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Home› Calculators› Tax & Legal› Carbon Tax Calculator
Carbon Tax Calculator 2025
Carbon cost across EU, UK, Germany, Sweden, Canada, Singapore & more
Country / Scheme
🌿 Annual emissions by activity
Enter your annual consumption in each category. Leave blank or zero to skip. CO₂e factors are per the IPCC and IEA 2025 guidance.
⛽ Petrol / gasoline
L/yr
2.31 kg CO₂/L
⛽ Diesel
L/yr
2.68 kg CO₂/L
🔥 Natural gas (home heating)
m³/yr
1.94 kg CO₂/m³
⚡ Electricity
kWh/yr
0.233 kg CO₂/kWh (EU avg)
🔥 Heating oil / fuel oil
L/yr
2.68 kg CO₂/L
☁ Coal (home / industrial)
tonne/yr
2,420 kg CO₂/tonne
✈ Short-haul flights (<3 hr)
flights/yr
0.255 tCO₂e/return flight
✈ Long-haul flights (>3 hr)
flights/yr
1.20 tCO₂e/return flight
🍖 Beef consumption
kg/yr
27 kg CO₂e/kg beef
🚗 Car km driven (annual)
km/yr
0.171 kg CO₂/km (avg ICE)
🎭 Scenarios & offsets
t
Purchased carbon credits reduce your net footprint and estimated carbon liability.
%
See how much you would save if you reduced emissions by this percentage.
Total CO₂e Emissions
—
tonnes per year
Carbon Tax Cost
—
at current rate
vs Country Average
—
per capita comparison
Reduction Saving
—
at target reduction %
Net Emissions (after offsets)
—
tCO₂e/year
Carbon Rate Used
—
per tonne CO₂e
Monthly Carbon Cost
—
annual cost / 12
Cost per tCO₂e
—
effective carbon price
Emissions & Carbon Cost by Source
CO₂e Emissions by Source (tonnes/year)
Transport
Home energy
Flights
Diet & other
Your Carbon Cost vs All Countries (same emissions, different carbon price)
Annual carbon cost
Your country
Carbon Tax Comparison — Same Emissions, Every Country
Country / Scheme Mechanism 2025 Rate Your CO₂e Cost Per Capita Avg Your vs Avg
Emissions & Cost Summary
Petrol / gasoline—
Diesel—
Natural gas—
Electricity—
Heating oil—
Coal—
Short-haul flights—
Long-haul flights—
Beef consumption—
Car km driven—
Total gross emissions—
Carbon offsets (credits purchased)—
Net emissions after offsets—
Carbon rate applied—
Annual carbon tax cost—
Monthly carbon cost—
Saving at reduction—
✦ Cal, AI Carbon Analysis
Cal is analysing your carbon footprint...
💬 Ask Cal about your carbon footprint
Cal
Your carbon cost is calculated. Ask me which activity to cut first, how your footprint compares to country averages, or what carbon offsets actually cost.

How carbon pricing works

Carbon pricing puts a monetary cost on greenhouse gas emissions to incentivise reduction. Two main mechanisms exist. A carbon tax sets a fixed price per tonne of CO₂ equivalent — emitters pay that price regardless of how much they emit. A cap-and-trade system (ETS) sets a total emissions cap, issues allowances up to that cap, and lets emitters buy and sell allowances — the price is set by the market.

In practice, most countries now use a combination: an ETS for large industrial and power sector emitters, with a separate carbon levy or fuel tax for the transport and heating sectors that individual households and businesses interact with most directly.

2025 carbon prices by country

Country / SchemeMechanism2025 RateSectors
Germany (nEHS)National carbon levy€55/tCO₂Transport & heating fuels (excl. ETS industry)
Sweden (koldioxidskatt)Carbon tax€130/tCO₂ (SEK 1,530)Transport & heating fuels; world's highest
UK ETSCap & trade~£40–50/tCO₂ (market)Power, heavy industry, aviation
Netherlands (CO₂-heffing)Carbon levy€60.40/tCO₂Industry (minimum carbon price on top of EU ETS)
EU ETSCap & trade~€55–70/tCO₂ (market)Power, heavy industry, aviation, maritime 2024
Canada (federal backstop)Carbon levyC$80/tCO₂Fuels; rebated via CAIP to households
SingaporeCarbon taxS$25/tCO₂Industry >25,000 tCO₂/yr; rising to S$50–80 by 2030
Norway (CO₂-avgift)Carbon tax~€85/tCO₂ (NOK 1,060)Petroleum sector, transport, industry
Australia (Safeguard)Baseline & credit~A$32–40/tCO₂Large industrial facilities >100,000 tCO₂/yr
South AfricaCarbon taxZAR 236/tCO₂Fuels & industrial; significant exemptions apply

CO₂e emission factors used in this calculator

Petrol / gasoline: 2.31 kg CO₂/litre
Diesel: 2.68 kg CO₂/litre
Natural gas: 1.94 kg CO₂/m³ (0.202 kg CO₂/kWh)
Heating oil: 2.68 kg CO₂/litre
Coal: 2,420 kg CO₂/tonne
Electricity (EU avg): 0.233 kg CO₂/kWh
Electricity (UK): 0.207 kg CO₂/kWh
Electricity (CA): 0.130 kg CO₂/kWh
Electricity (AU): 0.580 kg CO₂/kWh
Short-haul flight: 0.255 tCO₂e/return (economy, incl. RFI)
Long-haul flight: 1.20 tCO₂e/return (economy, incl. RFI)
Beef: 27 kg CO₂e/kg (farm-to-fork, IPCC AR6)
Car km (avg ICE): 0.171 kg CO₂/km
RFI (Radiative Forcing Index) multiplier of 1.9 applied to aviation to account for contrails and high-altitude warming effects. Emission factors based on IPCC AR6, IEA 2024, DEFRA 2024, and national grid intensity data. Actual factors vary by vehicle efficiency, grid mix, fuel blend, and production methods. This calculator uses representative 2024/2025 averages.

Frequently Asked Questions

What is the difference between a carbon tax and an ETS?+
A carbon tax sets a fixed price per tonne of CO₂ that emitters must pay. The government determines the price and emitters respond by reducing emissions to the point where the cost of further reduction exceeds the tax. A cap-and-trade system (ETS) works differently: the government sets a cap on total emissions, issues allowances up to that cap, and lets companies buy and sell them. The price is determined by supply and demand in the market. Carbon taxes are more price-predictable, which helps businesses plan investments. ETS systems are more quantity-predictable, guaranteeing a specific total emissions level. Many jurisdictions now use both: an ETS for large industrial and power emitters, and a fuel levy (effectively a carbon tax) for transport and heating.
Does Sweden really have the world's highest carbon tax?+
Yes. Sweden introduced its carbon tax in 1991 and has increased it consistently. The 2025 rate is approximately SEK 1,530 per tonne CO₂, equivalent to around EUR 130 per tonne — the highest explicit carbon price of any national tax system in the world. The tax applies to transport fuels and heating fuels but not to sectors covered by the EU ETS or to industries that compete internationally, which benefit from lower rates to protect competitiveness. Sweden's carbon tax is credited as one reason the country decoupled economic growth from emissions growth more effectively than almost any other nation since the 1990s.
How does Canada's carbon rebate work?+
Canada's federal carbon price (currently C$80 per tonne in 2025, rising to C$170 by 2030) applies to fossil fuels in provinces without their own equivalent carbon pricing. The revenue is returned directly to households as the Canada Carbon Rebate (formerly CAIP — Climate Action Incentive Payment), paid quarterly. The amounts vary by province and household size. The federal government states that approximately 80% of households receive more in rebates than they pay in carbon charges, with higher-income households typically paying more than they receive. The intention is to maintain the price signal for emissions reduction while protecting lower-income households from net financial impact.
What does the EU ETS price mean for consumers?+
The EU ETS primarily applies to large industrial plants, power generators, airlines, and (from 2024) shipping companies. Consumers do not pay the ETS price directly. However, power generators pass the cost of allowances into electricity prices, so EU consumers see higher electricity bills when the ETS price is high. A new system — EU ETS 2 — was agreed to extend carbon pricing to transport and heating fuels for households from 2027, which will directly raise petrol, diesel, and gas prices for consumers. The EU ETS 2 price is capped at EUR 45 per tonne for the first two years to ease the transition, with a Social Climate Fund to compensate vulnerable households.
Why do aviation emissions include a multiplier?+
Aviation's climate impact is greater than the CO₂ from burning fuel alone. At high altitude, aircraft also create contrails (condensation trails) and trigger the formation of cirrus clouds, which trap outgoing heat. They also emit nitrogen oxides that react with atmospheric chemistry to create ozone and destroy methane. The Radiative Forcing Index (RFI) accounts for these effects by multiplying direct CO₂ emissions by a factor, most commonly 1.9 to 2.0 for economy class passengers. This means the true climate impact of a long-haul flight is roughly double the CO₂ from the fuel combustion alone. Some offsetting schemes and footprint calculators use the multiplied figure; others use CO₂ only, which substantially understates aviation's warming impact.
What is the difference between CO₂ and CO₂e?+
CO₂ is carbon dioxide, the most abundant greenhouse gas from fossil fuel combustion. CO₂e (CO₂ equivalent) is a standardised unit that converts all greenhouse gases to their equivalent warming impact expressed as CO₂. Methane (CH₄), for example, has approximately 27 to 30 times the warming potential of CO₂ over 100 years, so 1 tonne of methane equals approximately 28 tCO₂e. Nitrous oxide (N₂O) has approximately 273 times the warming potential. Agriculture and livestock farming contribute significantly to CO₂e emissions through methane from enteric fermentation and nitrous oxide from fertilisers. When comparing emissions across sectors including energy, transport, and food, CO₂e is the correct unit to use because it captures the full climate impact.

🌿 2025 Carbon prices

CountryRate/tCO₂
Sweden€130
Norway€85
Netherlands€60
Germany€55
EU ETS€55–70
UK ETS£40–50
CanadaC$80
AustraliaA$35
SingaporeS$25
South AfricaZAR 236

📈 Per-capita CO₂e benchmarks

EU average: ~7.5 tCO₂e/year per person
UK: ~5.5 tCO₂e/year
Germany: ~9.0 tCO₂e/year
Sweden: ~4.5 tCO₂e/year
Canada: ~14.0 tCO₂e/year
Australia: ~15.0 tCO₂e/year
Global average: ~4.7 tCO₂e/year
Paris 1.5°C target: ~2.0 tCO₂e/year

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