Glossary

Class 1A National Insurance

Class 1A National Insurance is the employer's NI on taxable benefits in kind — the reason a perk costs the company more than its face value.

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On benefitsin kind

Employerpays

Definition

Class 1A National Insurance is the employer's NI charge on most taxable benefits in kind — company cars, private medical cover and similar — paid annually alongside P11D reporting.

In plain terms

When you give staff perks rather than cash, the company pays Class 1A NI on their value. It is why a benefit costs the business more than its face value.

Why it matters for your company

Class 1A NI makes benefits in kind more expensive than they look, so weigh perks against a simple pay rise. It is reported and paid after the tax year, so budget for it — part of the true cost of employment.