What is runway?
Runway is the number of months you can keep going if every dollar of income stopped today.
That is the whole definition. Cash you can actually reach, divided by what one month costs to run. If you have twelve thousand dollars and your life costs four thousand a month, your runway is three months.
Businesses use the word about the company. It works exactly the same way about a man. Most men can tell you their salary to the dollar and have never once worked out the number that would matter if the salary stopped.
Why does runway matter more than income?
Income tells you what is coming in while things are normal. Runway tells you what you can survive when they are not.
A man with a large income and two weeks of runway is in a weaker position than a man with a modest income and eight months. The first one cannot afford a single bad conversation with the person who signs his cheques. The second can.
That is why it shows up in how a man negotiates, whether he can walk away from work that is beneath him, and whether he takes the risk his gut has been pointing at for two years. Those all look like courage questions. They are arithmetic questions.
How do you calculate it?
Two numbers and a division.
First, what a month costs. Not the mortgage and the car. Everything, including the bills that arrive annually and the ones that arrive irregularly but certainly. Twelve months of statements, divided by twelve.
Second, cash you can actually reach this week without penalty or paperwork. Not your house. Not retirement accounts you would be punished for touching.
Divide the second by the first. That is your runway in months.
What counts as a good number?
Zero to one month is a crisis with a calendar on it.
Three months is the first real milestone and it changes how a man sleeps.
Six months is where most of the flinching stops.
A year is a different life. At twelve months a man can leave a job, take the lower paying work that builds the right thing, or sit out a bad market without making a decision from fear.