what's the difference between bid price & ask price in forex?

Ask price is the price you pay to open a buy trade, so whenever you click on the "BUY" button you are entering the market at the ask price.

Bid price is the price you pay to open a sell trade, so when you click on the "SELL" button, you are entering the market at the bid price.

The Ask & Bid prices are determined by your broker & they are never the same because your broker inflates the ask price by adding their fees to it & this is how the broker makes money.

So, the Ask price will always be higher than the bid price every time and the difference between ask and bid price is called the spread which is a fancy name for your brokers fees.

Let us take an example, if your broker displays the buy price as 1.13125 then that is the brokers ask price.

If the broker displays the sell price as 1.13116 then that is the brokers bid price, you will notice that one is higher than the other.

When you subtract both ask & bid prices (1.13125 - 1.13116) you get 0.00009 which is 0.9 pips spread fees.

The bid/ask prices can on the same instrument can be different with various brokers, because every broker gets their bid/asj pricing from different sources. Whatever is the case, always look for a broker with low bid/ask price difference or low spread. it makes trading cheaper over the long run, as these spread fees can add up over time if you are a frequent trader.