List what you own and owe
Add realistic current values for cash, investments, property and other meaningful assets. Subtract loan and credit balances. Avoid counting a home’s full value and its equity as two separate assets, and do not count projected earnings as money you already own.
Keep liquidity visible
Two households can have the same net worth and very different flexibility. Cash in an accessible account, retirement investments with withdrawal rules and equity in a property are not interchangeable. Track accessible reserves alongside the headline total.
Use consistent estimates
Choose a repeatable valuation method and review on a schedule that suits your decisions. A property estimate or private business valuation is uncertain. Mark that uncertainty instead of treating an optimistic number as cash available for a goal. Selling costs and taxes can reduce what you ultimately receive.
Watch the direction and the drivers
When the number changes, separate new saving, debt repayment and market movements. That helps you see progress you influenced without mistaking a rising market for a permanently higher savings capacity. A negative starting balance is information for a plan, not a reason to avoid measuring it.
Put the idea into numbers
Further reading
CFPB: Building an emergency fund
General education with a U.S. context. Illustrations are hypothetical. Account, tax and legal rules depend on your circumstances and location.