Do you prefer the safety and security of a well-established firm in a heavily regulated area?

Is the broker licensed to do business in your country?

Can you verify how capitalized the company is, because this fact alone will ensure that the broker has access to global liquidity providers, which can provide quick order execution at competitive pricing?

If you are a beginner, does the broker have adequate training and support materials and one-on-one professional assistance?

Does their trading platform suit your tastes and can it handle your expected quantity and monetary volume of trades at a price that you want? Has the broker won awards or does it have several favorable testimonials from satisfied clients?

Is it an innovative broker or does it come up short by comparison of its set of features?

As you can see, there are a lot of things to think about when choosing a forex broker. The steps are to learn about the industry, select a few brokers for closer examination, compare and evaluate, and then make your selection. Lastly, test your choice slowly by becoming acquainted with their demo system, making small trades on their real-time system, talking to customer service, and then requesting a withdrawal, if that process concerns you.

There are good points listed here. Allow me to add the you have to look also if the Brokers is MM or without DD.
Another thing that really matter (at least for me) is the transparency – if the broker is open and going to show what exactly happen to your order or they have something to hide and will skip this info :/

regard @LazarR

all type broker from LP//MM///ECN//NDD//STP and anything in future burned

all of them when we using small order on lower tf or having bulk order or use any scalper,they be mother f_ _ker
profit in this game is not important,we must try long time survive in this game
but when we use higher tf or regular tradeو you see all of them is Holy
generally if we want make money on market,they want play with money on market
any strange trade need contract with broker,it need huge money for account,without it they beat your account in anyway ,sooner or later

bilbao, don't really understand your last post. What is a regular trade in your sense and what has scalping to do with mofus? More important than big money account is a good broker/ real market access. Most MM brokers don't allow scalping, but as scalper you don't work with MM brokers also for other reasons, anyway.

Most of MM brokers are trying to "hide" they are MM and present the opposite until the first few trades.
In overall, there are some reputable brokers with names proved with years and the serious traders with experience are aware how to find them.

The factors to consider before choosing a broker mentioned from Bilbao are important indeed. The top priorities in my opinion are if the broker is regulated, if he provides the services that you need to achieve your investing goals, if he has low trading costs and thigh spreads