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Step 01

Emergency Fund: How Much Is Enough?

Level: beginner

Learning objectives

  • Understand the role of an emergency fund in your personal financial system.
  • Estimate fund size appropriate to essential expenses and income stability.
  • Distinguish emergency funds from investment money and flexible spending money.
  • Set up rules for using and replenishing funds after an event.

Why it matters

Financial risks often come before you can prepare

Job loss, reduced income, illness, home repairs, car breakdown or family events can all create immediate cash pressures. If you do not have an emergency fund, you are likely to have to borrow money, withdraw investments at the wrong time, or use high-cost credit cards.

Emergency funds protect long-term plans

A good portfolio can still fall apart if you are forced to sell assets when the market drops just to handle short-term expenses. An emergency fund acts as a buffer between real life and your investment plan, preventing you from having to sacrifice your long-term goals for a temporary event.

Having spare cash reduces decision-making stress

When you have a few months of living expenses prepared, you have more time to think and make choices. You do not have to accept a poorly suited job, an unfavorable loan, or make hasty investment decisions just because you are short-term cash-strapped.

Core lesson

An emergency fund is money set aside for emergencies, not investment money

Emergency funds should be kept in a safe, liquid and low-volatility location, such as a savings account, short-term deposit or quick withdrawal account. The goal of this money is not to maximize profits, but to ensure you have the money when you need it. Therefore, do not keep your emergency fund in stocks, crypto or assets that can plummet when you need to withdraw.

The appropriate level of funds depends on income stability and financial responsibility

Single people with a steady income and few obligations can start with 3 to 6 months of essential expenses. People with families, fluctuating income, paying off debt or working freelance should consider 6 to 12 months. The number should be calculated based on necessary living expenses, not all comfortable expenses.

Build your fund in stages to avoid being overloaded

Instead of trying to reach a large number right away, divide it into milestones: first 1 month of essential expenses, then 3 months, then 6 months or more depending on the situation. Each month, an amount is automatically transferred to the fund as soon as income is received. Once you have used the fund for a real event, prioritize replenishing it before increasing spending or investing further.

Need clear rules to avoid misuse

Emergency funds should only be used for events that are unexpected, necessary, and have a clear financial impact. Buying on sale, going on a trip, upgrading your phone or making a hot investment is not an emergency. The clearer the rules, the more the fund retains its role as financial protector.

Key terms

Emergency fund

A emergency fund is set aside for events that are unexpected, necessary, and have a clear financial impact.

Essential expenses

Amounts needed to live and work normally such as housing, meals, transportation, medical care, mandatory tuition and minimum debt repayment.

Liquidity

The ability to convert assets into cash quickly without experiencing significant loss in value.

Income stability

Certainty of revenue over time. The more volatile your income, the larger your emergency fund.

Classification

According to the number of months of expenses

The fund can be for 1 month, 3 months, 6 months or 12 months of essential expenses depending on personal situation.

According to storage location

Funds should be in highly liquid accounts, short-term deposits or low-volatility instruments; should not be located in high-risk assets.

According to intended use

Actual events include loss of income, medical care, necessary repairs or family responsibilities; purchasing and investing opportunities are not urgent.

Real-world examples

Single salary earner

Relatively stable income

If essential expenses are VND 12 million per month and work is stable, the initial target could be VND 36 million to VND 72 million for 3 to 6 months.

Freelancers have fluctuating income

Uneven income

If your monthly income is high and your monthly income is low and you are supporting your family, a 6 to 12 month fund of essential expenses helps reduce the pressure of losing customers or late payments.

Common mistakes

Invest all your reserve money

Investment assets can decrease just when you need money. Emergency funds prioritize safety and quick withdrawals.

Calculate funds according to comfortable spending level

Funds should be based on essential expenses in defensive mode, not maximum living standards when income is good.

Use funds for non-emergency needs

If you withdraw funds for travel, buying things or hot investments, the fund loses its protective role when real events occur.

Practical application

Build an emergency fund at each milestone

  1. Calculate minimum essential expenses each month.
  2. Choose the first milestone as 1 month of expenses to create the initial cushion layer.
  3. Automatically transfer a fixed amount to the fund immediately upon receiving income.
  4. Increase the goal to 3, 6 or 12 months depending on income stability.
  5. After each use of funds, temporarily reduce spending or invest to replenish.

Exercises

Exercise 1 - calculation

If your essential expenses are VND 15 million per month, calculate the fund size for 3 months, 6 months and 12 months.

Exercise 2 - case_study

A person has VND 80 million in cash and 0 investment. How much should they keep as an emergency fund if essential expenses are VND 10 million per month?

Exercise 3 - reflection

Write down three situations in which you are allowed to use your emergency fund and three situations in which you are not.

Key takeaways

  • An emergency fund is a cash defense, not an investment.
  • Fund size depends on essential expenses, family responsibilities and income stability.
  • Safety and liquidity are more important than yield for an emergency fund.
  • You should build a fund at each milestone to make it easy to start and maintain.
  • After using the fund, priority should be given to replenishing it.