Why Do Some Cryptocurrencies Have No Maximum Supply?
Not every blockchain caps how many coins can ever exist. Some are deliberately designed to keep issuing new units indefinitely, and that choice reflects a different set of priorities than the fixed-supply model most people associate with crypto.
The short answer
Some cryptocurrencies have no maximum supply because their designers prioritized an ongoing incentive to secure the network over a fixed, scarcity-based issuance schedule. Continuous, typically small, issuance of new coins funds ongoing rewards to the validators or miners who process transactions and maintain the network, rather than relying only on transaction fees once a fixed cap is reached. This is a deliberate design tradeoff, not an oversight, and different networks land on different answers about how much ongoing issuance is appropriate.
Two different design philosophies
Blockchain designers face a real choice about how to fund network security over the long run. A fixed-supply model, like Bitcoin’s, issues new coins on a shrinking schedule until a hard cap is reached, after which security funding must come entirely from transaction fees. An uncapped model instead keeps a small, ongoing issuance permanently in place, which guarantees a baseline reward for participants securing the network regardless of how transaction fee revenue fluctuates. Neither approach is inherently better; they represent different bets about what will most reliably fund security decades into the future.
Why ongoing issuance can support security
- Predictable rewards. A continuous issuance rate gives validators or miners a steady, calculable incentive that doesn’t depend entirely on transaction volume.
- Funding for staking-based networks. Networks that rely heavily on staking to validate transactions often use ongoing issuance to reward participants who lock up coins to help secure the system, since that commitment has its own ongoing cost.
- Flexibility to adjust. Some uncapped designs build in mechanisms to adjust issuance rates over time in response to network conditions, something a hard-capped supply schedule cannot do once it’s set.
The tradeoff: dilution
An uncapped supply means the total number of coins in existence keeps growing, which can dilute the value each existing coin represents unless demand grows at least as fast as new supply. This is a structural feature of the design, not a flaw exclusive to any one network, and it’s part of why comparing how currency volatility is measured against crypto volatility matters when evaluating any of these assets — dilution and volatility are related but distinct concepts that get conflated in casual discussion.
It doesn’t determine value on its own
A capped or uncapped supply schedule is one input into a coin’s economics, not a verdict on its usefulness. Scarcity alone doesn’t guarantee demand, and ongoing issuance doesn’t automatically mean a coin is a poor design; both models exist because their designers made different bets about what best serves network security and long-term participation. Evaluating a specific network’s supply mechanics requires looking at the issuance rate, how it changes over time, and what it’s actually funding, rather than treating “capped” as automatically superior to “uncapped.”
The takeaway
Whether a cryptocurrency has a maximum supply is a deliberate engineering choice about how to fund network security over time, weighing predictable validator rewards against the diluting effect of continuous issuance. Neither approach eliminates the tradeoff; it just decides who bears it and when.