Carbon Credits vs Carbon Offsets: What’s the Difference?

Guide · June 2026

“Carbon credit” and “carbon offset” get used interchangeably, but they are not quite the same thing — and the difference matters once compliance markets enter the picture. Here is a plain-English breakdown.

Credit vs offset: the real distinction

A carbon credit is a tradable certificate representing one tonne of CO₂e reduced or removed. It becomes an offset only when someone retires it to compensate for their own emissions. In other words: every offset is a credit that has been used; not every credit is used as an offset. The same instrument, a different verb.

Compliance vs voluntary markets

There are two worlds. Compliance markets, like the EU Emissions Trading System, are government-mandated cap-and-trade schemes where regulated companies must hold allowances. Voluntary markets are where businesses and individuals buy credits by choice. Prices, rules and quality vary enormously between them.

What this means for you

If you are acting voluntarily, you are not bound by a cap — which means quality is entirely on you to verify. That is the case for funding projects you can actually stand behind rather than chasing the cheapest tonne. See how we fund climate action.

Part of the bigger picture

This guide is part of our deeper look at carbon offsetting and what we fund instead.