The cash cushion comes first: how much, where to keep it, and why
Before compounding can do anything for you, it has to be left alone. A cash cushion is what keeps you from selling at the worst possible moment.
September 5, 20266 min read
Almost every bad investing outcome we see up close starts the same way: a real-life expense arrives, there is no cash, and something gets sold at a bad price. The cash cushion is not a return-generating asset. It is what allows the rest of your plan to keep working while life happens.
How much is enough
The honest answer depends on how stable your income is and how many people depend on it. A two-income household with steady salaries can hold less than a commission-based earner or a business owner whose revenue swings by quarter.
Steady salary, dual income: roughly three months of essential expenses.
Single income or one dependent household: closer to six months.
Variable income, self-employed, or owner: six to twelve months, plus a separate business reserve.
Count essential expenses — housing, food, insurance, transport, minimum debt payments — not your full lifestyle budget.
Where to keep it
The cushion has one job: be there, in full, on the day you need it. That rules out anything that can fall in value or take days to access. Yield matters less than certainty, though there is no reason to accept nothing.
Keep it liquid and separate from your everyday checking account so it is not spent by accident.
High-yield savings and money market accounts are the common homes; understand any withdrawal limits.
Interest earned is generally taxable in the year you receive it — small, but real.
Do not invest the cushion in stocks or crypto. The moment you need it is often the moment those are down.
What comes after
Once the cushion exists, the sequence matters more than the picks: clear expensive debt, capture any employer retirement match, then automate ordinary investing. Order beats optimization for most households, and the cushion is what keeps that order intact through a job loss or a broken transmission.
Rebuild the cushion first after any withdrawal, before resuming extra investing.
Revisit the target when your income, rent, or family size changes.
A separate sinking fund for known expenses — insurance premiums, tuition, a roof — keeps the emergency fund for emergencies.
Educational guidance, not personal advice. Outputs are illustrative, may contain errors, and should be independently verified before material decisions.
