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Risk & safety · updated 2026

On this page

  • How to set a limit
  • The two actions
  • What the limit is checked against

Daily loss limits and profit targets

Every account — leader or follower — can carry its own Daily loss limit (DLL) and Daily profit target (DPT) on the Risk Management page. Each limit is a dollar amount plus an action. The loss limit fires when the account's day P&L falls to minus that amount; the profit target fires when it reaches plus that amount.

How to set a limit

  1. Open Risk Management. The Account limits table lists every known account, leaders pinned on top with a LEADER badge.
  2. Find the account. Use the "Search accounts…" box if the list is long.
  3. Type a dollar amount into Daily loss limit (DLL) or Daily profit target (DPT). Blank means no limit. A limit must be a number above zero — the form highlights anything else and refuses to save.
  4. Pick the action next to it: Flatten & lock or Alert only.
  5. Click Save limits. The toast "Risk limits saved." confirms it. Saving the form never unlocks a locked account — unlocking is always a separate, explicit switch.

The two actions

Flatten & lock locks the account first, then closes its positions, cancels its resting orders, and keeps re-sweeping until the account is flat. Locking first matters: no new copy can land on the account while its positions are being closed, and cancelling the resting orders means a late fill cannot re-open it. The account stays locked for the rest of the trading day — see risk locks and the daily reset.

Alert only notifies you through the alerts bell and does nothing else. The account keeps copying. Use it when you want a warning line, not an automatic exit.

What the limit is checked against

Limits are checked against the account's live day P&L as your broker reports it, which already includes open P&L. There is no separate "realized only" mode — the number the limit watches is the same day P&L your broker shows.

One deliberate boundary: if a broker reports no P&L for an account, the limit never fires. Missing data is never treated as zero. A limit that cannot be evaluated does not act — and does not silently count as satisfied either. If your broker's feed does not publish day P&L, this protection is not available for that account, and you should size your own backstop accordingly.

A MirrorFill limit is software on top of your account — it closes positions with ordinary orders, which need a live session and an open market. It is a strong backstop, not a replacement for your prop firm's own risk settings.

Quick answers

Can I set a limit on the leader account?

Yes. A leader that breaches its limit acts as a kill switch for its whole group — the group flattens and stops copying until you press Resume. Other groups keep running.

What does a blank field mean?

No limit. Only accounts with a number set are watched.

Does "Flatten & lock" cancel working orders too?

Yes. It locks the account, closes its positions, and cancels its resting orders, so a late fill cannot land on a locked account.

Next steps

Risk locks and the daily reset · The Flatten all kill switch · Sizing for trailing drawdown

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© 2026 MirrorFill. Operated from the European Union. Trading futures involves substantial risk of loss and is not suitable for every investor. MirrorFill is a trade-copying tool, not a broker, financial adviser, or signal provider.