If you’re living in Korea, you’ve probably heard of the ISA — the Individual Savings Account. Often called a “만능통장” (all-in-one account), the ISA lets you hold deposits, funds, ETFs, and even stocks in a single account while enjoying tax-free benefits on your returns. But with multiple ISA types available, choosing the right one can be confusing. In this guide, we’ll break down the ISA account types — Standard, Low-Income, and Youth — along with the three management styles: Brokerage, Trust, and Discretionary.
What Is an ISA Account?
ISA stands for Individual Savings Account, officially called 개인종합자산관리계좌 in Korean. Introduced in 2016, it has been continuously improved since. The core benefit is that you can hold various financial products in one account and receive tax-free or reduced-tax treatment on your gains.
Normally, interest and dividends from financial products are taxed at 15.4% (14% income tax + 1.4% local income tax) in Korea. However, gains within an ISA account are tax-free up to a certain limit, and any excess is taxed at a reduced rate of just 9.9%.
Even more powerful is the profit-loss netting feature. If Product A earned +₩1,000,000 and Product B lost -₩300,000, you only pay tax on the net gain of ₩700,000. In a regular account, you’d owe tax on the full ₩1,000,000 gain — making the ISA significantly more advantageous.
ISA Account Types Compared: Standard vs Low-Income vs Youth
ISA accounts are divided into three types based on income level and age. The biggest difference is the tax-free limit.
| Category | Standard (일반형) | Low-Income (서민형) | Youth (청년형) |
|---|---|---|---|
| Eligibility | Korean residents aged 19+ | Workers with gross salary ≤ ₩50M or business owners with total income ≤ ₩38M | Ages 15–34, with gross salary ≤ ₩50M or total income ≤ ₩38M |
| Tax-Free Limit | ₩2,000,000 | ₩4,000,000 | ₩4,000,000 |
| Tax on Excess | 9.9% separate taxation | 9.9% separate taxation | 9.9% separate taxation |
| Mandatory Holding Period | 3 years | 3 years | 3 years |
| Annual Contribution Limit | ₩20,000,000 | ₩20,000,000 | ₩20,000,000 |
| Total Contribution Cap | ₩100,000,000 | ₩100,000,000 | ₩100,000,000 |
The key differentiator is the tax-free limit. The Standard type exempts net gains up to ₩2 million from tax, while Low-Income and Youth types double that to ₩4 million. When comparing ISA account types, Low-Income and Youth are clearly more beneficial if you qualify.
If you meet the eligibility requirements, always choose Youth or Low-Income over Standard. The Youth type has an age limit (15–34), so if you’re in that range, open one as soon as possible.
You can only have one ISA account per person. Your type choice directly determines your tax-free limit, so choose wisely.
Management Styles: Brokerage vs Trust vs Discretionary
Another important factor when comparing ISA account types is the management style. Depending on how you want to invest, you can choose from Brokerage (중개형), Trust (신탁형), or Discretionary (일임형).
| Category | Brokerage (중개형) | Trust (신탁형) | Discretionary (일임형) |
|---|---|---|---|
| Who Manages | You (self-directed) | You instruct, institution executes | Institution manages for you |
| Available Products | Korean stocks, ETFs, funds, REITs, ELS | Deposits, funds, ETFs, ELS (no direct stock trading) | Funds, ETFs (no direct stock trading) |
| Fees | Brokerage commission | Trust fee (0.1–0.2%/year) | Management fee (0.1–0.5%/year) |
| Deposit Protection | Only unused cash is protected | Deposits protected up to ₩50M | Not applicable |
| Best For | Self-directed investors | Safety-focused investors | Hands-off investors |
The Brokerage ISA has been the most popular since its introduction in 2021. The reason is simple: it’s the only ISA type that lets you directly invest in Korean listed stocks. Combined with low-cost ETFs for diversification, the Brokerage type suits most investors.
The Trust type has a unique advantage — you can include bank deposits within the ISA. If you’re worried about losing principal, you can stick with fixed deposits while still enjoying the tax-free benefits.
The Discretionary type lets a financial institution invest on your behalf. It’s convenient if you lack time for investing, but keep in mind that fees are relatively higher and returns aren’t guaranteed.
ISA Tax Savings in Numbers
Let’s look at the actual tax savings with a concrete example. Suppose Worker B (monthly income ₩3 million) uses a Low-Income Brokerage ISA and achieves ₩5 million in net gains over 3 years.
| Item | Regular Account | ISA (Low-Income) |
|---|---|---|
| Net Gains | ₩5,000,000 | ₩5,000,000 |
| Tax-Free Amount | ₩0 | ₩4,000,000 |
| Taxable Amount | ₩5,000,000 | ₩1,000,000 |
| Tax Rate | 15.4% | 9.9% |
| Tax Owed | ₩770,000 | ₩99,000 |
| Tax Savings | — | ₩671,000 saved |
Same ₩5 million gain, but over ₩670,000 difference in taxes. The larger your gains and the higher your tax-free limit, the more you save.
On top of that, when your ISA matures, you can transfer the balance to a pension savings account (연금저축) or IRP and receive an additional tax deduction of 10% of the transferred amount (up to ₩3 million). This means you can enjoy the ISA’s tax-free benefits first, then get pension tax deductions — a “double tax saving” strategy.
“When transferring ISA maturity funds to a pension account, you can receive an additional tax deduction of 10% of the transfer amount (up to ₩3 million).”
Source: Mirae Asset Securities ISA Pension Transfer Guide
Important: You must transfer within 60 days of the maturity date. Withdrawing to a regular account first and then depositing into a pension account won’t qualify. Always use the “pension transfer” feature in your financial institution’s app.
ISA Account Opening Checklist
Here’s what to check before opening your ISA account.
Eligibility Requirements
- Age: 19 or older (15+ if you have earned income)
- Residency: Must be a Korean resident
- Income: Standard type has no income requirement; Low-Income and Youth types require gross salary ≤ ₩50M or total income ≤ ₩38M
- Restriction: Individuals subject to comprehensive financial income taxation (financial income exceeding ₩20M) in any of the past 3 tax years cannot open an ISA
Where to Open
ISA accounts can be opened at both banks and securities firms, but your options depend on the management style.
- Brokerage: Securities firms only (Kiwoom, Mirae Asset, Korea Investment, etc.)
- Trust: Both banks and securities firms
- Discretionary: Both banks and securities firms
If you want to invest directly in stocks or ETFs, open a Brokerage type at a securities firm. If you prefer safe, deposit-based investing, a Trust type at a bank works well too.
Key Reminders
- One account per person: You can only have one ISA. If you already have one, you must close it before opening a new one.
- 3-year mandatory holding period: Closing before 3 years means losing all tax-free benefits — you’ll be taxed at the regular 15.4% rate.
- Limited mid-term withdrawals: You can withdraw up to your contributed principal, but your contribution limit decreases accordingly.
- No foreign stocks: Direct investment in foreign stocks is not allowed in ISA. Only domestically listed ETFs (including those tracking foreign indices) are eligible.
Frequently Asked Questions
What happens when my ISA matures?
At the 3-year maturity, you have three options. First, you can extend (re-enroll) and keep investing. Second, you can close the account and receive your gains. Third, you can transfer to a pension savings account or IRP for an additional tax deduction of up to ₩3 million. Choose the option that best fits your investment strategy at the time.
Can I switch from Standard to Low-Income type?
Yes, you can. If your income changes and you qualify for the Low-Income type, you can apply for a switch at your financial institution. After switching, your tax-free limit increases from ₩2 million to ₩4 million. You’ll need an income verification certificate from the National Tax Service (Hometax).
Should I have both an ISA and a pension savings account?
Since they serve different purposes, using both is ideal. The ISA is a mid-term (3+ years) tax-saving account, while pension savings are for long-term retirement planning. You can even hold safe products like deposits and savings within your ISA, so use it according to your risk tolerance.
Summary: How to Choose the Right ISA
- Check your tax-free limit first: If your gross salary is ≤ ₩50M, go with Low-Income (₩4M tax-free). If you’re 34 or younger, choose Youth (₩4M). Both offer double the benefit of Standard (₩2M).
- Pick your management style: Want to invest yourself? Choose Brokerage (securities firm). Prefer stability? Go with Trust (bank).
- Use the ₩20M annual limit wisely: Even if you can’t fill the full limit, contribute whenever you can. Unused limits carry over to the next year.
- Hold for at least 3 years: You must meet the mandatory period to keep tax-free benefits. Don’t put money you’ll need within 3 years into an ISA.
- Consider pension transfer at maturity: After enjoying ISA tax benefits, transfer maturity funds to a pension account for additional tax deductions of up to ₩3 million.
The ISA is one of Korea’s most powerful tax-saving tools designed by the government. If you’re eligible but haven’t opened one yet, download a securities firm app and set up your ISA today. For more details on ISA policies, visit the Financial Services Commission ISA FAQ page.
This article is for informational purposes only and does not constitute investment advice or tax consultation. Please consult a qualified professional for specific financial decisions.
