Dollar Investment Tax Calculator

Compare foreign-currency investment returns after tax, fees, and exchange-rate assumptions.

Dollar investment tax calculator

Compare FX deposit, FX cash, FX RP/MMF, Korea-listed ETF, and overseas-listed ETF after FX spread, fees, tax, and exchange-rate movement.

Best method

Overseas-listed ETF

Gap to #2: ₩30,385

Best net profit

₩1,601,032

Best net proceeds

₩21,601,032

Best return

8.0%

Annualized return

8.0%

Estimated tax

₩0

The Korean lib keeps 2026 assumptions: interest and dividend tax at 15.4 percent, overseas ETF transfer tax at 22 percent after a KRW 2.5 million basic deduction, and the KRW 20 million financial-income threshold. This English finance calculator uses the Korean feature lib for the displayed numeric result. KRW is used for money inputs and outputs in this batch, fixing the old P2 USD scenario stub for these pages.

Related calculators

Dollar investment tax calculator

This English guide translates the Korean dollar-investment tax comparison for FX deposits, FX cash, FX RP or MMF, Korea-listed ETFs, and overseas-listed ETFs. The calculator now displays KRW inputs and outputs and calls the Korean pure function.

What is compared

The model compares five methods: FX deposit, cash FX holding, FX RP or MMF, Korea-listed ETF, and overseas-listed ETF. Each method has a different spread, fee, yield type, expense ratio, and tax classification.

The user enters KRW investment amount, base exchange rate, FX movement, holding months, spread discount, annual yield, tax mode, marginal rate, and other financial income. The result ranks methods by after-tax net profit.

Tax assumptions preserved

The Korean lib keeps 15.4 percent interest/dividend tax for interest and dividend-style income. Overseas-listed ETF gains use 22 percent transfer tax after the KRW 2.5 million basic deduction. Domestic ETF gains can be treated as dividend income.

The KRW 20 million financial-income threshold matters when tax mode is comprehensive. If other financial income already uses the threshold room, additional interest or dividend income may be taxed at the selected marginal rate instead of ordinary withholding.

FX spread and return reading

FX spread discount changes both buying cost and selling cost. A high headline yield can lose to a lower-yield method if the spread, ETF expense ratio, trading fee, or tax treatment is worse.

The result shows best method, net profit, net proceeds, return, annualized return, and estimated tax. Use it for scenario comparison only; actual brokerage costs, account type, tax residency, and product structure can change the final answer.