What is Financial Independence? Financial Independence (FI) is the state in which your passive income from investments, rentals, and other non-labor sources fully covers your living expenses indefinitely, meaning you never again need to trade time for money. Unlike Early Retirement, FI does not require you to stop working; it only requires that you can.
Worked example: $45,000/year in annual expenses and a 4% SWR gives an FI Number of $1,125,000. Once your portfolio crosses that threshold, factoring in taxes and inflation, you are financially independent whether you continue your career or quit tomorrow. FI is the “FI” half of FIRE, and many practitioners stop there deliberately, continuing to work at jobs they now genuinely enjoy because pay is no longer a constraint.
FI is a continuum rather than a binary: Coast FI, Barista FI, Lean FI, and Fat FI describe partial or conditional states. The underlying principle is the same, build a portfolio of income-producing assets until labor becomes optional. It is the foundation concept the entire FIRE movement rests on.