Ireland's Nitrates Derogation, Explained

The single most common misunderstanding about the nitrates derogation is that it is a programme you join. It is not. The EU Nitrates Directive (91/676/EEC) sets a baseline in Annex III(2): a maximum of 170 kg of nitrogen per hectare per year from livestock manure. The derogation is a Commission decision permitting Ireland to authorise certain farms to exceed that baseline.

That distinction matters, because it explains why the terms keep moving. A scheme has rules its owner can adjust. A derogation is an exception granted for a fixed period, reviewed against evidence, and renewed or not by the European Commission. Irish farmers are not negotiating with Dublin here so much as living inside a decision taken in Brussels.

Only grassland farms qualify. Under the terms governing the 2026 to 2028 derogation period, a grassland farm means a holding where at least 80% of the agricultural area available for manure application is grass. Fall below that and the derogation is not available to you, regardless of how the rest of the farm is run.

This is why the derogation is, in practice, a dairy and drystock instrument. It is written around Ireland's grass-based systems, and a holding with substantial tillage simply falls outside the definition.

An authorised farm may exceed the 170 kg baseline, but not without limit. The headline figure is 250 kg of nitrogen per hectare per year from livestock manure. Since 1 January 2024, however, that ceiling drops to 220 kg on holdings whose land drains into waters where monitoring showed the required water quality was not being met.

The mechanism for that split came from Article 12 of Commission Implementing Decision (EU) 2022/696, headed “Two-year review”. Irish authorities carried out that review in 2023 and mapped the areas where the limit would fall. So whether you are on 220 or 250 is not a matter of farm type or stocking ambition. It is a matter of which catchment your land drains into.

The practical consequence is that two neighbouring farms running identical systems can sit under different ceilings. If you have not checked which applies to your holding, that is the first thing to establish, not the last.

Ireland's current Nitrates Action Programme is the Sixth. It was given legal effect by the European Union (Good Agricultural Practice for Protection of Waters) Regulations 2025, S.I. No. 588 of 2025, signed on 8 December 2025.

That statutory instrument is where the day-to-day obligations live: closed periods for spreading, storage requirements, buffer distances from watercourses. The derogation decision sets your nitrogen ceiling; the regulations set how and when you may apply what you have.

Commission Implementing Decision (EU) 2026/67, made on 22 December 2025, amended the 2022 decision and replaced its expiry date. Ireland's derogation now runs to 31 December 2028.

The Commission's own wording is worth reading rather than paraphrasing. It described the step as “appropriate and prudent to exceptionally extend” the derogation. That is not the language of a settled, permanent arrangement, and planning a farm system on the assumption that the derogation is indefinite would be reading it more generously than it reads.

Three years is real breathing room. It is not certainty.

Everything above is drawn from primary sources: the Nitrates Directive itself, Commission Implementing Decisions 2022/696 and 2026/67, and S.I. No. 588 of 2025. We have cited them so you can read them rather than take our word for it.

But nitrates rules are amended, re-mapped and reviewed, and a farm-specific question about your ceiling, your closed periods or your storage is a question for the Department of Agriculture, Food and the Marine or your own advisor. We build software for farmers and we are careful about the line between explaining a rule and advising you on your holding. This article is the former.