Tax-Loss Harvesting
Even though you took a loss, you can use it to reduce taxes. However, there are constraints on applying it under Korean tax law, so it is important to understand it accurately.
What Is Tax-Loss Harvesting?
Tax-loss harvesting is a strategy of selling assets with unrealized losses at year-end to create realized losses, and offsetting these against gains on other assets to reduce the tax owed.
Basic principle: Asset A: realized gain of about $3,700 -> subject to tax Asset B: loss of about $2,200 -> sold to realize the loss Net taxable gain: about $3,700 - about $2,200 = tax paid only on about $1,500
If you buy another asset that is similar but not identical in place of the sold asset B, you can maintain market exposure while using the loss.
U.S. vs. Korea: Tax-Law Differences
U.S.: - Stock/ETF sale gains and losses are aggregated annually - Losses can offset gains - In the U.S., tax-loss harvesting is a common tax-saving strategy
Korea (as of 2024): - Overseas stocks/ETFs: annual gain-loss netting is possible. A 22% capital gains tax after a 2.5 million KRW basic annual deduction - Domestic stocks: tax-free unless you meet the major-shareholder criteria (major shareholders are subject to capital gains tax) - Domestic-listed ETFs: distributions are subject to dividend income tax, and sale gains are taxed separately
For investors in overseas stocks/ETFs, the concept of tax-loss harvesting is applicable. Note that tax law changes often, so confirm the latest content through the National Tax Service or a tax accountant.
This service's results are pre-tax figures. Consult a professional for tax calculations.
Watch Out for the Wash-Sale Rule
In the U.S., there is a wash-sale rule: if you buy an identical or substantially identical asset within 30 days before or after the sale, the loss is not recognized.
Korea has no official wash-sale rule, but the principle of substance-based taxation may apply.
Practical use: overseas-stock investors can review assets with unrealized losses before year-end and consider a strategy of realizing losses to reduce that year's taxable gains. Just be sure to calculate the trading costs and tax effects comprehensively.
よくある質問
Q. Doesn't realizing a loss go against a long-term investment strategy?
If you immediately replace it with a similar asset, you can maintain market exposure while gaining a tax benefit. For example, if a loss occurred in an S&P 500 ETF, you can sell it and buy another similar S&P 500 ETF. In that you do not completely exit the market, it is compatible with a long-term investment strategy.
Q. Is this strategy valid in an IRP or ISA account?
Within an IRP (Individual Retirement Pension) and an ISA (Individual Savings Account), there is no immediate taxation when trading, so tax-loss harvesting works differently. Gains and losses within an ISA are netted and taxed at maturity, offering a tax benefit. It is important to understand and use the tax structure of each account type.
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