Account balance is the total value of funds in a trading account from closed trades, deposits, and withdrawals — it doesn't reflect the running profit or loss of any positions still open. Balance only changes when a trade is closed, a deposit is made, or a fee or swap charge is applied.
Compare balance to equity to see how your open positions are currently performing: if equity is well below balance, you're sitting on unrealized losses.
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Account Types, and What Actually Changes Between Them
Standard, raw, cent, swap-free, professional. What genuinely differs between the tiers, and the one reclassification that costs you protections.