Internal transfer
An internal transfer moves assets between accounts inside the same exchange, instantly and without network fees. It is how UID-based rebate payouts are delivered — USDT arrives in your exchange account with nothing to claim.
Exchanges settle transfers between their own users on their internal ledger rather than on a blockchain: no network confirmation, no gas or withdrawal fee, and effectively instant credit. The rails exist for users moving funds between their own sub-accounts or to other users of the venue.
For rebate payouts the mechanism is ideal. A platform that knows your UID can send your settled payback as an internal transfer — the USDT lands directly in your spot or funding balance, spendable immediately, with no address to paste and no on-chain cost eating into small daily amounts. This is what makes fine-grained daily settlement economical; paying daily via on-chain withdrawals would burn a meaningful share of the value in network fees.
The delivery detail is worth checking on any rebate service: payouts to your exchange UID via internal transfer keep the loop non-custodial, whereas services that require you to accumulate a balance on their own site and withdraw from it have taken custody of your money in the meantime.
How payouts reach your account →