The cost for Life Assurance in Ireland depends on your current employees salaries. As so, Kota recalculates every month the due amount for this benefit by checking if there were any new joiners, leavers, or base salary changes.
Here's an example for an employer who has opted to have Life Assurance cover for 4 times their employees salaries, and their unit cost per mille is 1.51. Let's look at their invoice amounts for two different months:
January
10 employees
Total salaries: €500,000
Insured amount: €500,000 * 4 = €2,000,000
Invoice amount: (€2,000,000 / 1000) * 1.51 = €3,020 p/year, which makes €251.67 p/month
February (one employee left the company)
9 employees
Total salaries: €450,000
Insured amount: €450,000 * 4 = €1,800,000
Invoice amount: (€1,800,000 / 1000) * 1.51 = €2,718 p/year, which makes €226.50 p/month