I’ve been trying to figure out the true cost of trading and it’s more complicated than just looking at spreads. Rebates change the whole math, but nobody seems to talk about the real total cost.
Like, if one broker has a 1.2 pip spread with no rebate and another has a 1.8 pip spread with a 0.7 pip rebate, which one actually costs you less per trade? And does the rebate rate matter if the spreads are already tight?
I’m also wondering if there are brokers that people generally agree cost less when you factor everything in, or if it’s just completely dependent on your trading style. Because my spread costs feel pretty high even though the broker seems reasonable on paper.
How do you actually calculate your real trading cost, and which brokers have worked best for you when you do the math properly?
True cost per lot = (spread + commission) × pip value - rebate. That’s the formula.
For EUR/USD standard lot, a 1.2 pip spread with no rebate costs about twelve dollars. A 1.8 pip spread with 0.7 pip rebate costs about eleven dollars. The rebate wins by one dollar per trade, but execution quality matters more. A broker that slips you one pip on the open costs more than any spread difference.
FP Markets ECN accounts typically cost less than STP accounts when rebates are included, if your broker has decent rebate rates. Test with ten trades on each to see real slippage before committing volume.
Don’t just look at advertised spreads. Check actual execution. Track ten of your own trades and calculate average slippage plus spread. That’s your real cost, not the marketing number.
I spent months comparing this because my costs felt high. What I found was that commission plus spread minus rebate matters, but execution is the killer variable.
I traded with three different brokers for three months each using the same strategy. Same market conditions, same position sizes.
Broker A: 1.0 pip spread, no rebate. Actual cost averaged 1.3 pips (slippage).
Broker B: 1.8 pip spread, 0.6 pip rebate (so 1.2 pip effective), better execution. Actual cost averaged 1.4 pips.
Broker C: 1.5 pip spread, 0.5 pip rebate, slower platform. Actual cost averaged 2.1 pips.
Broker A seemed cheapest, but broker B beat it because execution was tighter. Rebates helped but weren’t the deciding factor. The platform stability and how fast orders filled mattered way more than I expected.
I ended up sticking with broker B even though broker A advertised lower spreads. Real-world costs were lower.
You have to actually track your trades to see the real number. The advertised spread isn’t always what you pay because of slippage and timing.
What I do is take my last fifty trades and calculate the average entry price versus the bid/ask at the moment I clicked. Add in any rebate credit I got that month. That’s my real cost.
Some brokers look cheap on paper but execute slowly, so your actual cost is higher. Others have slightly wider spreads but fill so fast that you end up ahead.
Trying to compare without using the brokers is tough. Test with small position sizes first.
Spread plus commission minus rebate gives you the base. Then factor in actual execution speed because slippage adds real costs.
Rebates help but execution quality matters more than rebate rates in my experience.
One thing worth testing: does the broker’s rebate rate scale with volume? Some offer 0.3 pips rebate for small traders but 0.8 pips for traders above a certain monthly volume. If you’re trading a lot, the volume tier matters more than the base rate advertised.
Platform stability beats low spreads every time.