Prices and Sizes

All prices and sizes on CoinJar Exchange have finite precisions, and CoinJar Exchange has a systematic way of determining the tick sizes and trade sizes.

Tick Size

All order prices can only have 4 significant figures, and the unit of the 4th significant figure is the tick size (or minimum price increment). For example, if a product is traded at between 1000 and 9999, the tick size is 1.

Trade Size

Minimum trade size (or size increment) is determined by the tick size such that trade size multiplied by tick size has 2 decimal places (AUD-denominated pairs) or 6 decimal places (BTC-denominated pairs). For example, if BTC/AUD is between 1000 and 9999, the tick size is $1 and minimum trade size is 0.01 BTC.

Price Limits

To maintain an orderly market, prices of new orders cannot deviate too significantly from the market price. Currently, CoinJar Exchange requires the price of new orders to be within 80% and 125% of the last tick. For example, if the last price is $500, the minimum order price is $400 and the maximum order price is $625, regardless of buying or selling.


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