# Predict Fees and Limits

Last updated

Last updated

Fees

Side | Fee |
---|---|

Maker | No Fee |

Taker | Up to 0.5% |

In the interest of fairness, Predict fees are **symmetric**.

This means that, in a given market, takers trading the same volume of complementary shares should expect to pay the same fee. **Makers, however, do not pay a fee**.

Consider the following two transactions:

Alice sells

**100 YES**shares at a per-share price of $0.70Bob buys

**100 NO**shares at a per-share price of $0.30

Here, it stands that Alice and Bob should be charged the same for their activities — but Alice will receive USDB, while Bob will receive NO shares. To standardize the fee, we apply the following calculations:

**For selling**

$fee = 0.005*min(price,1-price)*\frac{size}{price}$

**For buying**

$fee = 0.005*min(price,1-price)*size$

In practice

Alice sells **100 YES** shares at $0.70:

$fee = 0.005*min(0.70,0.30)*\frac{100}{0.7} = 0.005*0.3*\frac{100}{0.7} = 0.214$

The result provided above references the number of shares extracted as a fee, which is equivalent to 15¢.

Bob buys **100 NO** shares at $0.30:

$fee = 0.005 * min(0.30,0.70) * 100 = 0.005*0.3*100 = 0.15$

Here, our result is the dollar value extract as a fee — in other words, 15¢.

Limits

For any given market, a maximum of **10 limit orders** can be placed concurrently by a single user/address.

In addition, there is a minimum order amount of **1 USDB**.