The number on the promotion page is the end of a calculation, not the start
A weekly bonus looks like a single figure in a notification or an email, but it is assembled from several separate pieces: how much you wagered, which games you played, what the operator's promotional formula says, and the conditions attached to the credit. The calculation that matters most to you is not the headline amount. It is what that amount becomes after the wagering requirement, game weighting, cashout cap and expiry window are applied.
Most weekly bonuses at online casinos are a form of cashback, a reload match, or a loyalty-linked credit. The operator takes a measure of your activity over the previous seven days, applies a formula, and posts a promotional balance to your account. That balance is usually not withdrawable money. It is bonus funds with a set of rules that determine whether any of it can ever leave the account as cash.
What the operator is measuring
When a casino calculates a weekly bonus, it is not rewarding you for winning or losing. It is rewarding the volume of play you generated, because that volume is what produces the house's expected revenue. The industry term for this is theoretical loss, and it is a simple multiplication the operator can run on any tracked session.
The formula uses three inputs: your average bet size, the number of decisions you make per hour, and the house edge of the specific game you are playing. Suppose, purely as an example, you play a game with a house edge of two percent, betting ten units per round and completing sixty rounds in an hour. Your expected loss for that hour is ten multiplied by sixty, then multiplied by two percent, which comes to twelve units. That is not what you lost. It is the long-run average the mathematics predicts for that volume of play.
The operator tracks this across your whole week. A weekly bonus is often a percentage of that theoretical loss figure, or a percentage of your total wagered amount, or a tiered reward based on accumulated points. The exact formula is set by the operator and printed in the promotion's terms. What stays constant across almost every operator is that the bonus is tied to tracked play, not to your result.
How the bonus amount is typically derived
There is no universal weekly bonus formula. One operator might return a small fraction of your total coin-in as a cashback credit. Another might award a fixed match on your first deposit of the week. A third might convert loyalty points earned during the week into bonus funds at a set exchange rate. The key document is the promotion's own terms page, which should state the qualifying period, the games that count, and the formula used.
What you can evaluate before opting in is the structure. A weekly bonus is worth less than its headline amount whenever the conditions attached to it are expensive to satisfy. The three conditions that matter most are the wagering requirement, the game weighting, and the maximum cashout cap.
Wagering requirements and game weighting
A wagering requirement, also called playthrough, is a multiplier stating how much must be wagered before bonus-related funds can be withdrawn. The arithmetic is straightforward in principle: a thirty-times requirement on a fifty-unit bonus means fifteen hundred units must be wagered. In practice, the calculation is complicated by game weighting.
Game weighting changes how much each wager counts toward the requirement. A slot wager might count in full, while a table game wager might count at a reduced rate, or not at all. This matters because the house edge on the games you are allowed to play determines how much of the bonus is likely to survive the playthrough. A wagering requirement is not a hurdle you clear and then collect. It is a period during which you are placing additional wagers, and every wager carries the house edge of the game you are playing.
Here is how the pieces interact.
| Condition | What it does | Where the number is stated |
|---|---|---|
| Wagering requirement | Multiplies the bonus amount to set a total wagering target | Promotion terms page |
| Game weighting | Adjusts how much each wager counts toward the target, by game type | Promotion terms or bonus policy |
| Maximum cashout cap | Limits how much of the remaining balance can be withdrawn | Promotion terms page |
| Expiry window | Sets the time allowed to meet the requirement before the bonus is removed | Promotion terms or account bonus screen |
The wagering requirement and the game weighting are best read together. A low multiplier on games that contribute little is more demanding than a higher multiplier on games that contribute in full. The only way to compare two weekly bonuses accurately is to read both numbers for each offer.
Maximum cashout caps and expiry windows
A maximum cashout cap is a ceiling on how much of the bonus-derived balance can ever be converted to withdrawable cash. If a weekly bonus carries a cap, any balance above that cap is removed when you request a withdrawal. The cap is stated in the promotion terms, and it should be read before you opt in, because it changes what the bonus is worth.
The expiry window works differently. It is a deadline. If the wagering requirement is not met before the window closes, the bonus funds and any winnings generated from them are typically removed from the account. Expiry windows are usually short for weekly bonuses, because the promotion is designed around a seven-day cycle. The exact window is printed in the terms, and the account bonus screen usually shows the remaining time.
These two conditions combine in a specific way. A bonus with a high wagering requirement and a short expiry window is difficult to complete. A bonus with a low cashout cap is easy to complete but returns little. Neither condition is inherently good or bad; they change the shape of the offer, and the only reliable way to evaluate them is to read the numbers the operator has published for that specific promotion.
Loyalty programmes and weekly bonuses
Some weekly bonuses are not standalone promotions. They are the weekly settlement of a loyalty or comp programme. In that structure, your play earns points or tier credits during the week, and the weekly bonus is the conversion of those points into a promotional balance.
The underlying calculation is still theoretical loss. A comp programme is designed to return a fraction of the expected value of your play, not a fraction of your actual result. The operator estimates your theoretical loss using the same three inputs: average bet, decisions per hour, and house edge. It then returns a portion of that estimate as points, credits, or a direct weekly bonus.
This is why two players with the same result can receive different weekly bonuses. One played a game with a higher house edge, or played more hands per hour, or bet larger amounts. Their theoretical loss was higher, so the programme's formula produced a larger reward. The actual outcome of the session does not drive the calculation.
Loyalty programmes also have terms that change the value of the weekly credit. Points may expire, conversion rates may vary by tier, and the credited amount may be subject to its own wagering requirement before it can be withdrawn. The programme's terms page is the document that carries these numbers.
What the player controls
You do not control the formula the operator uses to calculate the weekly bonus. You do control whether you opt in, and you control the games you play while the bonus is active.
Before opting in, read the promotion terms and write down four numbers: the wagering requirement, the game weighting for the games you play, the maximum cashout cap, and the expiry window. Then ask one question: given the house edge of the games I would play to clear this bonus, what is my expected loss over the required wagering volume? That expected loss is the real cost of the bonus. If it is larger than the amount the bonus can realistically return after the cap, the promotion is not worth taking.
No betting pattern changes the house edge of the games you play to clear the bonus. The wagering requirement is a volume target, and every unit of volume carries the same built-in edge. A weekly bonus changes the timing and the amount of your play; it does not change the mathematics of the games themselves.
FAQ
Why did my weekly bonus amount change from last week?
The formula stayed the same; your inputs changed. If you wagered less, played games with a lower house edge, or made fewer decisions per hour, your tracked theoretical loss was lower, and the bonus calculation produced a smaller credit. Check the promotion terms to see which inputs the formula uses.
Can I withdraw the weekly bonus immediately?
Usually not. Weekly bonuses are normally credited as bonus funds, which means they are subject to a wagering requirement before any part of them becomes withdrawable. The requirement, the game weighting, and any cashout cap are stated in the promotion terms.
Do all games count equally toward the weekly bonus requirement?
No. Most operators apply game weighting, which means wagers on some games contribute fully to the requirement while wagers on others contribute at a reduced rate or not at all. The weighting table is part of the promotion terms, and it should be read before you start playing.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.