How much money should I keep in cash?
Cash flow
Separate everyday operating cash, an emergency reserve, and money for known near-term expenses. Three to six months of essential expenses is a starting framework for reserves, not a universal rule or a cap on all cash.
Give each cash balance a purpose and a date before deciding what is available to invest.
Build three cash buckets
Operating cash covers bills between paydays. Emergency reserves cover an interruption or unexpected essential expense. Separate goal cash covers predictable commitments such as estimated taxes, tuition, a home purchase, or a business investment.
Do not count the same dollars as both a tax payment and an emergency reserve. A large balance may be fully committed even when it looks like excess cash.
Calculate a target from essential spending
Start with housing, food, utilities, insurance, dependent care, and minimum debt payments. Add costs that could continue after a job loss, including replacement health coverage. Then choose a reserve period based on your situation.
Hypothetically, $6,000 of monthly essential expenses times six months creates a $36,000 emergency target. If you also owe $12,000 in estimated taxes and need $8,000 for a scheduled repair, those separate commitments bring the total to $56,000, before operating cash. This is an illustration, not a recommended amount for every household.
Stress-test the income you rely on
A stable salary, another independent household income, and flexible expenses can support a different reserve from commissions, business distributions, or equity-heavy pay. Two incomes at the same employer may fail together.
Consider how long replacing income might take, insurance deductibles, dependents, and access to assets without a forced sale. Six to twelve months or more may fit some variable-income households, but the right figure follows the risks rather than a rule alone.
Choose liquidity and understand protection
For emergency money, prioritize ready access, principal stability, and clear terms. FDIC-insured savings and money market deposit accounts differ from money market mutual funds. Mutual funds are investments and are not FDIC-insured, even when sold through a bank.
FDIC coverage generally totals $250,000 per depositor, per insured bank, per ownership category, not per account. Aggregate accounts in the same category and check sweep-program terms or use the FDIC estimator when balances are large. Credit union coverage uses a separate NCUA framework.
Decide what happens above the target
After accounting for reserves and dated commitments, compare remaining cash with debt payoff, longer-term investment goals, and business needs. Inflation can erode purchasing power, but investing money needed soon introduces the risk of selling after a loss.
Record the target and review it after a job, household, or spending change. Replenish the reserve after use rather than treating the original target as a permanent achievement.
What people often get wrong
- Counting tax or down-payment money as an emergency reserve
- Assuming every account at one bank has separate deposit coverage
- Treating money market funds as insured bank deposits
- Investing near-term money solely to earn a higher expected return
What to think about next
- List operating cash, emergencies, and dated commitments separately.
- Calculate essential spending and stress-test the reserve period.
- Check account access and deposit coverage, then assign remaining money to a goal.
When to consider working with a CFP®
Working with a CFP® can help when these decisions feel intertwined, taxes, investments, cash flow, and life goals tend to move together, and a planning relationship can offer structure, prioritization, and accountability over time.
Frequently Asked Questions
Should the reserve sit in my brokerage?
Only after checking the actual product, access time, risk, and protection. A bank sweep, a money market mutual fund, and stocks are not interchangeable forms of emergency cash.
Is a bigger reserve always better?
No. More liquidity can reduce disruption risk but also carries an opportunity cost. Decide how much uncertainty the reserve must cover and assign anything beyond that deliberately.
Sources and further reading
Talk to a CFP® who works with high earners.
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