The strongest argument for a small first deposit has nothing to do with markets themselves. You are testing a process — signing up, verifying, funding, opening a first position and, most importantly, withdrawing — and that test should cost as little as possible.
Run the full loop starting from the ₱15,000 minimum. Deposit, wait, withdraw part of it, and watch how long the money takes to return and whether it comes back to the method you used. A platform that handles a small withdrawal cleanly is one worth trusting with more.
Only after that round trip does it make sense to think about scaling up, and even then in steps rather than one big move. A bigger deposit doesn't make a strategy work better — it only makes the same outcome larger in either direction.
Why the first deposit matters most
The first deposit sets the habit. An amount chosen because it feels comfortable tends to lead to calm decisions later; an amount chosen because it felt like the maximum possible tends to lead to decisions made under pressure.
A sensible starting point
Money you wouldn't need back within a year, in an amount whose loss would sting but not hurt. That number is personal, and nobody else can set it 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 gets deducted, and by whom? Who do I contact if something looks off? A service 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 put in. The value of investments can go down as well as up, and you may get back less than you originally invested. Never invest money you cannot afford to lose.