Own-Funded Trading as a Business
You are not a trader with a brokerage account. You are the sole shareholder, the CEO, and the only employee of a one-person trading corporation. On a prop account, the firm charged you a fee to be your Investor and enforce your limits. Trading your own money, nobody sends that invoice, and nobody enforces anything. You have to build the firm yourself.
What business are you actually in?
On a prop account there is an external party in the room. The firm supplies capital, sets the drawdown rules, and cuts off the operation the moment a limit is breached. That external discipline is annoying, and it is also the most valuable thing you are paying for. Trading your own money removes it entirely. There is no firm. There is no rulebook you agreed to. There is nobody to stop you at 2%. The whole thing runs on governance you install yourself, or it runs on nothing.
This is why own-funded trading is harder to run as a business than prop trading, not easier.
If you've read The Lies We Trade By, you know the two roles that live in one chair: the Investor who owns the capital and sets the limits, and the Trader who executes within them. On a prop account the Investor role gets outsourced to the firm. Trading your own money, it comes back home. Owning the capital and running the operation are the same job now, and that job is the CEO. So there are still just two people in the chair: the Investor-CEO who funds the business and governs it, and the Trader who works inside the limits. The Investor-CEO's first and hardest job is to keep those two from collapsing into one.
The two chairs, one person
The Investor-CEO and the Trader are the same human and two different jobs
The Investor-CEO made the deposit and runs the operation. This is the owner who thinks in months and years: a target return, a maximum acceptable drawdown, a time horizon. On a prop account these two split apart: the firm is the Investor that supplies the equity and sets the limits, and you stay the CEO who has to manage that supplier (Prop Trading as a Business is entirely about running that relationship). The Investor-CEO asks one question: is this business viable?
The Trader sits at the screen and thinks in seconds and minutes: this entry, this stop, this size. The Trader works inside the limit the Investor-CEO set and asks one question: is this trade viable?
When these two collapse into one, the failures are predictable. The Trader starts making owner decisions mid-trade ("I can't take this loss, it's too much of the account"). The Investor-CEO starts making Trader decisions ("we're down this month, so we need to trade more to make it back"). Either way one chair sits empty, which means nobody is running the business, which means there is no business.
Be your own prop firm: the drawdown allowance
The single most useful thing a prop firm does is impose a drawdown limit you did not get to argue with. That is the product. The CEO of an own-funded operation has to manufacture the same thing internally, because the market will not do it for you and neither will your broker.
The mechanism from the book is simple and it is not the 1% rule. The Investor sets a maximum drawdown allowance for the whole operation. The Trader then gets a fixed slice of that allowance, roughly 10%, as the maximum exposure on any single trade idea. The numbers scale with equity: when the account grows, the allowance grows; when it shrinks, the allowance shrinks. The Trader does not get to override it, because the Trader did not set it. The Investor did, sitting in a different chair, on a calmer day, with no position open.
The point is not the exact percentage. The point is the separation. A limit set in advance by the Investor and enforced by the Trader is a business control. A limit invented mid-trade by a Trader who is down money is a panic response wearing a rule's clothing. The rule is never the solution. The separation is the solution.
Account sizing is a capital allocation decision
The first CEO question is not "how much money do I have to trade with?" It is "how much of my capital should this business actually run on?" Those are different numbers, and confusing them is where most own-funded operations are dead before the first trade.
Depositing your entire savings into a trading account is not funding a business. It is removing the Investor's reserve and handing the whole balance sheet to the Trader. The CEO funds the trading corporation with a deliberate slice of net worth and keeps the rest outside the operation entirely, exactly the way a prop firm never lets one trader touch the firm's whole treasury. The capital inside the account is the business's working capital. The capital outside it is the Investor's reserve, and it is not available to the Trader no matter how good next week's setup looks.
Work it the same way the prop side works an income target, just without a profit split to pass through:
| Target net income | $5,000/month |
| Annualised, that is | $60,000/year |
| At a realistic 1%/week (~50%/year gross) on own capital | $1,150/week gross needed |
| Working capital required to produce that | ~$115,000 |
| And that $115,000 is the working capital, not your net worth | keep a reserve behind it |
Notice what is missing compared to the prop model: there is no firm taking a cut, so you keep 100% of the return. And notice what is also missing: there is no firm absorbing the downside either. On a prop account a breach costs you the account and a challenge fee. On your own account a breach costs you real money that was really yours. The absence of a profit split cuts both ways, and the CEO who only counts the upside of it is not doing the job.
Leverage as a business tool
The business runs on $115,000 of working capital. That does not mean $115,000 has to sit at the broker. How much capital the business runs on and how much cash you hand a broker are two different decisions, and the CEO makes the second one alone: deposit 10% ($11,500), keep $103,500 in the reserve, and tell the Trader to add a zero to every position, risking 10x what an $11,500 account would carry.
Yes, everything on the broker account is now 10x: ten times the position, ten times the dollar risk, ten times the swing. That is real and deliberate, and it is not a trick of leverage. Leverage (margin) only makes it mechanically possible; adding the zero is an order the CEO gave. Here is the one thing almost everyone gets wrong: that 10x is measured against the wrong number. The $11,500 at the broker is not the business, it is 10% of it. Against the real $115,000, nothing changed.
| Broker account ($11,500) | Business capital ($115,000) | |
|---|---|---|
| Risk per trade ($1,150) | 10% of the balance | 1% of capital |
| Five losers in a row (-$5,750) | -50% of the account | -5% of capital |
| What it looks like | reckless gambling | an ordinary week |
Both columns are the exact same trades. The right column is the truth. The left is an optical illusion you created by depositing only 10%.
So spare me the reflex. This is not overtrading (the Trader takes the exact sizes the $115,000 plan prescribes, to the cent) and it is not overleveraging (the drawdown against the business's real capital is unchanged). The only risk that moved is counterparty risk, and it moved down: if the broker gets hacked, freezes withdrawals, or goes under tomorrow, you lose $11,500, not $115,000, and reopen elsewhere in the morning. That is the whole point.
The reserve is the only thing that makes this a business move and not a degenerate one. The 90% is not spare cash, it stands behind the account to cover margin and refund it. Strip the reserve out and yes, 10% at 10x is exactly the gambling everyone accused it of. And it cannot sit as idle cash: inflation is a guaranteed loss, so park the $103,500 somewhere safe, liquid, and yielding (short-term government bills, a money-market fund), not rotting in a zero-interest account.
One downside, and it is pure vanity: any public tracker (Myfxbook and friends) sees only the $11,500 account, so every return and drawdown prints about 10x wilder than reality. A calm 5% quarter shows as +50%, a routine 3% dip as -30%, and strangers will call you a reckless gambler. Publish your real capital base as context, or don't and stop caring. It changes nothing about the actual risk. If a number on a leaderboard matters to you more than the capital you kept out of a broker's reach, you were never running a business. You had a hobby with a login.
The counterparty: selecting your broker
On a prop account your counterparty is the firm, and what they hold is a promise to pay. On your own account your counterparty is the broker, and what they hold is your actual cash. That raises the stakes of counterparty selection, and it is a CEO decision, not a Trader preference. The Trader cares about spreads and execution speed. The CEO cares about whether the money comes back.
The questions the CEO asks about a broker:
- Regulation and fund segregation. Is client money held separately from the broker's operating funds, under a regulator that actually enforces it? This is the difference between a bad week and losing the entire treasury to an insolvency that has nothing to do with your trading.
- Withdrawal track record. Do withdrawals process on time and in full? Are the complaints about stuck withdrawals old and resolved, or recent and recurring?
- Execution model. Does the broker profit when you lose (a dealing-desk conflict), or does it route flow to the market and earn on volume? A counterparty whose business model depends on your failure is a different supplier than one that wants you trading for years.
- Financial stability and history. How long has the broker operated, through what market conditions, and what happened to client funds during the ugly ones?
What the CEO does not obsess over: half a pip of spread, platform skins, a marginally better commission tier. Those are the Trader's operating parameters. The CEO reads regulatory filings, segregation terms, and withdrawal reviews. Different documents, different reasons. The broker section covers the specific firms worth considering, or just pick ICMarkets if you want to skip the whole selection process.
The real cost nobody invoices you for
The genuine cost of running your own capital is not the spread and it is not the commission. It is the discipline a prop firm charges a fee to provide and then enforces on your behalf. Trading your own money, that same discipline is free to skip and enormously expensive to skip, and there is no line item, no reminder, no automated cutoff. You self-impose it or you do without it.
Five things the CEO has to budget that no broker will bill:
The Investor's reserve, capital kept deliberately outside the trading account so a drawdown is survivable and the business can be refunded to its working level instead of dying at its first bad stretch. This reserve has to be properly secured too, because cash is a losing position.
Personal runway, the living costs covered from outside the operation so the Trader never sits down needing this month's number to pay rent. A Trader trading for the grocery bill is a Trader the market will read and punish. Separating living costs from trading capital is the same wall between the Investor and the Trader, drawn around your household budget.
Taxes, the expense that trading your own capital drags in that a prop payout handles differently. Own-money profits come with the capital-gains tax tag attached: the business does not keep 100% of the return, the tax authority is a silent partner on every green year and offers nothing back on the red ones (there is no refund when you start losing money), and a CEO who budgets off the gross P&L is budgeting a number that never lands in the account. Set the target in after-tax dollars, because that is the only money the business actually gets to spend.
Time, the most expensive line item on the page and the one nobody prices. The smaller the capital allowance, the more time you burn to reach any given income, and it does not scale linearly, it climbs exponentially. An underfunded account needs implausible percentage returns, or years of compounding, to throw off a real wage, so the true cost of starting too small is paid in years of your life, not dollars. How much do I actually need to trade runs that math in full.
The governance itself, the drawdown allowance, the sizing rule, the ban on the Trader touching the reserve. Writing it down while flat and calm, then obeying it while live and emotional, is the actual product a prop firm sells. Own-funded, you are the firm. Charge yourself the fee.
Related: Prop Trading as a Business covers the same operating model when the capital comes from a firm instead of your own account. The Lies We Trade By is the framework underneath both.