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The gigantic volumes of carbon dioxide (CO₂) removal likely needed to comply with the Paris Agreement beg the question of who should pay for the negative emissions. Incentivizing negative emissions is difficult, as it entails reversing the fiscal attractiveness associated with carbon taxes and emissions trading in favour of the more unattractive need to pay for removals. The inherent difficulty of funding global public goods associated with large private costs will make it hard for future governments to share this burden among themselves. We propose that this problem can be solved by a CO₂ emitter liability operationalized through Atmospheric CO₂ Removal Deposits (ACORDs). Anyone that emits fossil CO₂ to the atmosphere would be obliged to finance the removal of at least as much CO₂ from the atmosphere. Linking the liability to ACORDs acknowledges that a major part of the negative emissions needs to be …