Stakes and payouts
Every call has a stake. The default is $10. The most Backd sends in one order is $5,000. The smallest depends on the price. If you go under it, Backd tells you the exact figure and sends nothing.
Choosing a stake
The stake box has quick amounts ($5, $10, $25, $50 and $100), a MAX chip for everything in your wallet once your balance is known, and a box for your own figure. Combo slips and Swipe offer $5, $10, $25 and $50 and the same MAX and box. Before you confirm you see the chance, what the stake wins, the profit, what you lose if wrong, and the fee. The order is all or nothing at up to 3% over the price you were shown, so the book can't fill you at anything worse than that.
The smallest stake
Polymarket's order book takes a smallest order of 5 shares on a market. A share costs its price, so the smallest real stake is 5 × the price, or $1 if that is more. Backd works it out from the live price when you back the call, and if your stake is under it you get the exact figure back instead of an order.
| Chance | Smallest stake |
|---|---|
| 10% | $1.00 |
| 25% | $1.25 |
| 50% | $2.50 |
| 75% | $3.75 |
| 90% | $4.50 |
What it pays
A share pays $1 if the outcome happens and nothing if it doesn't. So a call at chance p with stake S buys S ÷ p shares and returns S ÷ p if right. At 58%, $10 returns $17.24. That's $7.24 profit, less the 1% fee.
| Chance | $10 returns | Profit if right | If wrong |
|---|---|---|---|
| 90% | $11.11 | +$1.01 | −$10.00 |
| 75% | $13.33 | +$3.23 | −$10.00 |
| 58% | $17.24 | +$7.14 | −$10.00 |
| 50% | $20.00 | +$9.90 | −$10.00 |
| 33% | $30.30 | +$20.20 | −$10.00 |
| 25% | $40.00 | +$29.90 | −$10.00 |
| 10% | $100.00 | +$89.90 | −$10.00 |
Void markets
If a market is cancelled, or resolves 50/50, shares are redeemed at their 50/50 value or the market's refund rule, whichever Polymarket applies. The call is marked void on your record and doesn't count toward right % or profit.
How stakes show on records
The stake on a real call shows with the call, in feeds, on the call page and on the slip. Profiles show profit in dollars, right %, and ROI (profit ÷ total staked), so a $5 caller and a $500 caller can be compared on judgement, not bankroll. XP is earned per right call from its chance, not its stake, so bigger stakes don't buy XP or a rank.