The joy of payday lasts about three days. Then you check the balance and think “where did it all go this month?” — without having splurged on anything.
“Split your accounts” is advice you can find anywhere. But where do the numbers come from — four accounts, fifty-thirty-twenty? This article works backwards from that question. We opened the statutes and separated what Korean law actually fixes from what is simply a widely-copied habit.
1. What the law actually fixes. Two things only — the deposit protection cap of ₩100 million (from 1 September 2025, principal and interest together) and the 15.4% on interest (14% income tax plus a local tax of 10% of that).
2. What people get wrong. Neither “four accounts” nor “50 : 30 : 20” appears in any statute. That does not make them useless — it means what you must respect and what you get to choose are mixed together.
3. What to do. Splitting across institutions starts to matter once one of them holds more than ₩100 million. Below that, separating the one account your fixed costs leave from beats adding accounts.
What the law fixes, and what is habit
| Item | Basis | Character |
|---|---|---|
| Deposit protection of ₩100 million | Depositor Protection Act Enforcement Decree art. 18(7) | A figure set in law |
| The cap applied separately by purpose | Same paragraph, item 1(a)–(d) | A structure set in law |
| 14% withholding on interest | Income Tax Act art. 129(1) item 1(d) | A rate set in law |
| The commonly quoted 15.4% | Not a figure in the statute | Explained as 14% plus local income tax |
| Four accounts | None | A widely used arrangement |
| 50 : 30 : 20 | None | A conventional starting point |
| Auto-transfer the day after payday | None | A trick for creating order |
The next two sections are the part fixed by law. Everything after that is the part you choose.
The cap is not ₩50 million any more — it is ₩100 million
“Fifty million protected” has been the standing figure for years. Open the Enforcement Decree and it reads differently now.
“The payment limit of insurance money under art. 32(2) of the Act shall be 100 million won.”
— Depositor Protection Act Enforcement Decree, art. 18(7), amended 11 Mar 2016; 27 Dec 2022; 17 Oct 2023; 29 Jul 2025 (translated)
The last amendment in that list is 29 July 2025, and the rule took effect on 1 September 2025. The Korea Deposit Insurance Corporation puts it as “from 1 September 2025, protection rises from ₩50 million to ₩100 million, principal and interest included” — applied per person, per institution.
“So does a deposit opened before then fall under the old cap?” No. The reference point is not the day you opened the account but the day the insured event occurs — the cap in force when the institution actually fails and insurance money is paid. Deposits opened before 1 September 2025 are covered to ₩100 million on today's rules.
If you arranged your accounts around ₩50 million, the boundary has moved.
Here is what the raised cap looks like in money: what you hold against what is covered.
And the law counts by purpose, not by account
Item 1 of the same paragraph matters more. Even inside a single institution, these four groups each get their own cap.
| Group | Provision | How the cap applies |
|---|---|---|
| Defined-contribution and individual retirement pensions (DC, IRP) | 1(a) | Its own cap — and per participant |
| Pension savings accounts (plus older pension savings) | 1(b) | Its own cap — the three combined into one |
| Insurance payouts (excluding the above) | 1(c) | Its own cap |
| Everything else — ordinary deposits and instalment savings | 1(d) | All of it pooled into one cap |
| Individual Savings Account (ISA) | Item 2 | Combined with 1(d) — not counted separately |
Three readings follow.
- Ten accounts at one bank still sit inside 1(d) as a single pool. A spending account and a savings account at the same bank are, for protection purposes, ₩100 million between them.
- Retirement pensions, pension savings and insurance stack on top. Money with a different purpose is recognised as a different bucket by the statute itself.
- The ISA looks like an exception and is not one. Item 2 states that it is applied “by combining it with the claims under item 1(d).” Opening an ISA does not add a bucket.
Easy to misread. This clause answers “how much do I get back if the institution fails,” not “how many accounts should I open.” It sits at a different level from everyday money management. It starts to bite only when a large balance piles up in one place.
“15.4%” appears in no statute at all
Interest tax in Korea is almost always quoted as 15.4%. Open the Income Tax Act and that figure is absent.
“1. For interest income, the following rates …
(d) for other interest income, 14 out of 100”
— Income Tax Act, art. 129(1) item 1 (withholding rates) (translated)
What the Income Tax Act fixes is 14%. The remaining 1.4 points sits in a different statute.
“An amount equivalent to 10 out of 100 of the income tax withheld shall be specially collected as individual local income tax.”
— Local Tax Act, art. 103-13(1) (special collection) (translated)
Substitute and you get 14% + (14% × 10%) = 14% + 1.4% = 15.4% (our calculation). The 1.4% is not a rate of its own but “10% of the 14%.” Which is why no amount of searching the Income Tax Act produces 15.4% — that piece is local tax, not national tax.
One more thing in the same clause: “profits from non-business loans” are taxed at 25 out of 100. Lending money privately is taxed differently from a bank deposit. Interest received through a registered online investment-linked finance provider (P2P), however, returns to 14%.
For an after-tax maturity figure, put your numbers into the savings maturity calculator — this rate is already built in.
If 15.4% appears in no statute, here are the numbers that do.
From here on, it is the part you choose
Money leaks for a simple reason: everything arrives in and leaves from one account. With no line between fixed costs and spendable money, “the balance” feels like “what I can spend.”
So you separate by purpose and make the money scatter automatically on payday. The arrangement below is convention, not law.
| Account | What it holds | One rule |
|---|---|---|
| 1. Salary | Where the paycheck lands | Nothing is ever spent from here |
| 2. Fixed costs | Rent, utilities, phone, subscriptions | Point every standing order at this one |
| 3. Living expenses | Food, transport, shopping | Attach your debit card to this account only |
| 4. Savings and emergency | Deposits, investments, buffer | Taken out first, not from what is left |
The count matters less than the order. Schedule the transfers for the day after payday, so the money moves before you touch it. Salary account → fixed costs, savings and buffer → whatever remains is living expenses. Saving first and spending the rest then happens by construction.
50 : 30 : 20 is the usual starting split. It appears in no statute and in no agency guidance. Running it for a few months and moving the numbers to fit your life is the normal outcome. To see what actually lands in the account first, try the take-home pay calculator.
Where does “three to six months of expenses” come from?
This article used to print “an emergency fund of three to six months of living expenses” and say nothing about where it came from. This time we followed it back.
The agency side is empty. The figure is not in the Financial Supervisory Service, the Korea Deposit Insurance Corporation or the Bank of Korea. The US Consumer Financial Protection Bureau, by contrast, publishes a report with actual survey data behind it — and the starting point it gives is far smaller than three to six months (the comparison is in the emergency fund article).
So who does say it? With a name and an affiliation attached, it turns up as advice from a bank private banker. Financial News quoted Kim Yun-mi, PB team head at Shinhan Premier PWM's Ichon-dong centre.
“Salaried workers are advised to hold three to six months of living expenses as an emergency fund, but freelancers can face longer income gaps and need six to twelve months of living expenses secured.”
— Kim Yun-mi, PB team head, Shinhan Premier PWM Ichon-dong, in Financial News, “Freelancers with uneven income — an emergency account of at least six months is essential” (8 December 2025)
That settles what kind of number it is. Not a statute and not an agency benchmark, but a target a practitioner recommends. And the same practitioner gives different numbers for different situations — three to six months for salaried workers, six to twelve for freelancers. It is not a constant that applies to everyone.
| Situation | Emergency fund advised | What kind of source |
|---|---|---|
| Salaried | 3–6 months of expenses | PB advice — not statute or agency |
| Freelance / irregular income | 6–12 months of expenses | Same advice, raised for the situation |
| Deposit protection cap | ₩100 million | Enforcement Decree art. 18(7) |
So this article does not treat “three to six months” as something the law fixes. Not a claim that it is wrong — a rule that we say whose number it is. Start from whether your income is regular, then pick the number of months.
Questions people ask
Is it fine to open this many accounts?
Yes. Instant-access accounts can be opened freely, and most banking apps let you carve one into purpose-labelled sub-accounts. Just remember that accounts split within the same bank are pooled under 1(d) for protection purposes.
Should I split across banks because of deposit protection?
It starts to matter once one institution holds more than ₩100 million. Below that, protection is a weak reason to split. Retirement and pension savings already sit in different buckets — which works much like splitting across banks.
Does a credit card break the method?
A debit card is easier for spending control. With a credit card, set the living-expenses account as the settlement account and spend only within that balance — the effect is the same.
Do more accounts earn more interest?
The rate has nothing to do with the number of accounts. The statutory 14% attaches to interest, not to accounts. Growing the interest is a question of rate and time — see the compound interest calculator.
Sources
- Enforcement Decree of the Depositor Protection Act — art. 18 (Korean statute portal, checked August 2026). Source for “the payment limit shall be 100 million won” in paragraph 7 (amended 29 Jul 2025), the separate caps under item 1(a)–(d) (with (a) applied per participant and (b) combining the pension-savings claims), and item 2's “by combining it with the claims under item 1(d)” for ISAs. Quotations are our translation.
- Income Tax Act — art. 129 (withholding rates) (Korean statute portal, checked August 2026). Source for item 1(d)'s “14 out of 100” and item 1(b)'s 25% on non-business loan profits with the online investment-linked finance exception at 14%.
- Local Tax Act — art. 103-13 (special collection) (Korean statute portal, checked August 2026). Source for paragraph 1's “an amount equivalent to 10 out of 100 of the income tax withheld shall be specially collected as individual local income tax” — where the remaining 1.4 points of 15.4% comes from.
- Korea Deposit Insurance Corporation — agency guidance — “From 1 September 2025 protection rises from ₩50 million to ₩100 million (principal and interest included).” Source for the 1 September 2025 effective date, principal and interest included, the per-person, per-institution basis, the sectors covered (banks, savings banks, insurers, investment firms, mutual finance), and the separate caps for retirement pensions, pension savings and accident insurance proceeds.
- Checked directly. “15.4%,” “four accounts,” “50 : 30 : 20” and “the day after payday” appear nowhere in either statute. The law-versus-habit split in this article is the result of opening the clauses ourselves.
- Financial News (press — not an agency source) — “Freelancers with uneven income — an emergency account of at least six months is essential” (8 December 2025, by Seo Ji-yun). Carries “salaried workers are advised to hold three to six months… freelancers… six to twelve months” as advice from Kim Yun-mi, PB team head at Shinhan Premier PWM Ichon-dong. The only source we found that attaches a name and an affiliation to the three-to-six-month figure, and it is practitioner advice, not a statute or an agency benchmark — stated as such in the body.
Where to check further
- Whether your institution is actually insured. Not every financial company is covered — this article deals only with the structure of the cap. Check company by company in the Korea Deposit Insurance Corporation's insured-institution lookup (or call 1588-0037), and look for the deposit protection notice on the sign-up screen for the product itself. Where to actually park the money is covered in the emergency fund article.
- The rate you would actually get. This article stops at the structure of rates and caps and recommends no product — compare headline and best rates on the Korea Federation of Banks consumer portal. The catch in a “best rate” (the conditions you must all satisfy to get it) is pulled apart with real products in deposits versus instalment savings, and for an after-tax maturity figure use the savings maturity calculator.
- How many accounts and what split suits you. No statute governs this, so the article goes only as far as separating what is fixed from what you choose. As the Financial News piece above shows, practitioner advice is available in the press with a name and affiliation attached; for free counselling there is the Korea Inclusive Finance Agency (1397). When a blog or video hands you “four accounts, 50 : 30 : 20,” check whether anything is cited — as far as this article could establish, no statute says it.
As of August 2026. The cap and its purpose-based buckets were read from art. 18 of the Depositor Protection Act Enforcement Decree, and the interest rate from art. 129 of the Income Tax Act; “three to six months” is flagged in the text as a bank PB's advice rather than an agency benchmark, with the citation attached, and the account arrangement and the ratios are flagged as convention with no statutory basis. General information — what fits depends on your own finances, and this is not a recommendation of any financial product.
