On TON, contract storage has an explicit carrying cost. Each cell of state incurs a small ongoing fee, which encourages contracts to keep their data compact and avoid unnecessary long lived entries.

STONfi takes this into account in its pool and farming design. Liquidity positions are tracked through pool shares rather than per position balance copies, and farming contracts store only essential values such as staked shares and accumulated reward indices. This keeps the storage footprint small relative to the amount of activity.

For users and integrators, this means that long term positions on STONfi do not create excessive storage overhead. Even if liquidity stays in a pool or a farming contract for an extended period, the underlying architecture is built to remain efficient within TON’s storage fee model. $GRAM