A journal that tracks gross P&L is telling you a flattering story. The number that actually funds your life is net — after brokerage, exchange fees, STT, GST, stamp duty, and, for leveraged positions, the funding interest that accrues every day you hold. These costs are individually small and collectively decisive, and a journal that ignores them lets a losing system masquerade as a winning one (your Trading Technology school's backtest lesson — ignored costs are the frictionless fantasy — applied to your live record).
The costs a serious journal must surface:
Charges per trade — the visible tax. Brokerage and statutory charges reduce every trade's real result. On a low-frequency positional book, a rounding error; on an active intraday or options book, a headwind that can exceed the edge itself. The journal must show net P&L and the impact — charges as a percentage of the trade — so you can see which of your styles the costs are quietly killing.
MTF funding interest — the invisible daily drain. Margin Trading Facility (MTF) lets you hold positions larger than your capital — the broker funds the difference, and charges interest every day the position stays open. This cost is invisible on the chart, absent from gross P&L, and brutal on long-held leveraged positions: a "winning" trade held 30 days on borrowed money can have its edge eaten by accrued interest no one was watching. A journal that tracks funding interest per position per day is the only place this drain becomes visible before it's a shock.
Multi-account reality — the fragmented truth. Serious traders rarely use one account: a main broker, a second for redundancy (your Trading Technology school's outage lesson), a family member's account, a paper account for testing. Judge each account alone and you never see your true combined performance, risk, or cost. The journal must roll up across accounts into one honest picture — because your capital is one balance sheet even when it's spread across five logins (your Behavioural Finance school's mental-accounting discipline, at the account level).
The reframe: your edge is what survives after costs, across every account, and the journal is the only place that number lives. Gross P&L per account is a comforting fiction; net P&L across all accounts is the truth, and only an instrument built to see charges, funding, and multiple brokers can show it to you.
QbarTrade surfaces all three. Each trade's drawer breaks down Taxes & Charges — gross P&L, total fees, net P&L, and impact % — with leg-level allocation. The MTF / Funding view tracks open funded positions, broker-funded vs. your margin, blended leverage, and accrued interest per position per day. And Accounts & Risk rolls capital, realized P&L, and today's P&L across every connected broker plus paper. The journal sees the true, net, whole-account number — which is the only number that pays rent.
Key Takeaway
Gross P&L is a flattering fiction; your real edge is what survives after brokerage, taxes, and MTF funding interest, summed across every account you trade. Charges quietly kill high-frequency styles, funding interest drains long-held leveraged positions daily, and multi-account trading fragments the truth. A journal must track net P&L, cost impact, funding, and roll up across all accounts — because your capital is one balance sheet, and only the net-across-everything number pays rent.
Think About It
MTF (Margin Trading Facility) lets you hold positions larger than your capital by borrowing the difference from your broker, who charges interest for every day the position stays open. This funding cost is invisible on the chart and absent from gross P&L, but it accrues daily and can quietly consume the profit on long-held leveraged trades. Your journal should track accrued MTF interest per position so a "winning" trade isn't secretly being eaten by carrying cost — a drain most traders never see until it's already done the damage.
Journal Lab — Find Your True Net
For last month, calculate three numbers: your gross P&L, your total charges (brokerage + statutory), and any MTF funding interest paid. Subtract to get true net, then express charges as a % of gross. If you trade across multiple accounts, do this combined, not per-account. The gap between gross and net — and how it varies by your trading style — is often the most sobering, and most useful, number a journal reveals.