Prop Shield daily reset: how the daily loss limit is calculated
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In a prop challenge, the daily loss limit resets at the start of every trading day — and that reset causes most calculation errors. Here is how it works and how to avoid an accidental breach.
Two numbers decide a prop challenge: the total drawdown limit and the daily loss limit. The difference is one word — reset. The total limit stays fixed from start to finish, while the daily limit is reset at the start of each trading day. The Prop Shield daily reset is exactly where most traders breach a rule without realising it.
When exactly does the Prop Shield daily reset happen?
A trading day starts at the broker server time, not your local clock. If you trade at 23:30 local time while the server has already rolled to the next day, your trade may be booked into the following trading day. Prop Shield calculates on server time because the challenge rules are written on that basis.
Equity or balance?
| Basis | What it measures | Effect on the reset |
|---|---|---|
| Start-of-day balance | Closed balance at day start | Open trades do not move the limit |
| Intraday equity | Balance plus floating profit or loss | Floating loss counts against the limit |
Most challenges calculate the daily limit on equity, which means an open losing trade consumes part of the limit before it is closed. Read the exact basis of your challenge before configuring the shield.
Three common mistakes on volatile days
- Leaving a trade open across the reset: the floating loss is measured against the new day’s fresh limit and may consume most of it immediately.
- Calculating in local time: the gap between local and server time can be a large part of a trading day.
- Ignoring commission and swap: costs are applied on close and can shift the limit.
Using Prop Shield correctly
- Set the warning threshold below the cap: a safety buffer gives room to correct.
- Pre-calculate each trade’s stop: the daily limit caps the sum of small losses, not one large stop.
- Limit trade count: three or four controlled trades beat ten reactive ones.
- Log every breach: record the cause in your journal so it does not repeat.
Calculating the daily cap: a worked example
Take a $100,000 challenge with a 5% daily loss limit, measured on equity, with a server day ending at 00:00. The cap is $5,000. If you open a trade at 23:40 with a $1,200 floating loss, that loss already counts against the current day; after the reset, the new day begins with a fresh $5,000 limit but from a lower equity base. If instead you carry the position through the reset, the same $1,200 is measured against the new day. Either way the arithmetic is identical — what changes is which day absorbs the loss, and that difference decides whether a warning turns into a breach.
Frequently asked questions
Does the daily reset also reset the total drawdown limit?
No. The total limit is fixed; the reset only affects the daily limit. Breaching the total limit ends the challenge.
What if I close a trade before the reset?
The realised loss is booked to that day and the new day starts with a fresh limit, but the reduced balance leaves you closer to the total limit.
Does Prop Shield replace a stop-loss?
No. The shield is a structural protection layer and does not replace per-trade stops. See Prop Shield vs stop-loss.
How do I know how much of the daily cap is used?
The Prop Shield panel shows equity status and distance to the daily cap; check it several times during volatile sessions.
The bottom line
The Prop Shield daily reset is a simple rule with a large effect: new day, new limit. Understand server time, the calculation basis and the effect of open trades, and most accidental breaches disappear. Full guide: Prop Shield help center.
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