Farm Operating Cost Calculator

Farm operating costs for arable farming in the UK include seed, fertiliser, crop protection, fuel, labour, machinery depreciation, rent and overheads. The variable costs, meaning seed, fertiliser and sprays, typically run £500 to £700 per hectare for winter wheat, while fixed costs such as rent, labour and machinery add another £400 to £700 per hectare. Keeping the two apart matters, because only the variable side responds to a cropping decision taken in the current season.

This calculator breaks down costs per hectare by category from your own figures, with typical winter wheat values filled in to start from. It shows total cost of production per tonne, which you can compare against current market prices to assess profitability, and changing any single input, say a 10% rise in fertiliser cost, shows straight away how it feeds through to that figure. Knowing the cost base is what allows you to argue about input prices, benchmark against other farms and decide what to drill.

Wider benchmarks put those numbers in context. The average UK arable farm spends £900 to £1,400 per hectare once land rent and finance are set aside, livestock enterprises running sheep or cattle £600 to £900, and dairy £2,500 to £4,000 per cow per year. Fertiliser and chemicals account for 25 to 35% of the total, labour 15 to 25%, machinery depreciation 15 to 20% and fuel 10 to 15%, with veterinary bills and feed taking 15 to 30% on livestock units. Costs rose 30 to 50% between 2021 and 2024 on fertiliser, fuel and feed inflation, which is why an old budget sheet flatters the current year.

Input prices for 2026 are easier to check than to predict. Ammonium nitrate sits at £350 to £500 a tonne, well down from the 2022 peak above £1,000. Red diesel, at the lower off-road duty, costs £0.95 to £1.15 a litre. Seed runs £150 to £300 per hectare and spray chemicals £300 to £500 on arable ground. Labour is £15 to £25 an hour for general farm work and £30 to £50 for skilled operators such as combine drivers and herdsmen, while veterinary costs on a dairy herd come to £400 to £800 per cow per year.

Support payments no longer fill the gap they once did. Subsidies historically covered 35 to 50% of farm income, but the Basic Payment Scheme has ended, the delinked payments that replaced it stop after 2027, and Environmental Land Management payments take over. SFI26 rates run from £45 per hectare for keeping arable crops free of insecticide to £798 for flower-rich grass margins, with winter cover crops at £129 and hedgerows paid at £13 per 100m, and for farms already leaning towards environmental work SFI now pays better than BPS did. The Farm Business Survey for 2024/25 puts average Farm Business Income at £49,700 on cereals farms, £40,300 on grazing livestock farms in Less Favoured Areas, £52,700 in horticulture and £153,800 in dairy.

Diversification now supplies 30 to 40% of total income across UK farms. Holiday lets and camping can add £10 to £30k a year, livery brings £100 to £200 per horse per month, and renewable energy pays ground rent of £400 to £800 an acre for solar or £8,000 to £30,000 per turbine per year for wind. Farm shops and cafés sit alongside those. The tax position needs watching, because a holding still counts as a farm trade for Agricultural Property Relief while it is mainly used for farming, and a business that tips into pure tourism can lose that relief.

Inheritance tax changes announced in the October 2024 Budget have applied since 6 April 2026, under the Finance Act 2026, and reshape farm succession. Agricultural Property Relief and Business Property Relief share a combined cap of £2.5M at 100% relief, with 50% relief above it, which leaves an effective 20% inheritance tax charge on agricultural and business assets over that line where the rate was previously 0%. A farm worth £2M therefore pays nothing extra, while one worth £10M faces about £1.5M (20% of the £7.5M above the cap), or £1M where a spouse's unused allowance is transferred, so lifetime gifting, partnership structures and trustee planning have moved from optional to central.