1. Live Brent and Heating Oil Pass-Through
The most important driver of the German heating oil price is not politics or seasonality, but the global crude oil price, measured by the reference index Brent. Brent is the physically tradable North Sea oil that serves as the benchmark for around two thirds of all global crude oil transactions. As of May 2026 Brent fluctuates in a mid-range; the concrete daily value is continuously updated on our methodology page and in the energy cost calculator (see data sources section below).
The bridge from the Brent world market price to the German heating oil end-consumer price is called the pass-through effect. This effect is well researched and very stable on average over recent years. The rule of thumb: For every 10 US dollars of Brent change, the German heating oil litre price changes by around 6 to 8 cents. With Brent currently at around 65 dollars, roughly 80 to 90 cents per litre of Brent component lands in your tank fill, with the rest split across margin, tax and CO2.
What this rule of thumb does not capture are three things. First, the euro exchange rate component: Brent is traded in dollars, the German heating oil bill in euros. If the euro depreciates against the dollar, the heating oil price rises even with stable Brent. Second, the crack-spread component: the refining markup, that is the difference between crude oil price and heating oil wholesale price, fluctuates with the season and refinery utilisation. Third, the regional logistics component: in southern Germany, heating oil prices are typically 2 to 5 cents per litre higher than on the North Sea coast, because tanker truck distances are longer and refinery connections differ.
Anyone who wants to verify the pass-through effect for themselves can do a simple balance exercise: write down where Brent stood the last time you ordered heating oil. Write down where Brent stands today. The difference times 6 to 8 cents per 10 dollars roughly gives the expected litre price change. This works fairly well for most months. If the real price deviates more strongly, it is usually down to one of the three components above (euro exchange rate, crack-spread, region).
2. Heating Oil Price Structure 2026: Where Does Your Money Go?
A 3000-litre tank fill cost typically between 3000 and 3300 euros gross in May 2026, with regional variation. Behind that number is a clearly traceable cost cascade. The following table shows the typical breakdown per litre and for the full tank fill. Values are estimates, no guarantee, because Brent and crack-spread fluctuate daily. As of May 2026.
| Component | Cents/Litre | Share | 3000-L tank EUR |
|---|---|---|---|
| Brent crude | ~58 ct | ~55 % | ~1,740 EUR |
| Refining margin / crack-spread | ~7 ct | ~7 % | ~210 EUR |
| Logistics / tanker truck | ~5 ct | ~5 % | ~150 EUR |
| Fuel tax (BMF fixed) | 6.135 ct | ~6 % | ~184 EUR |
| CO2 surcharge (BEHG 2026, 65 EUR/t) | 17.22 ct | ~16 % | ~517 EUR |
| Trader margin | ~4 ct | ~4 % | ~120 EUR |
| VAT (19 %) | ~17 ct | ~16 % | ~510 EUR |
| Gross end price | ~1.05 EUR | 100 % | ~3,150 EUR |
* Brent value varies daily. Values are averages as of May 2026. The breakdown is a typical assumption, no guarantee for your individual delivery.
The striking feature is the CO2 component at 17 cents per litre, which for 3000 litres adds up to a hefty 517 euros of pure CO2 burden in 2026. This component has been rising along a fixed BEHG path since 2021, and from 2027 the system switches to EU ETS-2 with then market-based pricing. Background on the conceptual classification of the CO2 levy can be found in the glossary. Anyone who wants to see the complete CO2 price path up to 2030 with a tank fill example calculation: detailed breakdown on our CO2 Price Heating Oil 2026 to 2030 Calculator sub-page. There the BEHG stages 2024 to 2026 are documented with Klimageld status and avoidance strategies.
The fuel tax for heating oil in Germany is 6.135 cents per litre and has been stable for years. It is a pure federal tax (no state-dependent share) and differs significantly from the diesel fuel tax (47.04 cents per litre), reflecting the political preferential treatment of heating oil as a social fuel. The VAT at 19 percent applies to everything: the Brent component, margin, logistics, tax and CO2 surcharge. This is a cascading component that automatically amplifies every price increase.
What does the heating oil price actually cost you per year?
Calculate in 60 seconds with your real consumption values what a Brent move means for your household. Live Brent is linked in the calculator.
Calculate in 60 seconds3. Seasonality: When Is Heating Oil Typically Cheapest?
Heating oil in Germany has shown a clear seasonal pattern for decades, driven by structural demand. In summer, little heating happens, wholesale stocks build up, refineries run summer optimisation (more petrol, less heating oil yield from the crack). In late autumn the pattern flips: heating demand rises, stocks are drawn down, refineries switch to winter yield. The result is a typical sawtooth curve with a low point in May to July and a high point in October to February.
The following visualisation shows the average seasonal movement 2020 to 2025, as a percentage deviation from the annual mean. The values are a simplified summary, not a point forecast. Individual years can deviate dramatically; in particular 2022 after Russia's invasion of Ukraine showed a broken seasonal pattern with a summer peak. As of May 2026 we are again closer to the classic pattern.
Averages 2020 to 2025, sources heizoel24 aggregator and MWV statistics. Individual years can deviate dramatically (example 2022). As of May 2026, no guarantee for future seasonal patterns.
What the data concretely shows
First: The May-July range is the most stable phenomenon. In every year from 2020 to 2025, with the exception of the summer peak in 2022, the heating oil price in these three months was below the annual mean. Second: The December-January peak is not always the highest point; often the second peak lies in February, when wholesale stocks are depleted in winter and refineries simultaneously plan maintenance. Third: The spread between min and max within a year is typically 10 to 20 percent, in normal years closer to 10 percent, in crisis years (2022) significantly more.
What seasonality does not explain: geopolitical shocks. A Hormuz escalation or an OPEC cut decision can move the price by 20 to 50 percent within days, regardless of whether it is May or December. Anyone who wants to use seasonality as a strategy should therefore always factor in the current geopolitical situation (see risk factors section below).
4. 2026 Forecast with Disclaimer
The US Energy Information Administration (EIA) publishes a monthly Short-Term Energy Outlook with Brent price forecasts for the next 12 to 24 months. As of May 2026 the EIA forecast for the year 2026 sees a Brent average of roughly 58 to 70 dollars per barrel, with a high range of variation. Concrete monthly points are less relevant than the spread. The EIA updates its estimate monthly; this forecast often fluctuates between publications by 5 to 10 dollars.
Translated into German heating oil expectations, the picture is as follows: if Brent lands at 65 dollars on annual average, the heating oil price stays in the range of roughly 1.00 to 1.10 euros per litre, with the usual seasonal fluctuations. If Brent rises to 80 dollars (for example through geopolitical escalation), 1.15 to 1.25 euros would be realistic. If Brent falls to 50 dollars (for example through a world recession), 0.85 to 0.95 euros would be conceivable. These are three scenarios, not probability statements.
Brent ~60-70 dollars
EIA forecast mean for 2026. Seasonal fluctuations as usual, May-July the cheapest.
~1.00-1.10 EUR/LBrent ~80-100 dollars
Hormuz escalation, OPEC cut or sanctions expansion. No real relief even in summer.
~1.15-1.40 EUR/LBrent ~50-55 dollars
World recession, OPEC release or accelerated energy transition substitution. May-July with low points.
~0.85-0.95 EUR/LThese three scenarios cover most of the probability space that the EIA and independent institutes see as of May 2026. Which one materialises is not predictable. The honest pratfall note: Nobody knows where the heating oil price will stand in 6 months. Anyone who claims to be able to give a concrete point forecast typically overlooks the risk factors listed individually in the next section.
For your own household planning this means: plan with the baseline scenario as the expected value, plan financially with a buffer for the crisis scenario, and be glad if the relaxation scenario materialises. That is less sexy than a concrete forecast, but financially safer. Anyone who wants to see a concrete example calculation for their own household can run the energy cost calculator through the three scenarios.
5. Risk Factors 2026: What Can Move the Price?
A forecast is only ever as good as the list of risks it does not account for. As of May 2026, five factors are under observation that can significantly move the heating oil price within weeks or even days. None of them is given as a probability, all are to be read as scenarios.
Factor 1: Hormuz Escalation
The Strait of Hormuz is the most important maritime chokepoint of global oil logistics. Around 20 percent of globally traded crude oil and an even higher share of liquefied natural gas (LNG) pass through this strait between Iran and Oman. The regional tension Iran-Israel-USA has been strongly elevated since the Israeli airstrikes in 2025; the Brent price as of May 2026 already contains a risk premium that market observers estimate at 5 to 15 dollars per barrel. A complete blockade or a military conflict with physical logistics disruption would trigger Brent spikes of plus 30 to plus 100 percent within days, depending on duration and intensity.
Factor 2: OPEC+ Cuts or Releases
The OPEC+ under Saudi Arabian leadership decides monthly on production quotas. Saudi Arabia's policy over the last two years has tended towards production discipline (cuts), with the goal of stabilising the Brent price in a corridor of 70 to 80 dollars. If this policy tightens (for example further voluntary cuts above the agreement), Brent can rise short-term by 5 to 10 dollars. If conversely market share battles break out (see the Saudi vs. Russia episode 2020 as a historical reference), Brent can fall dramatically. Both directions are possible; as of May 2026 discipline is the more likely scenario.
Factor 3: US Sanctions and Shadow Fleet
EU and US sanctions against Russian oil exports have created a shadow fleet of old tankers that delivers Russian oil to India, China and other non-sanctioning countries. As of May 2026 this logistics continues to flow, with periodic sanctions tightenings that can cause bottlenecks. If the US or the EU tightens secondary sanctions (that is, penalties against tanker owners, insurers and port states), Russian oil volume in the world market may decline, and Brent may rise as a result. As of May 2026 this is a risk, not a main scenario.
Factor 4: EU ETS-2 Transition 2027
From 2027, the CO2 price for heating oil in Germany switches from the national BEHG fixed-price logic to the EU-wide ETS-2 system with market-based pricing. This structural change can move the heating oil price in both directions: if the market lands below the current fixed price of 65 euros per tonne, there will be short-term relief. If the market lands significantly above (for example in a cold winter or geopolitical crisis), an additional layer may emerge. A complete breakdown with the path up to 2030 can be found on our CO2 Price Heating Oil sub-page.
Factor 5: European Winter Weather
The most trivial but often underestimated factor. A cold winter in Central Europe increases heating demand, and with it heating oil spot prices. In crisis years (example 2022/2023), a single particularly cold February can cause the wholesale price to jump by 10 to 20 percent. Weather forecasts for the 2026/2027 winter season are still very uncertain as of May 2026; long-range models such as the ECMWF seasonal forecast currently show a slightly above-average cold winter, but with high spread. For ordering planning this means: anyone who relies on seasonality (buy in May-July) hedges against an extremely cold winter, even if it does not materialise.
What would +30 % Brent mean for your household?
In the energy cost calculator you can run your own crisis scenario, with your real consumption and your household size. Live Brent as anchor, scenario slider included.
Run crisis scenario6. Seasonal Ordering Strategy
The strategic question is not "when is the absolute cheapest day" (nobody knows that), but "how do I reduce my price risk over the heating season". Here are the three most practical strategies for households with a heating oil tank, in descending order of risk spreading.
- Full tank in May or June (standard strategy) The simplest variant: fill the tank once a year, ideally in May or June, when statistically the lowest price is expected. Advantage: no effort, clear planning. Disadvantage: full market price exposure on the May-June daily price. If a geopolitical shock happens on exactly those two days, you are out of luck. This strategy works well for most households in normal years, but does not cover crisis years such as 2022. As of May 2026 it is the default recommendation, because no acute crisis is running in May.
- Half-tank strategy (third split) Instead of filling once in full, split the tank volume into three parts: one third in May, one third in July, one third in September. Advantage: price risk is averaged across three different days, fluctuation is reduced. Disadvantage: three ordering operations instead of one, marginally higher logistics costs per litre (tanker truck drive-up with smaller quantity). This strategy is optimal for price-conscious households with medium to large tank capacity (3000 litres or more). It does not eliminate the average seasonal pattern (the summer low is retained), but it hedges against a single bad ordering day.
- Crisis override (immediate fill on escalation) If a clear crisis signal comes (Hormuz escalation, OPEC cut, sanctions tightening), fill immediately regardless of seasonality. Rationale: seasonal advantages of 10 to 20 percent are completely overshadowed by crisis spikes of 30 to 100 percent. Anyone who did not fill in May 2022 after the start of the Ukraine war but waited for the usual summer order paid significantly more in August 2022. Pratfall: this strategy only works if you identify the crisis signals correctly. That is not trivial, which is why we have an optional Brent alert newsletter that informs you about larger Brent moves (see newsletter card at the bottom of this page).
Comparison with the heat pump as a long-term alternative
Ordering strategies are a short-term optimisation within the existing heating oil economy. They lower energy costs typically by 5 to 15 percent compared to a naive strategy (refill any time when the tank is empty). A fundamentally different answer is the substitution of fossil heating. A heat pump decouples you from Brent price risk and the CO2 burden completely. With the current BAFA heat pump subsidy of up to 70 percent, the payback is achievable for many households within 8 to 12 years.
Anyone seriously considering switching to a heat pump: details on the subsidy, prerequisites and application path can be found on our sub-page Heat Pump Subsidy 2026 Calculator. Anyone who wants to see the complete CO2 path up to 2030 with avoidance strategies: sub-page CO2 Price Heating Oil 2026 to 2030 Calculator. Both sub-pages together give you the full picture for a well-founded long-term decision.