Bitcoin just got hit with one of the most controversial proposals in its history, and it’s coming from inside the house.

On September 3, 2026, veteran Bitcoin protocol developer Peter Todd publicly argued for a code-level tax on Bitcoin addresses during a speech at the bitcoin++ conference in Toronto late last month. The proposal? A demurrage fee, effectively a straight tax for just holding Bitcoin, that would charge roughly 0.1% annually on every address.

And here’s the kicker: Todd says this can be implemented as a soft fork. No hard fork. No community-wide vote. Just a protocol-level change that could be activated by miners and node operators.

The Tax That Changes Everything

Let me break down what Todd is actually proposing.

Bitcoin’s current monetary policy is simple: 21 million coins, total. New coins are issued as block rewards until approximately 2140. After that, miners survive on transaction fees alone. Todd’s argument is that fees won’t be enough. The network will become insecure. Miners will leave. And Bitcoin will collapse under its own weight.

His solution? A tail emission, roughly 0.25 BTC per block starting around 2040, combined with burning transaction fees. The demurrage tax on holders would fund this ongoing issuance.

In Todd’s own words, the chances of a hard fork change to Bitcoin’s distribution are “close to nil,” so he proposed this as a soft fork alternative. That means it wouldn’t require the kind of supermajority consensus that hard forks demand. It could slip through with miner signaling alone.

The Community Erupts

The reaction has been swift, and brutal.

Critics are calling it the death of Bitcoin’s hardest property: its fixed supply. If a 0.1% tax can be added today, what stops a 1% tax tomorrow? What stops developers from adjusting the monetary policy whenever they feel like it?

I think the critics have a point here, once you break the principle that the supply cap is inviolable, you’ve opened a door that can never be fully closed. Todd’s proposal “might be” well-intentioned, but the precedent it sets is terrifying.

Others have pointed out the practical absurdity: a tax on every address means tracking every UTXO, calculating balances continuously, and burning coins that don’t move. That’s not just a monetary policy change, it’s a fundamental redesign of how Bitcoin tracks ownership. Are you paying attention?

Why This Matters Now

What makes this proposal particularly dangerous is the timing.

The broader Bitcoin development community is already fractured after the BIP-110 debacle, where a minority faction tried to fork the chain with just 2.53% miner support. Luke Dashjr was removed from his BIP editor position. The governance model is under strain.

Into this chaos steps Peter Todd, a developer with a history of controversial takes. He’s not some random Twitter troll. He’s a core protocol contributor, as Luke Dashjr used to be…

And that’s exactly why this proposal is so dangerous.

The Soft Fork Loophole

Here’s what keeps me thinking: Todd explicitly framed this as a soft fork.

Soft forks are supposed to be backward-compatible upgrades that tighten rules without breaking existing nodes. They’re how SegWit was activated. They’re how Taproot was activated. They’re the safe, consensus-driven path forward.

But a tax on holding Bitcoin isn’t a tightening of rules, it’s a fundamental change to the economic model. Calling it a soft fork feels like a rhetorical trick designed to bypass the kind of scrutiny that a hard fork would attract. Wouldn’t you agree?

If this precedent stands, then any future developer with a compelling argument could use the same playbook. “It’s just a soft fork,” they’ll say. “It’s backward-compatible.” And before we know it, Bitcoin’s monetary policy has been rewritten through the back door.

The Bigger Picture

This isn’t really about a 0.1% tax. It’s about who gets to decide Bitcoin’s future.

Todd’s proposal is intellectually honest in one respect: he’s identified a real problem. After the last block is mined, will transaction fees alone be enough to secure the network? It’s a legitimate question that deserves serious consideration.

But the answer can’t be a unilateral soft fork that changes the supply cap without broad consensus. That’s not governance, that’s a coup.

Bitcoin’s strength has always been its immutability. The rules don’t change unless almost everyone agrees. That’s what makes it different from fiat currency. That’s what makes it different from Ethereum. That’s what makes it Bitcoin.

And if we lose that, we lose everything.

Summary

Peter Todd’s proposal for a 0.1% annual demurrage tax on Bitcoin addresses, framed as a soft fork, has ignited one of the most contentious debates in Bitcoin’s recent history.

The proposal aims to address long-term network security by introducing a tail emission of roughly 0.25 BTC per block starting around 2040, funded by a tax on holders. But critics argue it would destroy Bitcoin’s fixed supply cap, set a dangerous precedent for monetary policy changes, and bypass the consensus requirements that have historically protected the network.

The debate is unfolding against a backdrop of governance turmoil, including the failed BIP-110 fork and the removal of Luke Dashjr from his editorial position. Into this volatile environment, Todd’s proposal has landed like a grenade.

The question isn’t whether the proposal will pass, it almost certainly won’t, at least not in its current form. The question is whether the principle of an inviolable supply cap can survive the attempt. And that’s a question that goes to the very heart of what Bitcoin is.

What are your thoughts?