Account Protection: Buying Power and Leverage Settings

Last updated July 3, 2026

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.

An account row showing the two protection dropdowns, with the buying power ceiling set to 70 percent and the leverage percentage set to 50 percent
The two per-account protections: a buying power ceiling for new trades and the account share used by leverage sizing.

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.

  The threshold counts all buying power used on the account, not just the trades tradeSteward opened. Manual positions you put on at your broker count against the same ceiling.

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.