With an Emergency Fund, Where It Sits Matters More Than How Much
"Keep three to six months of living expenses."
Read anything about money and you'll meet that number. Two things bother me every time. First, it has no legal or official basis — it's someone's rule of thumb that spread widely. Second, and more important: where you keep it matters more than how much, and almost nobody talks about that part.
An emergency fund doesn't exist to earn returns. It exists to be exactly there at the moment you need it. Let's look at it that way.
What "3 to 6 months" misses
The same "three months" means completely different things to different people.
- Someone on a steady salary and a freelancer with lumpy income need different thicknesses.
- Someone who can find work again in two months and someone who needs six are not the same case.
- Living alone differs from supporting a family.
So instead of a months-based rule, I'd ask two questions:
Those two answers are your number. Not someone else's.
And if starting feels hopeless — don't think "anything less than 3–6 months is pointless." Sudden expenses are usually not fortunes; they're a hospital bill, a repair, a deposit gap — a few hundred thousand won. If a ₩1 million cushion keeps you off revolving credit or an emergency loan, it has already done its whole job.
The real question: where to keep it
An emergency fund needs exactly three properties:
- Instantly withdrawable (if you must wait days, it isn't an emergency fund)
- Principal doesn't shrink (being down on the day you need it defeats the purpose)
- Separated from your spending account (mixed money disappears)
By that standard, the usual options:
| Where | Instant? | Principal | Deposit-insured |
|---|---|---|---|
| Your spending account | ✅ | ✅ | ✅ |
| Instant-access / parking account | ✅ | ✅ | ✅ |
| Term deposit | ⚠️ lose interest if broken early | ✅ | ✅ |
| Brokerage CMA | ✅ | varies by product | ❌ No |
| Stocks / funds | ⚠️ takes time | ❌ fluctuates | ❌ No |
Your spending account fails rule 3. What you see, you spend. An emergency fund must live in a different account.
A term deposit is safe but costs you the promised interest if you break it early — a poor home for the whole fund.
Stocks and funds are not an emergency fund. The moment you urgently need cash often coincides with a bad market. Selling into that, locking in the loss, is the most painful way to fund an emergency.
Being honest about CMAs
You'll see brokerage CMAs recommended as parking spots, sometimes at attractive rates. There's one fact you must know first.
A brokerage CMA is not covered by deposit insurance. Korea's deposit insurer explicitly lists it as non-protected. (KDIC)
"So is it dangerous?" — I can't declare that. CMAs differ by type depending on what they invest in, and plenty of people use them without issue. The fact I can state is narrow: the deposit-insurance safety net is not there. Choosing that knowingly is entirely different from assuming "it's basically like a bank deposit."
Bank parking accounts are insured — principal plus interest up to ₩100 million per person, per institution. For money that absolutely must be there, I'd look at the insured side first.
Don't lean on the interest
Some people spend hours comparing parking-account rates. Let's do the math.
Park ₩3,000,000 at 3% for a year: ₩90,000 in interest, minus 15.4% tax = ₩76,140. That's about ₩6,300 a month.
Chase an extra 0.5 percentage point and you've gained roughly ₩1,000 a month. The value of an emergency fund was never the interest. It's that you don't reach for a loan or revolving credit when life hits — that's the return. Avoiding one 18% debt is worth years of parking-account interest.
Two small rules that keep it alive
Give it a name. Nicknaming the account "Emergency" is a surprisingly effective deterrent.
Define "emergency" in advance. Hospital bills, job loss, essential repairs — those count. Travel, a sale, a new gadget — those don't. In the moment, almost everything feels like an emergency; that's exactly why you write the definition while calm.
And if you use it, skip the guilt and just refill it. An emergency fund is meant to be spent. Spending and refilling is it working correctly.
Three lines
- "3–6 months" isn't an official standard. Set yours from income volatility and recovery time. Even ₩1 million counts if it blocks an emergency loan.
- Location beats amount: instant access + stable principal + separate from spending. Stocks and funds aren't emergency funds, and brokerage CMAs aren't deposit-insured (bank parking accounts are, up to ₩100M).
- ₩3M at 3% earns about ₩6,300/month after tax. The real return is never needing expensive debt.
This article is for information only and is not investment or financial advice. Rates and product terms change, and protection differs by product — verify with the institution and the KDIC before you commit. Calculations are illustrative under stated assumptions. Last checked: July 2026. If you spot an error, tell me and I'll correct it right away.
☕ If this was useful, you can support the blog with a coffee.
Support is optional, and it never changes what I write.
Comments
Post a Comment