TRON bandwidth
Definition of TRON bandwidth: the resource that pays for transaction size, read as BandwidthLimit versus BandwidthUsed, separate from energy.
Definition
TRON bandwidth is the resource that covers the byte size of a transaction. Native TRX transfers live here. Contract calls still consume some bandwidth for their envelope even when energy is the expensive meter.
Bandwidth is not energy. Filling only bandwidth will not fund a USDT TRC20 send. Filling only energy will not reliably fund a burst of native TRX transfers.
How it appears on-chain
getaccountresource returns BandwidthLimit and BandwidthUsed (older docs may say net). Remaining bandwidth is the difference. Accounts also receive a regenerating free quota that is easy to exhaust with dust.
When remaining bandwidth cannot cover the bytes, TRON burns TRX as NetFee. That burn is the bandwidth analogue of an energy burn, and explorers list it as a network fee.
How this checker shows it
The bandwidth checker reads those public fields on a pasted T-address. It will not tell you the exact byte size of an unsigned tx in your wallet. It will tell you whether the tank looks empty before you blame energy for a TRX-only failure.
TronLink’s resource tab shows the same split. Match both views. A screenshot in a chat is not a node response.
Common confusion
Support scams tell USDT users they lack bandwidth because it is an easier word to sell a rental around. Check energy for USDT. Check bandwidth for native TRX and for mystery NetFee.
Staking without choosing the resource type is the other mix-up. A freeze aimed at energy does not mint BandwidthLimit.
Related mechanics
Energy is contract compute. Freeze/stake can target bandwidth instead of energy. Delegation can also target bandwidth — confirm the type if you rented. Burning TRX as NetFee is what this glossary exists to name.
Independent desk. No seed phrases. Optional deep scan is read-only, about 2–3 TRX. Help: @wholetron.
FAQ
What is TRON bandwidth?
The resource that pays for transaction bytes, measured as BandwidthLimit versus BandwidthUsed.
Is bandwidth the same as energy?
No. Bandwidth is size. Energy is smart-contract compute.
What is NetFee?
TRX burned when bandwidth is insufficient to cover transaction size.
Does USDT need bandwidth?
A little, for the envelope. The large cost is energy.
How do I raise bandwidth?
Stake or freeze TRX for bandwidth, or wait for free daily bandwidth to regenerate.
Can bandwidth be delegated?
Yes. Confirm the resource type. A bandwidth delegation will not cover a USDT contract’s energy need.
Do I need a seed to check bandwidth?
No. Paste the public T-address.