Introduction
If you develop smart contracts on the TON blockchain—or plan to do so—you should understand the storage fee mechanism because it affects much more than just the cost of storing data.
Storage fees influence transaction execution, account status transitions, contract balances, and even the values visible inside the Compute phase. At first glance, storage fees may seem like a minor detail, but they can have important side effects that affect smart contract logic.
For example:
msg_value visible inside TVM may differ from the original incoming message value;
