Build your emergency fund before investing

Keep 3–6 months of expenses in cash before directing money to the market.

Why it works

An underfunded emergency fund is the primary reason well-intentioned investors liquidate positions at market lows: a shock (job loss, medical bill) forces selling whatever is liquid, regardless of timing. The emergency fund is not a financial instrument; it is the behavioral protection that keeps the investment strategy intact through shocks.

How to do it

1. Calculate your monthly essential expenses and multiply by 3 (stable income) to 6 (variable income or single earner).
2. Keep this amount in a high-yield savings account that is not linked to debit cards.
3. Only begin or accelerate investing once the fund is fully capitalized.

Evidence

Observational research on household financial fragility finds that lack of liquid savings is strongly associated with inability to handle $400 shocks without debt — directly predicting forced liquidation of investments during downturns. (observational)

The research documents the problem (financial fragility); the 3–6 month rule is an established practitioner guideline rather than an empirically derived threshold.

Sources

• Federal Reserve Report on the Economic Well-Being of U.S. Households (SHED, annual) — tracks liquid savings fragility

Common mistake

Counting invested assets as part of the emergency fund because "I could sell if I needed to" — which exposes investment positions to forced liquidation at the worst possible moment.