Rebase Token

A rebase token is a cryptocurrency whose total supply is automatically adjusted — expanded or contracted — at regular intervals by the protocol’s smart contract, in a way that changes every holder’s balance proportionally. Rather than the price moving to reflect supply and demand, the supply itself shifts so that the price trends toward a target. If the price is too high, new tokens are minted into all wallets to push it back down; if it is too low, tokens are removed from all wallets to push it back up.

Imagine you hold 100 rebase tokens and the protocol decides to increase supply by 10%. You suddenly have 110 tokens. Your proportional share of the total supply has not changed — everyone got 10% more — but your raw token count has. Whether you are richer or poorer depends on whether the price adjusted as the protocol intended. In theory, your purchasing power stays constant; in practice, rebases interact with market psychology in complex and often volatile ways.

Rebase tokens are often used in attempts to build elastic supply currencies or yield-bearing assets where the yield is expressed as additional tokens rather than a rising price. They became famous during the early 2021 period of experimental DeFi protocols. The main risk for holders is not understanding how their wallet balance changes constantly, and confusion can arise when tokens are staked in other protocols that may not handle rebases cleanly. Ampleforth (AMPL) is the most well-known example.

Example: Imagine a pizza that magically resizes itself to keep each slice worth exactly $5. If the pizza gets more popular and slices would be worth $7, it spontaneously grows more slices so each one is back to $5. If nobody wants it and slices would be worth $3, some slices disappear. Your number of slices changes, but in theory each remaining slice holds its value — though in practice the magic does not always work perfectly.