your balance. Keep a diary of your TOIL dates and set calendar reminders a month before expiry.
• Manager approval required. Some policies require prior approval before working overtime, and again before taking TOIL. If you work overtime without pre-approval, it may not count. Always get the green light in writing - even a quick email or Slack message is enough.
• Maximum balance cap. A cap of 37.5 or 40 hours is common. Once you hit it, additional overtime does not accrue TOIL. This stops the balance from growing indefinitely and encourages regular use.
• Payout on leaving. Check your contract or handbook for what happens to unused TOIL if you resign or are made redundant. Some employers pay it out at your standard rate, others at the enhanced accrual rate, and some treat it as forfeited. Get clarity on this before you build up a large balance.
• Minimum block sizes. Some policies require TOIL to be taken in minimum blocks (half days or full days), not individual hours. This can be awkward if you have 3.5 hours of TOIL and need to use a full 7.5-hour day to take it.

If your employment contract does not mention TOIL at all but your manager offers it informally, ask for the terms in writing. Informal arrangements have no legal standing and can be changed or denied without notice. ACAS (the Advisory, Conciliation and Arbitration Service) recommends that any TOIL agreement should specify the accrual rate, the maximum balance, the expiry period, and what happens to unused TOIL on termination. Having these four points in writing prevents almost all common disputes.

How to Track TOIL Accurately

The biggest source of TOIL disputes is poor record-keeping. Here is a practical approach that protects both you and your employer:

• Log overtime the same day. Record the date, start time, end time, and the reason for the overtime. Trying to reconstruct this a week later from memory leads to inaccurate claims and rejected requests.
• Get sign-off promptly. Send your overtime log to your manager within 48 hours for approval. This creates a paper trail and avoids month-end surprises where hours are disputed.
• Track TOIL taken separately from annual leave. TOIL and holiday leave are different entitlements. Mixing them up in a shared tracker leads to confusion about how much of each you have left. Use separate categories or columns in whatever system you use.
• Reconcile monthly. At the end of each month, check your running balance against your manager's records. Small discrepancies caught early are easy to fix; large ones discovered at year-end are not.

This calculator handles the maths side - enter each overtime session as it happens, note any TOIL taken, and the running balance stays current. For tracking your standard working hours week by week, the hours calculator works well alongside this tool. And if you need to count how many working days your TOIL balance translates to, the work days calculator gives you an exact figure accounting for weekends and bank holidays.

Sources

• UK Working Time Regulations 1998 - legislation.gov.uk
• GOV.UK - National Minimum Wage and Living Wage rates
• GOV.UK - Maximum weekly working hours
• GOV.UK - Holiday entitlement
• ACAS - Time off in lieu guidance
• ONS - Earnings and working hours statistics
• CIPD - Employee outlook and working time research