The strongest case for a small first deposit has nothing to do with markets — it's about testing the process: signup, verification, funding, a first live position and, most importantly, a withdrawal. You want that test to cost as little as possible.
Run the full loop at the minimum deposit. Deposit, wait, withdraw part of it, and watch how long the money takes to return and whether it goes back to your original method. A platform that handles a small withdrawal cleanly is one worth scaling into.
Only after that round trip does it make sense to consider size — and even then, in steps rather than one move. A bigger deposit doesn't make a strategy work better; it just makes the same outcome larger in both directions.
Why the first deposit matters most
Your first deposit sets the habit. An amount chosen for comfort tends to be followed by calm decisions; an amount chosen to feel like the maximum tends to be followed by decisions made under pressure.
A workable starting point
Money you wouldn't need back within a year, in an amount whose loss would sting but not damage you. That's a personal number nobody else can set for you.
Adding to it later
Topping up a balance you already understand beats starting large and learning the hard way afterward.
Questions worth asking before you send anything
How do I withdraw, and to where? What's deducted, and by whom? Who do I contact if something looks off? A platform that answers all three clearly, in writing, is behaving the way it should.
Investing involves risk, including the possible loss of some or all of the capital you invest. The value of investments can fall as well as rise, and you may get back less than you put in. Do not invest money you cannot afford to lose.