De minimis state aid and Employment Allowance
For some businesses, the Employment Allowance is not simply a National Insurance relief: it counts as de minimis state aid, a category of government support that carries its own ceiling of as little as 20,000 euros over three years [1]. A business that exceeds its sector ceiling cannot claim the allowance at all, even though it would otherwise be eligible [1].
The rule reaches far fewer employers than it once did. De minimis state aid limits are now likely to apply only where a business is located in Northern Ireland and makes or sells goods or wholesale electricity [1]. For most of the 1,418,000 employers who claimed the allowance in the 2025 to 2026 tax year, the state aid question does not arise, but for those it does affect, getting the calculation right is a condition of claiming [2].
This guide explains what de minimis state aid means, when the Employment Allowance falls within it, the sector ceilings that apply, how to work out whether a business is below its limit, and how connected companies share a single ceiling. It addresses employers and their agents and reflects the rules for the 2026-27 tax year.
Key takeaways
- Employment Allowance counts as de minimis state aid for some businesses, and those businesses cannot claim if they exceed their sector ceiling over three years [1].
- De minimis limits are likely to apply only where a business is located in Northern Ireland and makes or sells goods or wholesale electricity [1].
- The ceilings are set in euros and vary by sector, from 20,000 euros for agriculture to 200,000 euros for industrial or other businesses [1].
- A business must add the allowance to the state aid it received in the claim year and the two years before, then check the total against its sector ceiling [1].
- Connected companies share a single de minimis ceiling: the total across the group must stay below the limit [1].
What de minimis state aid means
De minimis state aid is a category of financial support from government that is considered small enough not to distort competition, and so is subject to a capped limit rather than a full approval process [1]. The Employment Allowance was brought within this framework from April 2020, meaning that for affected businesses it counts towards the total de minimis aid they are allowed to receive over a rolling period [3].
The practical effect is a ceiling. There is a limit to how much de minimis state aid an affected business can receive over a three-year period, and if it exceeds that limit, it cannot claim the Employment Allowance [1]. This is different from ordinary eligibility. A business can be a company, employ staff, and have an employer National Insurance bill, yet still be barred from the allowance because its state aid ceiling is already full [1].
Because the allowance itself is worth up to £10,500 for the 2026-27 tax year, it is a meaningful amount of aid to count against a ceiling, particularly for businesses in the lower-limit sectors [4]. Recording state aid accurately therefore becomes part of the payroll compliance picture for affected employers, which is one reason many use HMRC-recognised payroll software that keeps the allowance figure clearly visible. The allowance offsets the same employer Class 1 liability explained in this overview of employer National Insurance, so the state aid ceiling effectively caps how much of that liability the relief can remove.
When the allowance falls within the rules
The scope of the de minimis rule narrowed considerably. De minimis state aid limits are likely to apply to a business only if both of two conditions are true: the business is located in Northern Ireland, and the business makes or sells goods or wholesale electricity [1]. Where both apply, the business must work out how much state aid it has received in total and check that it was below the limit, and it must do this even if it does not make a profit [1].
This reflects the arrangements for Northern Ireland goods, where certain subsidy rules continue to operate. A business in Great Britain that provides services, or a Northern Ireland business that does not deal in goods or wholesale electricity, is generally outside the de minimis state aid question for the Employment Allowance [1]. The narrowing means the state aid declaration is now a minority concern rather than a universal one [3].
The declaration also surfaces when claiming for earlier years. When claiming for a previous tax year through payroll software, an employer must answer whether state aid rules apply, and if they do, select the business sectors that apply, even where the business does not make a profit [5]. Most businesses that have to select a sector choose the industrial or other category, which covers examples such as a hair salon or a restaurant [5]. An employer for whom the rules do not apply simply answers No to the state aid question [5].
The sector ceilings
The de minimis ceiling depends on the business sector, and it is worked out in euros [1]. The four ceilings are set out below, each measured over a three-year period.
| Sector | De minimis state aid limit over 3 years |
|---|---|
| Agriculture products | 20,000 euros [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
| Fisheries and aquaculture | 30,000 euros [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
| Road freight transport | 100,000 euros [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
| Industrial or other | 200,000 euros [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
The spread is wide. A primary agricultural producer has a ceiling one tenth the size of an industrial business, so the Employment Allowance consumes a far larger share of the agricultural limit [1]. A business that operates across more than one sector faces different rules again, and should consult HMRC's further guidance to work out how the ceilings combine [6]. Agents advising affected clients typically track each client's sector and running aid total through a payroll bureau platform so no ceiling is breached across a group.
Working out whether a business is below the limit
The calculation is a running total, not a single-year test. A business first checks whether it has received any de minimis state aid, which it should have been told about in writing [1]. It then adds together the total de minimis aid received for the tax year it is claiming for and the two tax years before that [1].
Next, the business adds the full amount of the Employment Allowance for the year it is claiming to that running total, and converts the figure into euros using the exchange rate from 30 March of the previous tax year [1]. If the resulting total is below the ceiling for the sector, the business is eligible to claim [1]. The steps are summarised below.
| Step | What to do |
|---|---|
| 1 | Check whether any de minimis state aid has been received, confirmed in writing [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
| 2 | Add the aid received for the claim year and the two years before [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
| 3 | Add the full Employment Allowance for the claim year, converted to euros at the 30 March rate [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
| 4 | Compare the total to the sector ceiling; if below, the business can claim [[1]](https://www.gov.uk/claim-employment-allowance/claim-for-past-years) |
Because the allowance counts at its full value even where the business only uses part of it against its National Insurance, the calculation uses the headline £10,500 rather than the amount actually absorbed [1]. This is a conservative approach that protects against breaching the ceiling [4]. Software that embeds payroll through a UK payroll API can carry the full allowance figure into a client's state aid record automatically, which keeps the three-year total accurate.
A worked example in the agriculture sector
The tightest ceiling shows how quickly the allowance can consume the available headroom. Suppose a Northern Ireland farming company that sells agricultural products has already received the equivalent of 6,000 euros of de minimis aid across the claim year and the two years before, in the form of a small grant [1]. Its agriculture ceiling is 20,000 euros over three years [1].
Adding the full £10,500 Employment Allowance, converted to euros at the 30 March rate, might bring roughly 12,000 euros into the calculation [4]. Combined with the 6,000 euros already received, the running total reaches about 18,000 euros, which stays below the 20,000 euro ceiling, so the company can still claim [1]. Had the earlier grant been larger, say 10,000 euros, the same allowance would push the total to around 22,000 euros and bar the claim entirely [1]. The example shows why a farming business has to keep a precise record of every piece of de minimis aid, since the allowance alone can occupy more than half the ceiling.
Connected companies and a shared ceiling
The de minimis rule interacts with the connected companies rule. Where a business is part of a connected group, the total de minimis state aid for all of the companies in the group must be below the state aid limit for the sector [1]. The ceiling is not multiplied by the number of companies; it applies to the group as a single undertaking [3].
This layers on top of the existing restriction that only one company in a connected group can claim the Employment Allowance in the first place, a point covered in detail in this guide to connected companies and the Employment Allowance [7]. For an affected group in Northern Ireland dealing in goods, the analysis therefore runs in two stages: identify which single company will claim the allowance, then confirm that the group's combined de minimis aid, including that allowance, stays within the sector ceiling [1]. A group that has drawn heavily on other de minimis support, such as certain grants, may find the allowance tips it over the limit [1].
How to declare state aid when claiming
For affected businesses, the declaration is made as part of the normal claim through the Employer Payment Summary. Where the de minimis state aid rules apply, the employer answers Yes to the question of whether state aid rules apply, then selects the business sectors that apply to it [5]. Using HMRC's Basic PAYE Tools, the employer selects the employer, selects Employment Allowance, checks the eligibility criteria, answers the state aid question, selects the relevant sectors, and sends the EPS as normal [5].
Selecting the correct sector is important, because it sets which ceiling applies [1]. A business that makes or sells goods but is not in agriculture, fisheries, or road freight transport generally selects the industrial or other category, which carries the 200,000 euro ceiling [5]. After a valid claim for a previous year with a sector selected, HMRC confirms in writing that the Employment Allowance counts as de minimis state aid, which the business then records against its running total for future years [1]. Keeping that confirmation is essential, because the three-year calculation depends on knowing the aid already received [1].
The euro conversion is a further detail worth handling with care. Because the ceilings are expressed in euros but the allowance is a sterling figure, the total has to be converted using the exchange rate published for 30 March of the previous tax year, not the rate on the day of the claim [1]. Using the wrong rate can move a borderline business either side of its ceiling, so an affected employer should note the correct rate alongside its running aid total each year. For businesses that are clearly outside the goods and Northern Ireland conditions, none of this applies, and the allowance is claimed as a straightforward relief with a simple No to the state aid question [5].
Conclusion
De minimis state aid turns the Employment Allowance from a simple relief into a capped one for a defined group of businesses. The scope is now narrow, centred on Northern Ireland businesses that make or sell goods or wholesale electricity, but for those it captures, the ceiling is a hard limit: exceed it, and the allowance cannot be claimed [1]. The ceilings themselves range from 20,000 euros for agriculture to 200,000 euros for industrial businesses, so the same £10,500 allowance weighs very differently depending on the sector [1].
For affected employers, the task is record-keeping as much as payroll: track every piece of de minimis aid over a rolling three years, add the full allowance, convert to euros, and check against the sector ceiling before claiming. For connected groups, that check runs across every company at once. Where the rules do not apply, the answer to the state aid question is a simple No, and the allowance proceeds as an ordinary National Insurance relief.
Frequently asked questions
Does the Employment Allowance still count as state aid?
For most businesses it no longer raises a state aid question. De minimis state aid limits are likely to apply only where a business is located in Northern Ireland and makes or sells goods or wholesale electricity [1]. Where the rules do apply, the allowance counts as de minimis state aid and must fit within the business's sector ceiling over three years [1].
What are the de minimis state aid limits for Employment Allowance?
The ceilings are set in euros and depend on the sector: 20,000 euros for agriculture products, 30,000 euros for fisheries and aquaculture, 100,000 euros for road freight transport, and 200,000 euros for industrial or other businesses, each measured over three years [1]. A business must stay below the ceiling for its sector, counting the full Employment Allowance and any other de minimis aid received [1].
How do I work out if I am below the de minimis limit?
Add together the de minimis state aid received in the year of claim and the two tax years before it, then add the full Employment Allowance for the claim year, converted to euros using the exchange rate from 30 March of the previous tax year [1]. If the total is below the ceiling for the business sector, the business is eligible to claim [1].
Do connected companies share one de minimis state aid limit?
Yes. Where companies are connected, the total de minimis state aid across all of the companies in the group must be below the state aid limit for the sector [1]. This sits alongside the rule that only one company in a connected group can claim the Employment Allowance in the first place [7].
