Put the structure to work
Retirement/Liquidity Structure
A structural view of annual household needs, Annual Funding Gap, Liquidity, and long-term capital.
This educational model is not a guarantee or an individualized financial recommendation.
Companion worksheet
Build a clear plan for Annual Funding Gap, spending protection, and long-term Core capital.
Put the structure to work
A structural view of annual household needs, Annual Funding Gap, Liquidity, and long-term capital.
This educational model is not a guarantee or an individualized financial recommendation.
Wealth Ladder Guide
Annual Funding Gap (G) is the expected annual household need not covered by Stable Funding. It includes uncovered essential needs as well as irregular or discretionary needs.
Protection in Place: Coverage against major unforeseen financial losses, such as homeowners, auto, health, disability, life, and liability insurance. Protection transfers or limits major financial risks, while Emergency Liquidity provides cash for disruptions and expenses that must be absorbed directly.
Amount by which Core Available falls below Core Required.
Core Shortfall = max(0, Core Required − Core Available)
Stable Funding fully covers the Annual Funding Gap. Core support is therefore sized from 25% of annual household spending, while existing Core remains long-term invested capital for growth, resilience, Liquidity replenishment, inflation protection, and future needs.
For Liquidity sizing, use the Annual Funding Gap (G) or 25% of annual household spending, whichever is greater, then multiply by the selected Liquidity Buffer (B) in years. Planned Liquidity and Emergency Liquidity each equal the Liquidity Sizing Amount; they remain separate because Planned covers anticipated needs and Emergency covers unexpected needs. Runway Liquidity provides time protection through an extended disruption or recovery period and equals (B - 2) times the Liquidity Sizing Amount. When G is at least 25% of annual household spending, the practical formula reduces to the book's familiar L = B G structure.
Liquidity Sizing Amount = max(G, 25% of annual household spending)
Practical sizing: L = B x max(G, 25% of annual household spending)
When G is less than 25% of annual household spending, this simplified approach produces more Liquidity than a calculation based strictly on the actual funding gap. The difference provides an additional margin of protection while preserving a simple, consistent sizing rule.
Runway Liquidity is sized to cover at least B - 2 years of the current Annual Funding Gap (G), assuming Stable Funding continues at the expected level. When the 25%-of-spending minimum is greater than G, the additional amount provides extra margin. This is a sizing objective, not a guarantee that the money will last exactly that many calendar years under all future conditions.
Liquidity:
Core Required to Support Liquidity:
Core Required to Support Liquidity at 4%:
Foundational Liquidity relationship: L = B G. Practical sizing rule: L = B x max(G, 25%H). When G is at least 25% of H, the two are identical.
Ratios: s = G / C; when G is at least 25% of annual household spending, L / C = B s.
The 4% figure is a mathematical reference. The selected lower usable rate provides additional margin for market variability, fees, taxes, inflation, and Liquidity replenishment. It is not a guaranteed return or withdrawal rate.