What runway actually means when income is lumpy, and the number to reach before you quit anything.
Last updated: 4 September 2026
Runway is how many months you can cover your costs with the money you already have, assuming no income arrives. For a salaried person, three to six months is the standard advice. For a funded trader it is not enough, and the reason is not that trading is riskier. It is that the income is lumpy in a way a salary is not.
A salaried person with six months of runway has six months of buffer against one event: losing the job. A funded trader has to survive a drawdown, a failed evaluation cycle, a firm changing its rules, and a payout that is simply late, and any of those can happen in a month where the others also happened.
Runway is reserve divided by monthly burn, and the burn is where people get it wrong. It is not your rent. It is every cost that continues whether or not you trade well.
That last category is the one that quietly breaks budgets. Divide the annual total by twelve and add it to the monthly figure. Most traders find their real burn is 20 to 30% higher than the number they had in their head.
Figures here are illustrative Every number below is an example chosen to show the arithmetic, and none of it is a recommendation about your finances. How much tax you owe, and therefore how much of your reserve is actually yours, depends on your jurisdiction. Confirm it with a qualified professional. This is general information, not financial or tax advice.
Tax reserve is not runway If you are holding 8,000 and 5,000 of it is tax you owe, your runway is calculated on 3,000. Counting reserved tax as buffer is the single most common way traders overestimate how long they can last, and it fails at exactly the moment the tax becomes payable.
Twelve months is a defensible floor for a funded trader with no other income, and eighteen is more comfortable. That is longer than the standard advice, deliberately.
Illustrative, with a real burn of 2,500 per month.
| Reserve | Runway | What it survives |
|---|---|---|
| 7,500 | 3 months | A bad month. Not a bad quarter. |
| 15,000 | 6 months | A drawdown, if it resolves quickly. |
| 30,000 | 12 months | A failed year without forced decisions. |
| 45,000 | 18 months | A failed year plus a rebuild. |
The reason for twelve rather than six is that short runway changes how you trade, and always for the worse. A trader who needs a payout this month takes trades they would otherwise skip, sizes up to force a result, and breaks the rules that got them funded. Runway is not only financial protection. It is what makes it possible to trade the plan.
Monthly potential is worth calculating, provided you treat it as arithmetic on assumptions rather than as a forecast. The inputs are your account size, risk per trade, reward-to-risk, win rate, and trading days.
Pull the win rate and reward-to-risk from your own logged trades rather than estimating them. Estimated win rates are almost always optimistic, and the error compounds through the calculation. If you do not have enough logged trades to know your win rate, that is itself the answer about whether to go full time.
A projection is not a forecast Multiplying per-account potential by the number of accounts you intend to run gives an upper bound under assumptions that all hold simultaneously. Real months miss the assumption on at least one input. Treat the output as a ceiling, plan against something well below it, and never treat it as income you can count on.
Going full time does not have to be a single decision, and it is usually better as a sequence.
Step two is where most people are honest with themselves for the first time. Six consecutive months clearing a real burn, after tax, is a demanding bar, and the traders who clear it tend to be the ones who were already tracking every number rather than estimating them.
Propel Audit is trading analytics and planning software. All calculations, simulations and insights are based on the data you provide and are for educational and informational purposes only. It does not constitute financial, tax, or investment advice.