Bitcoin fee market pressure
One year of fee-market health: how much of miner revenue fees cover, how full blocks are running, and how big the pending backlog is. For the long-term fee history back to 2013, see Transaction Fees.
Why the fee market matters
Bitcoin blocks are capped in size, so block space is a genuinely scarce commodity sold at auction. Users bid fees to get included in the next block, and miners take the highest bids. That auction is the fee market, and it is the clearest real-time read on demand for settlement on the network.
It also matters for a reason that reaches decades out. The block subsidy — the newly issued bitcoin paid to miners — halves roughly every four years and eventually goes to zero. At that point fees are the entire mining incentive. Watching what share of miner revenue fees already cover is the closest available evidence on whether that transition is on track.
The three measures shown here
Fee dominanceis fees as a percentage of total miner revenue. In ordinary conditions this sits in the low single digits; during congestion it has briefly exceeded half of all miner income. It is the metric that speaks to Bitcoin's long-term security budget, and the one that moves least on daily noise.
Block weight utilization is how full blocks are running against the protocol limit. Sustained readings near capacity mean the auction is genuinely competitive and fees will stay elevated. Readings well below capacity mean spare room, and fees fall toward the minimum relay rate regardless of what price is doing.
Mempool sizeis the backlog of transactions that have been broadcast but not yet confirmed, measured in virtual megabytes. It is the leading edge of the other two: the backlog builds before fee dominance rises, and drains before it falls. A large mempool means a transaction sent at yesterday's fee rate may wait hours or days.
What drives fee spikes
Fee pressure has three common causes and they look different on these charts. Ordinary bull-market demand raises all three measures together over weeks. Non-monetary uses of block space — inscriptions and token protocols that embed data in transactions — can saturate blocks and drive fee dominance to extremes while address activity stays flat. And a run of slow blocks from ordinary mining variance can build a temporary backlog that clears within a day. Distinguishing these matters: only the first is evidence about demand for Bitcoin as money.
Common questions
Do I need an account to see the charts?
Yes, and it is free — no card required. Every metric on this page is explained in full above the sign-in prompt; the live charts are what require an account.
What is a normal Bitcoin transaction fee?
There is no fixed number — fees are set by an auction for limited block space, so the going rate depends entirely on current demand. In quiet periods it can be a few cents; during heavy congestion the same transaction can cost tens of dollars.
What is the mempool?
The mempool is each node's holding area for transactions that have been broadcast to the network but not yet included in a block. A growing mempool means more transactions are arriving than blocks can clear, which pushes fee rates up.
How is this different from the Transaction Fees page?
This page shows one rolling year across three measures of current pressure. The Transaction Fees page shows a single measure — the average fee — going back to 2013, for long-run historical context.
Related on Alphabit
- Transaction fees since 2013 — the full-history fee chart
- Bitcoin network activity — hash rate, addresses, throughput
- Lightning Network adoption — the main off-chain response to fee pressure
- On-chain overview dashboard — every on-chain indicator on one page
Data is provided for research and education. Nothing here is financial advice — see the disclosure.