How the IHS Is Calculated The IHS is calculated based on the length of leave you’re applying for, not just the length of your course or employment. Here’s how it typically works: Visas longer than 6 months: You pay for every full year (and sometimes rounded up if part of a year is over 6 months). Dependants: Each family member must pay IHS separately — so totals can add up quickly for families. Example: A 3-year Skilled Worker visa: