Why numbers may differ from the broker report
Explains common differences between PnL Plus and broker reports without assuming one side is wrong.
What it is. Sometimes a number in PnL Plus will not match the broker report exactly. Most of the time this is not an error; it is a different question asked of the same data: realized result, NAV with open positions valued at current market prices, return adjusted for capital flows, or reporting in a specific currency.
Why it matters. A broker report is often good for accounting, while trader analytics is meant to explain risk and decision quality. Both numbers can be honest, but answer different questions. That is why we show how we count and keep deposits, withdrawals, income, fees, taxes, and revaluation separate from trading result.
How it works. Money is converted to the account currency with daily cross rates; trade times are stored in broker server time. For Exante/IBKR investment accounts there is a difference between realized balance from operations and NAV with open positions valued at current market prices. Before monitoring starts, Exante/IBKR history may be reconstructed from account operations; after the first measured NAV it switches to broker NAV. Income and costs are classified by type, so dividends, coupons, interest, taxes, commissions, rollovers, and funding are not mixed into one generic row. IB Flex also has practical report-window limits, so the earliest history may start from the first available NAV rather than from the first day of the account.
How we compute it
Compare like with like: account currency versus instrument currency, realized balance versus NAV, server time versus local time, report period versus monitoring period, and whether cash flows and income events are included.