Start with essential expenses
Estimate the monthly cost of housing, food, utilities, transportation, insurance and required debt payments. That gives you a practical base rather than a percentage of income.
Choose a range, not a magic number
Someone with stable income, strong benefits and two household earners may need a smaller buffer than someone self-employed, single-income or responsible for large variable expenses.
Where to keep it
Emergency savings usually needs liquidity and low risk. The exact account choice depends on access, deposit protection, tax treatment and the interest rate available.
High-interest debt changes the trade-off
If you carry expensive revolving debt, it can make sense to build a starter emergency buffer while directing additional cash toward the debt rather than holding a very large cash reserve.
Primary sources
MoneyPilot review date: August 20, 2026