Vitalik Buterin stated that #ETH is considering implementing a Harberger tax on layer 2 (L2) blockchains, but he emphasized that this could be challenging.

A Harberger tax is a regulation that provides for a continuous tax on value and could affect the value of L2 projects.

Buterin noted that this tax mechanism could harm the ecosystems of L2 networks, especially undervaluations for tax evasion purposes.

Alternatively, Buterin suggested creating a “maximum-neutral-L2 proof aggregation layer” for L2 networks that send fees to Ethereum’s #layer1 network.

This method could provide a more flexible payment mechanism by allowing L2 networks to participate in this aggregation layer. Buterin noted that currently these L2s prefer to pay only a fixed fee per transaction.

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