Employer NI Category Letters 2026/27

For a normal category A employee, employer NI is 15% above the £5,000 annual secondary threshold. There is no upper earnings limit. This is the right starting point only if the employee does not qualify for a special employer category.

Before changing a budget, confirm the employee's circumstances, the category letter that payroll will use and the relevant eligibility evidence. It is not enough for a worker to be young or in training in everyday language: the HMRC conditions must be met. The employer NI calculator is useful for the standard annual comparison.

For eligible categories M (under 21), H (apprentice under 25) and V (qualifying veteran), employer NI is 0% up to the upper secondary threshold. In 2026/27, that threshold is £50,270 a year, £4,189 a month or £967 a week. The normal 15% rate applies above it.

For example, a qualifying apprentice under 25 paid £30,000 is within that higher threshold, so the employer NI planning estimate is £0 rather than the standard-category £3,750. At £60,000, the planning amount above £50,270 is £9,730, giving £1,459.50 at 15%. Confirm the category and status before relying on either figure.

Qualifying Freeport and Investment Zone categories use a different upper secondary threshold. For 2026/27 it is £25,000 a year, £2,083 a month or £481 a week. The employer rate can be 0% up to that limit and 15% above it. The location, job and other scheme conditions matter; the same employee cannot be treated as qualifying merely because the employer has a connection to an area.

A £30,000 qualifying Freeport or Investment Zone employee therefore has a broad planning amount of (£30,000 − £25,000) × 15% = £750. Use HMRC's current scheme guidance and payroll software for the final result.

Employer and employee category effects are not identical. Some letters alter an employee's own main NI rate, while other letters chiefly affect the employer secondary contribution. This is why a single generic statement such as 'all category letters work the same' is unsafe.

When checking a payslip, assess the employee deduction and employer cost separately. The employee NI rates guide covers the standard employee bands; the HMRC table is the source for specific reduced, deferred and pension-age categories.

Build the category check into onboarding. Record date of birth where relevant, verify apprenticeship or veteran evidence where required, check Freeport or Investment Zone eligibility, and enter the category through recognised payroll software. Review the status if the worker reaches a relevant age or a scheme condition changes.

Keep the evidence and decision record. A reduced employer NI estimate is only useful if it reflects an eligible category; the cost of correcting an incorrect letter later is higher than confirming it at the start.

The standard 15% employer NI rule is not universal. Qualifying under-21, apprentice and veteran categories can receive 0% employer NI up to £50,270; qualifying Freeport and Investment Zone categories can receive 0% up to £25,000. Use the official table and payroll evidence, then model the broader hire cost with the employee cost calculator.