The buying power indicates the max quantity of the quote token you can buy while still satisfying the margin requirements.
It varies based on the adjusted collateral, initial margin, collateral ratio, total balance, mark price, order price, and pending orders.
 When your adjusted collateral <= initial margin, you can only buy the quantity that is deemed to make a borrow position towards closure.
 When your adjusted collateral > initial margin and pending long balance  pending short quantity >= 0:
 Your buying power is larger when your adjusted collateral is larger, the buy token’s balance & pending long orders are smaller, the initial margin is smaller, and the order price is smaller.
 When your adjusted collateral > initial margin and pending long balance  pending short quantity < 0:
 Your buying power is larger when your adjusted collateral is larger, the buy token’s balance  pending short quantity is larger, the mark price is larger, and the initial margin is smaller.
Let’s use BTC as an example here:
Assuming that the BTC mark price is 10,000 USDT and its collateral ratio is 0.85.
Let’s say you have 100,000 USDT and enable the 5x leverage, the available buying quantity will be 34.11 BTC.
If the total amount of your order is lower than your balance, you are not borrowing. You will only start to pay the interest once you borrow the funds, please see the table below. We will use these scenarios in the following calculation:
Quantity Buy (BTC)  BTC Price (USDT)  Spent (USDT)  Borrowed (USDT) 
8 
10,000

80,000  0 
16  160,000  60,000  
34.1100  341,100  241,100 
Your balance and margin ratio will show the result in the corresponding behavior:
Balance 
Total Collateral

Total Exposure

Margin Ratio


BTC  USDT  
8  20,000  88,000  0  1000% 
16  60,000  76,000  60,000  126.67% 
34.11  241,100  48,835  241,100  20.26% 
If you enable 5x leverage and use max buy with 34.11 BTC:
 Total Collateral = 34.11 * 10,000 * 0.85 + (241,100 * 1 * 1) = 48,835
 Total Exposure = 241,100 * 1 = 241,100
 Margin Ratio = 48,835 / 241,100 * 100% = 20.26%
WOO X will stop you from borrowing more assets and placing orders due to the margin ratio being 20.26% which is very close to max out the leverage at 5x.
The system will calculate your available buying power in advance. For example, if you have 100,000 USDT, here is the available buying power with different collateral ratios and leverages:
Instrument

Mark Price

Collateral Ratio

Available Buying Power (USDT)  
3x leverage on  5x leverage on  
BTC  10,000  0.85  275,862.06  342,857.14 
ETH  1,000  0.85  275,862.06  342,857.14 
SOL  10  0.6  181,818.18  200,200.00 