JustChartsHow Much Money Do You Need to Start Trading? (Position Sizing Guide)
Many brokers let you start with $100 or less, but the more important number is how much you risk on each trade. A common rule is to risk no more than 1% of your account per trade: with $1,000, that is $10. Your position size then follows from your stop-loss distance: lots = risk ÷ (stop in pips × pip value per lot).
The minimum deposit isn’t the real question
Micro lots and fractional crypto positions mean you can technically trade with very little. But a small account combined with large positions is the fastest way to lose it. The better question is: how much can you afford to lose, and how much will you risk per trade?
Only trade money you can afford to lose. In Europe, brokers must disclose what share of their retail CFD accounts lose money, and those figures are commonly in the 70–80% range.
The 1% rule
Many traders cap the loss on any single trade at 1% (some use 0.5–2%) of their account. A string of ten losing trades — which happens to every trader — then costs about 10%, not the whole account.
How to calculate position size
- Risk amount = account balance × risk %
- Stop distance in pips, set by your trade idea (not by how much you want to make)
- Pip value per lot — see how to calculate pip value
Lots = risk amount ÷ (stop distance in pips × pip value per lot)
Worked example
Account: $1,000. Risk: 1% = $10. Trade: EUR/USD with a 20-pip stop. Pip value: $10 per standard lot.
$10 ÷ (20 × $10) = 0.05 lots (5 micro lots). If the stop is hit, you lose about $10.
What returns are realistic?
Professional money managers who make 10–20% a year are considered successful. Expecting to double a small account every month leads to over-sizing and large losses. Treat your first months as learning, with small risk.
A sensible starting checklist
- Use a regulated broker or exchange — check it on your regulator’s public register (for example the FCA register in the UK, NFA BASIC in the US or ASIC’s register in Australia).
- Practise on a demo account first.
- Decide your risk per trade before you place it — and always use a stop-loss.
- Check the economic calendar so news doesn’t surprise you.
- Keep a trading journal.
Frequently asked questions
Can I start trading with $100?
Many brokers allow it, using micro lots or small crypto positions. Keep risk per trade small — at 1% of $100 that is $1 — and treat it as learning rather than income.
What is the 1% rule in trading?
It means never risking more than 1% of your account balance on a single trade. The position size is set so that hitting the stop-loss costs no more than that amount.
How do I calculate lot size?
Divide the amount you are willing to risk by the stop distance in pips multiplied by the pip value per lot. For example, $10 ÷ (20 pips × $10) = 0.05 lots on EUR/USD.
Is forex trading legal?
In most countries, yes, through a licensed broker — but the rules differ. Some regulators cap leverage, some restrict which products retail traders can use, and a few limit trading with overseas brokers. Check your national regulator’s website and confirm your broker is on its register.
Put it into practice
Live charts, an economic calendar and trading calculators — free with a JustCharts account.
Use the free position size calculatorThis article is for education only and is not financial advice. Trading leveraged products carries a high risk of losing money. Contract sizes, trading hours and leverage limits vary by broker and country — always check your own broker’s specifications.