Liquidity pool is the buffer that keeps a market crash from becoming a forced sale. It's broader than pure cash - it adds fixed income - and it's sized for a slower, bigger risk: years, not months, of a downturn.
What it measures
Cash plus fixed-income holdings, combined, divided by your net monthly outflow. Fixed income counts here because bonds and similar holdings can typically be sold without the same drawdown risk as equities - they're the assets you'd draw on before touching your growth portfolio.
The scale
Also a "goldilocks" gauge, but on a wider 0-48 month axis with a green band of 18 to 36 months (1.5 to 3 years).
- Below 18 months — sequence risk. Red near zero, amber approaching 18.
- 18 to 36 months — right-sized. The green band.
- Above 36 months, toward 48 — above target, then excess (opportunity cost), amber then red.
Why this range
The specific danger this guards against is "sequence-of-returns risk": if a market downturn hits right when you need to fund living expenses, and your only option is to sell equities, you lock in losses at the worst possible time - permanently shrinking the portfolio's ability to recover. Historical equity bear markets mostly resolve within one to three years, so 18-36 months of cash-and-bonds runway is enough to ride one out without touching stocks. Push much beyond that and you're carrying safety you're unlikely to need at the cost of the higher long-run return equities would otherwise provide - the same opportunity-cost logic that caps cash pool on its own, smaller scale.
Figures and projections are illustrative estimates, not guarantees, and this guide is not financial advice. Discuss decisions with a licensed advisor.