Fee Economics
Median total fees per block (BTC) and fees compared to the block subsidy (basis points), tracking the shift from a subsidy-funded to a fee-funded security model. Real blockchain data.
What is it?
Fee Economics tracks two measures of Bitcoin's long-term viability. v1 is the 24h median of the total fees paid in each block (in BTC): what blocks typically pay miners in fees, not the fee of a single transaction. v2 compares fees to the block subsidy, in basis points: 100 bps means fees equal to 1% of the subsidy, 10,000 bps fees equal to the subsidy. This ratio is central to Bitcoin's security thesis: as halvings reduce the subsidy, fees must take over to fund the network's security.
How to read
v1 follows block demand: in calm periods, a few hundredths of a BTC in fees per block; during major congestion, several BTC per block (December 2017, May 2023, the 2024 halving day). v2 is the key indicator: below 100 bps, fees weigh less than 1% of the subsidy. Since 2013 its annual median has ranged from a few tens of bps to more than a thousand (2017). Spikes above 7,000 bps during congestion waves (December 2017, May 2023) show that block demand can generate significant fees.
Key zones
Ratio < 100 bps (1%): fees are negligible, security relies almost entirely on the subsidy. Ratio 100-500 bps: transition zone. Ratio > 1,000 bps (10%): fees contribute significantly to security. Ratio > 10,000 bps (100%): fees equal the subsidy, the security model's inflection point, crossed notably on the 2024 halving day. At constant fees, each halving mechanically doubles the ratio.
What to observe
The background trend of the fee-to-subsidy ratio is the most important measure for Bitcoin's long-term thesis. At constant demand the ratio doubles after each halving; if it stagnates or falls despite a halving, block demand has receded. Punctual spikes (Ordinals, congestion) matter less than the background trend.
Historical context
Since 2013 the annual median of the fee-to-subsidy ratio has mostly sat between 50 and 600 bps, with spikes during congestion (December 2017, May 2023) and a record on the 2024 halving day, when fees exceeded the subsidy (close to 30,000 bps). A halving cuts the subsidy in half but does not guarantee a rise: after the 2024 halving, falling fees brought the annual median below 100 bps, a level not seen since 2015. Bitcoin's security thesis relies on the assumption that block demand will be enough to maintain an adequate security budget as the subsidy approaches zero (~2140).
Expert notes
Fee-to-subsidy ratio is sensitive to temporary congestion periods (Ordinals, BRC-20) that artificially inflate fees. Analysis must distinguish the structural component (background trend) from the cyclical component (congestion spikes). The "security budget" question, whether fees will be enough to pay miners as the subsidy trends toward zero, remains open: research has not settled on any minimum reward threshold.
Common mistakes to avoid
v1 is not the fee of a transaction: it is the total fees of a block, as a 24h median. Concluding there is a 'fee problem' from a low ratio in calm periods would be hasty, but a halving does not raise the ratio on its own: it doubles it at constant fees, and falling fees can more than offset that effect. Similarly, Ordinals spikes don't 'solve' the security problem: they show demand potential without guaranteeing its permanence.
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/onchain/metrics/fee-estimator-pro/data?timeframe=90d' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "fee-estimator-pro",
"timeframe": "1y"
}Required tier: performance. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
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Institutional disclaimer
Trinity Insights is an educational and analytical tool. The metric above does not constitute investment advice. Trinity Insights is not a Crypto-Asset Service Provider (CASP) registered under MiCA Regulation (EU) 2023/1114. See the full disclaimer.