On the “Buy” and “Sell” column at Indodax.com, you will see terms like “Maker” and “Taker”,  just like this:

Market Maker

"Maker" is an Indodax member just like you who sell and or buy Bitcoin at their own price, or in other words using the ‘Limit’ method. Let’s say the current Bitcoin price is 5.000.000 IDR/BTC. You want to buy about 100.000 IDR at the price of 4.000.000/BTC by entering it in the "Buy Bitcoin" box. When you click on the ‘BUY BITCOIN’, your buy order will be on pending until the bitcoin price fall to 4.000.000 IDR/BTC just like what you wanted before. The pending order will be recorded in the Order Book, and with that, you’ve become a market maker. The point is, to be a market maker, you just need to buy at the lower price from the lowest price in the selling market, and sell at a higher price from the highest price in the buying market.

The benefit you get when you become a market maker is that you don’t have to pay the transaction fee (0% fee) for your buy/sell order, and you can determine your own sell or buy price. but, the downside is, that you must wait until the bitcoin price move towards your determined price.

Market Taker

"Taker" or Instant Market is an Indodax member that buys or sells using the price that has been listed on the order book. the member that becomes a market taker usually is the member that used the "Market (Instant)" method. The benefit you get when you become a market taker is you can buy/sell bitcoins instantly, without the need to wait for your order to be fulfilled, because you just buy/sell from the price list that has already been created by the market maker. But you will be charged 0.3% (+0,21% processing fee) from your transaction for the transaction fee.

• • • Instant Market Method at Indodax.com. 
      

BUY

Enter the amount of Rupiah you want, then press the “Buy Bitcoin” button. 

SELL

Enter the number of Bitcoin you want to sell, then press the “Sell Bitcoin” button.