A simulated account is a practice environment: live market prices, no real capital at risk, fills generated by the simulation. A live account puts the firm's actual money on the market. Retail prop firms issue simulated accounts for both evaluation and funding; live accounts are reserved for a small top slice of performers.
Why the distinction is drawn so sharply: the simulated model is what makes six-figure accounts and hard, automatic risk rules possible. The firm's exposure is its payout contract, not its trading ledger. Topstep, for example, runs its Trading Combine and Express Funded Accounts as simulations operated by TopstepTrader, with a separate Live Funded Account stage run by a distinct entity (per Topstep's own disclosures, checked 28 October 2026).
What changes on a live account: tighter scrutiny, often stricter risk limits per trade, and payouts without the simulation's caps. What does not change: the split concept and the rulebook's existence. Simulated vs live, compared in full; the entry stage: prop firm challenge.
Topstep's own risk disclosures describe the simulated and live entities separately.
Part of the beginner glossary cluster and the full prop firm glossary.