I’ve been looking at different brokers and I’m realizing I don’t actually have a clear way to compare them fairly. Some have tight spreads but high commissions, others have wider spreads with rebates attached.
I want to understand how to calculate your true total cost per share, especially when rebates like GlobeGain are involved. Should I be adding everything together (spread + commission - rebate)? Or is there a simpler way?
I’m also curious if anyone actually does this comparison regularly, and whether it’s changed which brokers they use.
How do you actually measure fair cost comparison between brokers?
True cost calculation is simple but most traders skip it. Here’s the formula:
Total cost per lot = Spread (in pips) + Commission (converted to pips) - Rebate (in pips) = Your real cost.
Example with EUR/USD:
Broker A: 0.9 pip spread, no commission, 0.3 pip rebate = 0.6 pip net cost per lot.
Broker B: 1.8 pip spread, 0.5 pip commission, 0.5 pip rebate = 1.8 pip net cost per lot.
Broker A wins. It looks more expensive at first, but rebates swing the math.
The critical step: don’t compare static numbers. Trade each broker for 1-2 weeks with identical position sizes and strategies. Track everything. The real winner is the broker with the lowest actual cost for YOUR trading style.
I did this comparison last year and switched brokers because the math showed it clearly. Rebates completely changed the outcome.
Cost comparison changed my entire approach to broker selection. I used to just look at spreads and feel like I was comparing apples to apples. I wasn’t.
What I do now: for any broker I’m considering, I calculate my average trade cost including rebates over my last 100 trades. That’s my yardstick.
For example, on Deriv with GlobeGain rebates, my average EUR/USD cost came to 0.7 pips including everything. On another broker with “better spreads” but no rebate, my average was 0.95 pips. The numbers are completely different when you measure what actually matters.
The learning: commission and rebates matter as much as spreads. Ignoring them costs you real money.
Calculate: spread plus commission minus rebate equals real cost.
I started tracking this more carefully about six months ago and it actually made a big difference. When you put numbers on paper and compare them honestly, you often find the broker you think is cheapest actually isn’t.
The key is being consistent with how you measure. I use the same formula for every broker I test, so the comparisons are fair.
It doesn’t take long to see the pattern. Usually one broker is clearly better than the others once you look at real costs.
I just look at total cost now instead of guessing. Rebates matter more than I thought.
Track fifty trades per broker. Compare numbers. Decision becomes obvious.
I actually built a simple spreadsheet that calculates this for me now. Every trade auto-populates the cost. After 100 trades, I have a crystal-clear picture of whether I should stay or leave.
This approach removes emotion from broker decisions. It’s just math.
The honest truth: most traders never actually do this calculation, so they’re always wondering if they picked the right broker. Once you do it, you know for sure.
Math wins. Feelings lose. Always track.
Bottom line: calculate true cost (spread + commission - rebate). Test each broker with real money over 1-2 weeks. Compare the average cost per trade. The winner is objective, not subjective.