Guides & FAQ

How the simulator works.

The concepts behind the numbers, and answers to the questions that come up most. New to it? Start at the top.

What Tallyo actually does

Tallyo runs your trading strategy through the real mechanics of each prop firm — drawdown, consistency gates, daily-loss limits, payout caps — simulating thousands of possible paths to map the full range of outcomes.

Its job is to unearth the hidden rules that decide whether you actually get paid, and show you the honest distribution of results for your edge against a specific firm — pass rate, EV, and the paths that end in ruin included.

Win rate & R, or your own trades

In parametric mode you set a win rate, an R-multiple (reward-to-risk), and an optional break-even rate. The simulator samples trades from that profile and runs them against the firm's rules exactly as you entered them.

In CSV mode you upload your real trades. Two columns are required: realized_r (each trade's result in R) and risk_pct (the % of account risked on it). Everything is built from your actual results — no assumptions.

Reading the results

EV per eval is the expected value of buying one evaluation and running it to a payout or to bust. Pass rate is the share of evals that clear to funded. The never-paid share is how often an account reaches funded but never sees a payout.

The distribution shows the full spread of net outcomes — not just the average. A positive average can still hide a wide band of ruin, which is exactly what the chart is there to reveal.

Key firm mechanics

Trailing vs static drawdown: a trailing drawdown follows your equity up (and locks at a point), while a static one sits at a fixed level. Daily loss limits end or halt the account on a single bad day.

Consistency rules cap how much of your profit can come from one day. Payout caps limit how much you can withdraw per cycle, sometimes growing over cycles — and some firms close the account after a set number of winning days. The firm pages spell these out per account size.

Frequently asked

How do I use the Lab?

Pick a firm and account size, choose parametric (win rate + R) or CSV mode, and run. The result shows pass rate, EV per eval and per month, the never-paid share, and the full outcome distribution. Turn on Advanced to access execution settings — risk size-down as you approach a target, coasting once you're clear, per-cycle risk in the funded phase, and more. Every input has an info popup (the small ⓘ) explaining what it does and how it changes the numbers.

What are the configuration options in the Lab?

Beyond win rate and R, the Lab lets you model how you'd actually trade the account: size-down (trade smaller as you near the eval target or a payout, to protect consistency), coasting (ease off once a target is locked), per-cycle funded risk, and drawdown handling. These mirror real execution choices that meaningfully shift your pass rate and ruin — so you can find not just the right firm, but the right way to trade it.

Why do some firms show fewer options than others?

The Lab only shows the configuration options that actually have a use case for that firm and account — there's no point offering an eval size-down toggle on a firm whose eval doesn't reward it. So the controls you see are always the ones that genuinely change the outcome for the firm in front of you, nothing you'd never use.

What's the difference between the free and Lab plans?

Free can browse the firm directory and ratings. The Lab plan unlocks each firm's full rule breakdown and the simulation Lab — single-firm and portfolio runs, CSV upload, and the full result distribution.

What columns does my CSV need?

realized_r and risk_pct are required on every row. target_r is optional (it sharpens size-down and coasting). symbol and outcome are cosmetic and ignored. Extra columns are fine — they're skipped.

Can I save my simulations?

Yes, on the Lab plan. Hit Save after a run to store the config and results; reopen it from your account to tweak and re-run. You can also keep a library of CSVs so you don't re-upload.

Do you have an affiliate program?

We're open to it. If you create trading content or run a community and want to partner with Tallyo, reach out — we'd love to work with people who care about giving traders honest information. Get in touch and we'll share the details.

How do I cancel?

From your account, open Manage subscription to reach the billing portal. Cancellations take effect at the end of your current paid period — you keep access until then.