Agricultural Relief: How a €1m Farm Drops to €100,000 for CAT (and the Active-Farmer Test)
Agricultural relief is the single biggest lever in Irish farm succession. It cuts the market value of qualifying agricultural property by 90% for Capital Acquisitions Tax (CAT) — so a €1,000,000 farm is taxed as if it were worth only €100,000. Layer that against the €400,000 parent-to-child (Group A) threshold and the CAT bill on that farm can be zero. But the relief only sticks if you pass the 80% "farmer test", meet the active-farmer or 6-year-lease condition, and avoid the 6-year clawback.
What agricultural relief actually does
Under section 89 of the Capital Acquisitions Tax Consolidation Act 2003, agricultural relief reduces the taxable value of agricultural property — land, the farmhouse and farm buildings, livestock, bloodstock, machinery and a single payment entitlement — by 90%. Revenue states it plainly: "This relief reduces the taxable value of the property, including land, by 90%."
The mechanics matter. CAT is charged at 33% on the value of a gift or inheritance above your lifetime group threshold (see Revenue's thresholds, rates and aggregation rules). The relief works before the threshold is applied: you first knock 90% off the agricultural value, and only the remaining 10% — the "agricultural value" — counts toward your threshold. That ordering is what turns large farms into nil bills.
Síle inherits her late father Pádraig's working dairy farm in Co. Tipperary. The farm — land, sheds, herd and machinery — is valued at €1,000,000 at the valuation date. Síle is his daughter, so she is in Group A (€400,000 threshold) and has received no prior gifts or inheritances since 5 December 1991. She holds a Teagasc Green Cert and will farm the land herself.
- Start with market value: €1,000,000
- Apply 90% agricultural relief: €1,000,000 × 90% = €900,000 reduction
- Agricultural value (the 10% that remains taxable): €1,000,000 − €900,000 = €100,000
- Deduct the Group A threshold: €100,000 − €400,000 = a negative figure, so the taxable amount is €0
- CAT at 33%: €0 × 33% = €0
Síle pays no CAT, and she has used only €100,000 of her €400,000 lifetime Group A threshold — leaving €300,000 of headroom for future inheritances from her parents. Without the relief, the sum would have been (€1,000,000 − €400,000) × 33% = €198,000.
| Step | With agricultural relief | Without relief |
|---|---|---|
| Market value | €1,000,000 | €1,000,000 |
| 90% reduction | − €900,000 | — |
| Taxable agricultural value | €100,000 | €1,000,000 |
| Less Group A threshold | − €400,000 | − €400,000 |
| Taxable excess | €0 | €600,000 |
| CAT at 33% | €0 | €198,000 |
The €198,000 saving is real money. It is also conditional — every condition below has to hold, or Revenue can withdraw part or all of the relief.
Condition 1 — the 80% "farmer test" on total assets
This is the test most people misunderstand. To be a "farmer" for the relief, at least 80% of the gross market value of all your property, after you take the gift or inheritance, must consist of agricultural property. Revenue's wording: "At least 80% of the total value of your property must consist of agricultural property."
Two things trip people up:
- It is measured at the valuation date, after the benefit. You add the inherited farm to everything you already own, then check whether 80% of that combined gross value is agricultural.
- Most debts are ignored. The test uses gross values. The one carve-out is a mortgage or charge on your own off-farm principal private residence, which you may deduct from that house's value when running the 80% calculation. Other personal borrowings do not help you pass.
The family home itself is the classic problem. A large non-farm house, an investment property or a big share portfolio can push the agricultural share below 80% and disqualify you entirely — there is no partial pass.
Conor inherits agricultural land worth €600,000. He already owns a Dublin apartment worth €450,000 (with a €200,000 mortgage) and has €50,000 in savings.
- Agricultural property: €600,000
- Apartment, net of its mortgage (PPR deduction allowed): €450,000 − €200,000 = €250,000
- Savings: €50,000
- Total property: €600,000 + €250,000 + €50,000 = €900,000
- Agricultural share: €600,000 ÷ €900,000 = 66.7%
Conor fails the 80% test, so the 90% reduction is not available on the land at all. If he had cleared off-farm assets or restructured before the valuation date, the outcome could have been very different — which is why timing advice matters here.
Condition 2 — the active-farmer test (or the 6-year lease)
Passing the 80% asset test is no longer enough on its own. For benefits taken on or after 1 January 2015, the recipient must also clear an active-farmer test. Per Revenue's conditions for agricultural relief, for a period of six years from the valuation date you must do one of the following:
- Farm the property yourself on a commercial basis for at least six years; or
- Lease the property for at least six years to someone who farms it on a commercial basis.
Whoever does the farming (you or your lessee) must also meet a qualification test — either:
- hold a recognised agricultural ("trained farmer") qualification — the list in section 654A of the Taxes Consolidation Act 1997, or a Teagasc-certified equivalent; or
- farm the land for at least 50% of their normal working hours.
This is the route many non-farming heirs use: you do not have to give up your day job and milk cows. If you have no farming qualification and won't farm half-time, you can grant a long-term lease (six years or more) to a qualifying active farmer and still claim the relief. The 6-year lease is therefore the practical "escape hatch" for the city-based daughter who inherits the home farm.
Aoife, a solicitor in Galway, inherits her uncle's 60-acre farm worth €700,000. She has no Green Cert and won't farm. To keep the 90% relief, she grants a 10-year lease to her neighbour Tomás, who holds a Teagasc qualification and farms commercially. Aoife passes the active-farmer test through Tomás, keeps the 90% reduction, and earns lease income on top. She must hold the land (and the lease arrangement) for the full six-year window to avoid clawback.
Condition 3 — the 6-year clawback on disposal
The relief is not final on day one. Under Revenue's clawback rules, if the agricultural property (other than crops, trees and underwood) is sold or compulsorily acquired within six years of the valuation date, the relief is clawed back — Revenue recalculates the CAT as if the relief had never applied to the part disposed of.
There is a crucial let-out: the clawback does not apply if the full proceeds are reinvested in other agricultural property within one year of the sale (or within six years where the land was taken by compulsory purchase order). If you reinvest only part of the proceeds, only a proportionate part of the relief is clawed back. Where Capital Gains Tax is paid on the disposal, only the net proceeds after that CGT need be reinvested.
Three years after inheriting, Síle (from our first example) sells 20 acres for €250,000 to fund a new milking parlour. That sale is within the six-year window, so it triggers a clawback — unless she reinvests. She buys an adjoining 18-acre paddock for €250,000 four months later. Because she reinvested the full proceeds in other agricultural property within one year, no clawback arises and the 90% relief on the original farm stands. Had she spent the €250,000 on the parlour instead, the relief on that €250,000 slice would have been withdrawn and CAT recalculated.
Stacking agricultural relief with the dwelling-house exemption on the farmhouse
The farmhouse is usually treated as agricultural property and gets the 90% reduction along with the land. But in some succession plans — particularly where the house could otherwise tip you over or under the 80% test, or where it is being inherited separately — the dwelling-house exemption can exempt the residence entirely (100%), leaving agricultural relief to do the heavy lifting on the land.
The dwelling-house exemption is restrictive. Per Revenue, the beneficiary must:
- have lived in the house as their only or main home for the 3 years immediately before the date of the inheritance;
- not own or have an interest in any other dwelling at the date of the inheritance; and
- continue to occupy it as their only or main home for 6 years after (relaxed if they are 65+, or required to live elsewhere for work or certified ill-health).
Where both apply, the standard approach is: the farmhouse is exempt under the dwelling-house rules (no value enters the CAT computation at all), and the land, sheds, stock and machinery get the 90% agricultural reduction. Watch the interaction with the 80% test carefully — a house that is fully exempt is still counted as non-agricultural property when you measure the 80% farmer test, so a high-value home can still block agricultural relief on the land even if the house itself escapes tax. This is precisely the kind of overlap to model before the valuation date, not after.
- Agricultural relief cuts qualifying farm value by 90%; only the remaining 10% counts toward your CAT threshold.
- A €1,000,000 farm becomes €100,000, which sits inside the €400,000 Group A threshold — so a child can inherit it for €0 CAT.
- You must pass the 80% farmer test: at least 80% of your total gross property must be agricultural after the benefit (only a mortgage on your own off-farm home is deductible).
- You must also pass the active-farmer test: farm commercially for 6 years or lease to a qualifying farmer for 6 years, with a trained-farmer qualification or 50% working-time test met.
- Selling within 6 years triggers clawback — avoidable if you reinvest the full proceeds in other agricultural property within 1 year (6 years for a CPO).
- The farmhouse can be combined with the dwelling-house exemption, but a high-value home still counts against your 80% test.
Sources: Revenue — Agricultural Relief; Revenue — Conditions for Agricultural Relief; Revenue — Clawback; Revenue — CAT thresholds & rates (Group A €400,000; rate 33%); Revenue — Dwelling-House Exemption. Thresholds confirmed unchanged in Budget 2026.
Plan a farm succession without guessing
Get our free Irish agricultural-relief checklist — the 80% test, active-farmer routes and the clawback timeline, on one page.
You're on the list — we'll be in touch.
Frequently asked questions
Is agricultural relief a 90% reduction on the tax or on the value?
On the value, not the tax. It reduces the taxable market value of qualifying agricultural property by 90%, leaving only 10% — the "agricultural value" — to be set against your CAT threshold and taxed at 33% on any excess. It is not a 90% cut to your final tax bill, though in practice the threshold often wipes out what remains.
Do I have to be a farmer myself to claim it?
No. You must pass the active-farmer test, but you can do that by leasing the land for at least six years to someone who farms it commercially and holds a recognised agricultural qualification (or farms it for 50% of their normal working hours). A six-year-plus lease to a qualifying farmer lets a non-farming heir keep the full 90% relief.
What is the 80% farmer test exactly?
After you take the gift or inheritance, at least 80% of the gross market value of all your property must be agricultural property. It is measured at the valuation date, debts are generally ignored, and the only deduction allowed is a mortgage on your own off-farm principal private residence. A large non-farm house or investment portfolio can push you below 80% and disqualify the relief entirely.
What happens if I sell the farm after inheriting it?
If you dispose of the agricultural property within six years of the valuation date, the relief is clawed back unless you reinvest the full proceeds in other agricultural property within one year of the sale (within six years for a compulsory purchase). Reinvest only part and only a proportionate part of the relief is clawed back.
Can the farmhouse qualify for both agricultural relief and the dwelling-house exemption?
The farmhouse normally gets the 90% agricultural reduction with the rest of the farm. In some plans the dwelling-house exemption can exempt the residence entirely instead, leaving agricultural relief to cover the land. But beware: a house that is fully exempt still counts as non-agricultural property when you measure the 80% farmer test, so a high-value home can still block agricultural relief on the land.
Does agricultural relief reduce my CAT threshold?
Only the post-relief value uses up your threshold. In the worked example, a €1,000,000 farm reduced to €100,000 used just €100,000 of the €400,000 Group A threshold — leaving €300,000 of lifetime headroom for future gifts or inheritances from a parent.