Tron Fee Limit (2024)

It is highly recommended to set an appropriate fee limit before deploying/triggering a contract to Mainnet. The fee limit refers to the upper limit of the smart contract deploy/execution cost, in TRX.

Measured in SUN.
The maximum limit is 1000 TRX, or 1e9 SUN.
Fee limit include both caller's energy by freezing and burning TRX.
Fee limit not include energy contributed by contract creator.
More details and out of energy solution in tron-developer-guide-energy-consumption-mechanism.

Fee Limit Calculator

Visual
Coding

<?php use IEXBase\TronAPI\Tron;use IEXBase\TronAPI\Support;define("TRX_TO_SUN",'1000000');define("SUN_TO_TRX", '0.000001');include_once "../libraries/vendor/autoload.php";include_once("html_iframe_header.php");include_once("tron_utils.php");$supportChains = ['main'=>"Tron Mainnet", 'shasta'=>"Shasta Testnet"];if ($_SERVER['REQUEST_METHOD'] == 'POST') { try {if ($_POST['chain'] == 'main') {$fullNode = new \IEXBase\TronAPI\Provider\HttpProvider('https://api.trongrid.io');$solidityNode = new \IEXBase\TronAPI\Provider\HttpProvider('https://api.trongrid.io');$eventServer = new \IEXBase\TronAPI\Provider\HttpProvider('https://api.trongrid.io');} else {$fullNode = new \IEXBase\TronAPI\Provider\HttpProvider('https://api.shasta.trongrid.io');$solidityNode = new \IEXBase\TronAPI\Provider\HttpProvider('https://api.shasta.trongrid.io');$eventServer = new \IEXBase\TronAPI\Provider\HttpProvider('https://api.shasta.trongrid.io');}$tron = new \IEXBase\TronAPI\Tron($fullNode, $solidityNode, $eventServer);$result = $tron->getAccountResources($_POST['address']);$trxBalance = (string)$tron->getBalance($_POST['address']);$chainParams = $tron->getManager()->request("wallet/getchainparameters", [], "get"); $energyFeeForBurnTrx = (string)getChainParamValue($chainParams['chainParameter'], $key = "getEnergyFee");$energyByBurnTrx = bcdiv($trxBalance, $energyFeeForBurnTrx);$consumeEnergy = $_POST['consume_energy'];$userFeePercentage = 100;if (ctype_digit($_POST['contract_fee_percentage'])) {$userFeePercentage = 100 - (int)$_POST['contract_fee_percentage'];$consumeEnergy = bcmul($consumeEnergy, (string)($userFeePercentage / 100));} $estFeeLimit = bcmul($consumeEnergy, $energyFeeForBurnTrx );$estFeeLimit = bcmul($estFeeLimit, SUN_TO_TRX, 6); ?><h6 class="mt-3">Account Energy</h6><table class='table table-bordered table-sm' ><tr><td style="width:30%;">Account Energy From Freezing TRX:</td><td><?php echo $energyByFreezeTRX = (string)(int)$result['EnergyLimit']?></td></tr><tr><td>Account Energy Used:</td><td><?php echo $energyUsedByFreezeTRX = (string)(int)$result['EnergyUsed']?></td></tr><tr><td></td><td><b><?php echo $remainingEnergyByFreezeTRX = bcsub($energyByFreezeTRX, $energyUsedByFreezeTRX)?></b></td></tr><tr><td>Energy By Burning All <?php echo bcmul($trxBalance, SUN_TO_TRX,6)?> TRX:</td><td><b><?php echo $energyByBurnTrx?></b></td></tr><tr style='font-weight:bold;background-color:#FFFFCC;'><td>Account Remaining Energy:</td><td><?php echo $accountEnergy = bcadd($remainingEnergyByFreezeTRX, $energyByBurnTrx)?></td></tr></table><?phpif(bccomp($accountEnergy, $consumeEnergy) >= 0) {$isEnergySufficient = "YES";} else {$isEnergySufficient = "NO";}?><h6 class="mt-3">Fee Limit Estimation</h6><table class='table table-bordered table-sm' ><tr><td style="width:30%;">Energy Consumption Ratio:</td><td>Contract Creator: <?php echo (int)$_POST['contract_fee_percentage']?>%, Caller: <?php echo $userFeePercentage?>%</td></tr><tr><td style="width:30%;">Fee Limit Estimation:</td><td><?php echo $estFeeLimit?> TRX</td></tr><tr><td style="width:30%;">Energy Of Fee Limit:</td><td><?php echo $consumeEnergy?> Energy</td></tr><tr><td style="width:30%;">Is Energy Sufficient:</td><td><?php echo $isEnergySufficient?></td></tr></table><?php } catch (Exception $e) { $errmsg .= "Problem found. " . $e->getMessage(); }} if ($errmsg) {?> <div class="alert alert-danger"> <strong>Error!</strong> <?php echo $errmsg?> </div><?php}?><form action='' method='post'><div class="form-group"><label for="chain">Chain *:</label><select id="chain" name="chain" class="form-control" ><?phpforeach($supportChains as $k=>$v) {echo "<option value='{$k}'".($k == $_POST['chain'] ? " selected": "").">{$v}</option>";}?></select></div> <div class="form-group"> <label for="address">Address *:</label> <input class="form-control" type='text' name='address' id='address' value='<?php echo $_POST['address']?>'> </div><div class="form-group"><label for="consume_energy">Consume Energy By Deploy Or Trigger Contract *:</label><div class="input-group mb-3"><input class="form-control" type='text' name='consume_energy' id='consume_energy' value='<?php echo $_POST['consume_energy']?>'><div class="input-group-append"><span class="input-group-text">Energy</span></div></div><small>For example, assume contract last execution consumes 18000 Energy, so estimate this time will consume 20000 Energy.</small></div><div class="form-group"><label for="contract_fee_percentage">Contract Creator Proportion Of Energy Consumption %:</label><div class="input-group mb-3"><input class="form-control" type='text' name='contract_fee_percentage' id='contract_fee_percentage' value='<?php echo $_POST['contract_fee_percentage']?>'><div class="input-group-append"><span class="input-group-text">%, [0,100]</span></div></div><small>Put blank means caller takes 100% of energy consumption. This field assumes that contract creator has enough energy.</small></div> <input type='submit' class="btn btn-success btn-block"/></form><?phpinclude_once("html_iframe_footer.php");

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