Holiday Pro Rata Calculator

Holiday Pro Rata Calculator

Full Year (12 months) 11 Months 10 Months 9 Months 8 Months 7 Months 6 Months 5 Months 4 Months 3 Months 2 Months 1 Month

function calculateHolidayProRata() { var allowance = parseFloat(document.getElementById('fullTimeAllowance').value); var daysWeek = parseFloat(document.getElementById('daysWeek').value); var months = parseFloat(document.getElementById('monthsWorked').value); if (isNaN(allowance) || isNaN(daysWeek) || allowance <= 0 || daysWeek 7) { alert("Days worked per week cannot exceed 7."); return; } // Calculation Logic: // 1. Calculate the part-time ratio (Days per week / 5 standard full-time days) // 2. Calculate the time-period ratio (Months worked / 12) // 3. Multiply by full-time allowance var partTimeRatio = daysWeek / 5; var yearRatio = months / 12; var proRataEntitlement = allowance * partTimeRatio * yearRatio; // Round to 1 decimal place var finalResult = Math.round(proRataEntitlement * 10) / 10; document.getElementById('holidayResult').innerText = finalResult + " Days"; document.getElementById('resultBreakdown').innerText = "Based on working " + daysWeek + " days per week for " + months + " months of the year."; document.getElementById('resultContainer').style.display = "block"; }

What is Pro Rata Holiday?

Pro rata holiday is the amount of vacation time an employee is entitled to, proportionate to the number of hours or days they work compared to a full-time employee. The term "pro rata" is Latin for "in proportion." This ensures that part-time staff or those starting/leaving mid-year receive a fair and legal amount of paid leave.

How to Calculate Your Pro Rata Entitlement

Calculating your entitlement manually involves two primary factors: your working pattern and your length of service within the current holiday year. The standard formula used by our calculator is:

(Full-time Allowance × (Days Worked Per Week ÷ 5)) × (Months Employed ÷ 12)

Example 1: Part-Time Employee

If a full-time employee gets 28 days of holiday and you work 3 days a week for the full year:

• Full-time allowance: 28 days
• Ratio: 3 / 5 = 0.6
• Result: 28 × 0.6 = 16.8 days

Example 2: New Starter Mid-Year

If you work full-time (5 days) but only start 6 months into the holiday year:

• Full-time allowance: 28 days
• Time ratio: 6 / 12 = 0.5
• Result: 28 × 0.5 = 14 days

Bank Holidays and Pro Rata

In many regions, statutory holiday includes bank holidays. For part-time workers, bank holiday entitlement must also be pro-rated. This avoids a situation where a part-time worker who works on Mondays benefits from more paid leave than a worker who works on Tuesdays, simply because most bank holidays fall on Mondays.

Rounding Rules

While employers can round holiday entitlement up, they are legally not allowed to round it down. For example, if a calculation results in 16.2 days, an employer might round it to 16.5 or 17 days, but they cannot round it down to 16 days as this would provide less than the statutory minimum.

Important Legal Considerations

• Statutory Minimum: In the UK, the statutory minimum is 5.6 weeks of paid holiday.
• Accrual: Many employers use an "accrual" system where you earn holiday as you work (usually 1/12th of the annual amount each month).
• Rollover: Check your employment contract to see if you can carry over unused pro rata holiday to the next year.