Account Protection: Buying Power and Leverage Settings
Each linked account has two settings that shape how much of the account your bots can use: a buying power ceiling and a leverage sizing percentage.
Where to find them
Open Manage Linked Brokers and look at the Manage Linked Accounts table. Every open account has two dropdowns, each set from 0% to 100% in 10% steps:
- Don't Open Bot Trades When BP Used Exceeds
- Account % for Leverage Calculations
Changes save as soon as you pick a new value.
The buying power ceiling
Don't Open Bot Trades When BP Used Exceeds sets a threshold for the account's buying power usage. When the buying power already in use goes above your chosen percentage, bots stop opening new trades on that account until usage falls back under the line. Existing trades still get managed and closed normally; only new entries are held back.
Set the dropdown to Disabled if you do not want any ceiling.
The leverage sizing percentage
Account % for Leverage Calculations sets the portion of the account's total value that is used when a bot sizes its trades with the leverage quantity setting. At 100%, leverage sizing sees the whole account. At 50%, a leverage-sized bot behaves as if the account were half its actual size, cutting its computed quantities accordingly.
This is a clean way to run leverage-sized bots on only part of an account, for example when the same account also holds long-term positions you do not want counted. How leverage sizing itself works is covered in Position Sizing: Quantity, Percent, Leverage, and Dollar Target.
How the two work together
The leverage percentage shapes how big new trades are sized; the buying power ceiling decides whether new trades open at all. Many users set the leverage percentage to match the share of the account they trade, then add a buying power ceiling a notch or two higher as a backstop for busy days.