Payouts generally stay the same, but the payout on offer can change with market conditions, for example during periods of high volatility.
Once you've opened a trade, its payout is fixed. The trade settles at the payout shown when you bought it, whatever happens to the payouts on offer afterwards.
The payout depends on the asset, the expiry time and the trade type, and is always shown on the trading screen before you buy:
- HIGH/LOW: up to 200%
- TOUCH and SPREAD: up to 500%
Related: What is a payout? · Trade types compared: HIGH/LOW, TOUCH and SPREAD · Expiry times