The end of a week
Every book runs on a cycle. Bets are taken all week, results come in, and at some fixed point the week closes and the numbers are settled. That closing is the settlement, and it is the moment a book either works or does not.
The mechanics are simpler than people expect. What makes it hard is doing it on the same day, every week, without exceptions.
Graded, and why it is the word that matters
A bet is graded when the event has been decided and the bet has been settled one way or the other. Won, lost, or pushed.
A push is a tie against the number: the stake goes back and it counts as neither a win nor a loss. It is still a graded bet, which sounds like a technicality and is not. Grading is the event that moves a bet out of "open" and into the week's figures.
Bets that have not finished do not go anywhere. They stay open and carry into the next week. That is why the money that came through your book in a week and the number you settle on are two different figures, and confusing them is how an operator convinces themselves they had a better week than they had.
What the sheet says
At the close, the figures collapse into one line per player: what they wagered, what was graded, what they won or lost, and where their balance stands.
That last number is the only one that gets paid. Players who are down settle with you. Players who are up get paid by you. And the figure is per player, not per bet, which is the whole point of a settlement: nobody argues about individual games on Monday if the week's line is clear.
If you carry sub-agents, the same thing happens one level down. Each sub-agent settles with their own players and then settles with you, and each level only sees its own tree. Agent management covers how that structure works.
Regulated books have to publish this. You should write it down anyway.
A licensed book does not get to be vague about it. Nevada's Regulation 22.150 requires one to adopt and conspicuously display written house rules covering the amounts to be paid on winning wagers, the effect of schedule changes, and the redemption period for winning tickets.
A private book has no regulator asking for that. The questions do not go away: what happens when a game is postponed, how long a player has to collect, what you do about an obvious pricing error. Operators who have written answers have short conversations. Operators who decide each case as it arrives have long ones, and the player always remembers the ruling that went against them.
Why the day never moves
Settlement day is a fixed day, and which day you pick matters far less than never moving it.
A day that slips teaches players it can slip. Then a balance rides a week, then two, and the amount gets big enough that the player starts avoiding you. Almost every serious loss in a small book starts as a small balance that was allowed to age.
Chase on the day. Cut early rather than late. It is not aggressive, it is the thing that keeps the book solvent, and the players who intend to pay do not mind it at all.
The same week bills you
Your software cost is worked out from the same event that fills your settlement figures. A player is billable in a week if at least one of their bets was graded in it. Someone who logged in and did not bet is not billable, and neither is someone who deposited and sat on it.
That is $8 per active player per week on Standard and $11 on Pro, with live dealer casino at $13 on top if you take it. What the bill is made of goes through it in detail and the rate card has the full set.
The reason to line the two up is that your cost and your revenue then move together. A quiet week costs less. A busy week costs more and earned more. How bookies make money explains why a fee that scales with players rather than with the size of the action is the easier one to plan against, and how bookies work covers the rest of the week that leads up to this.