The daily close recomputes your account. The closeout writes it down

The floor arithmetic is one subtraction: highest settled close minus the trail amount, the fixed distance the firm sets, $2,000 in the worked example below. Settle at $51,500 on that trail and the line sits at $49,500 tonight, whatever your equity did intraday. The floor only rises: a new settled high resets the room below the close to exactly the trail amount, so profit never widens it, and a losing day leaves the floor where it was, so the room shrinks by the loss.

Where the floor stops ratcheting is a per-firm, per-phase published fact: some firms lock it at the starting balance, some $100 above it, one publishes that its evaluation floors never lock at all, and on one the lock level is not published anywhere. Enforcement timing is a separate fact from ratchet timing: of the eight firms NANO tracks, six publish that the line is checked live against open equity (an open trade dipping through it can end the account between closes) and the other two publish no timing sentence, so the safe read of silence is live enforcement.

The close also moves the gate math. A consistency rule (no single day above a set share of total profit) re-divides at every close because the total just changed. Across the eight firm pages NANO has sourced, breaching that share raises the required total, blocks the payout request, or blocks the evaluation pass; none of them turns it into an account-ending breach. Each qualifying day also advances any minimum-trading-days count. All of it runs on the settled number you log at the closeout, which is why the log has to be right.

The classic corruption is typing a $500 payout into the P&L field as a green day, or an evaluation fee as a red one. The consistency ratio runs on trading P&L only, so the merged entry bends a gate computation, and at firms whose rule measures profit since the last payout, the payout still matters, as a date that resets the denominator, not as a P&L line.

So the closeout keeps four lanes: settled day P&L per account, which feeds the floor, the ratio and the day count; cash movement, payouts received and evaluation, reset or activation charges, the only lane that is real money; rule context, naming which limit the day touched and by how much; and one process line. Four fields, and every downstream computation stays trustworthy.

The tempting close on the example day is a single green +$450 and a shut laptop. The entry that matters is the other one: a stop moved mid-trade, adding $125 of planned risk before the exit. A rule break that pays trains the exact behaviour that later meets the $49,500 line, and it produces no pain to remember itself by, which is why it gets written down tonight, while the number is visible.

One line carries it: action, reason, dollar change, "Moved the NQ stop, believed the level would hold, +$125 planned risk." If the line names a deeper problem, book the review for after the close; the mid-session repair is how one breach becomes two. Edit tomorrow's plan only once today is logged.