ISA Calculator
Compare ISA gains, tax treatment, and after-tax outcomes for stock, ETF, bond, RP, and deposit-income scenarios.
ISA scenario
Choose account and asset branches, then calculate trade or dividend flow in separate tabs.
years
Common stock or sale inputs
Foreign assets use the exchange-rate field for a simple KRW conversion.
KRW
KRW
shares
KRW
Used for foreign stock and foreign ETF branches.
KRW
20M KRW
KRW
ISA outcome comparison
Gains, taxes, and after-tax values are shown side by side for regular accounts and ISA.
Trade gain or loss₩1,500,0001.5M KRW
Net ISA income after offset₩1,500,0001.5M KRW
Modeled exemption₩2,000,0002M KRW
Applied annual contribution limit₩20,000,00020M KRW
Applied total contribution limit₩100,000,000100M KRW
Regular-account tax₩015.4%
ISA tax₩09.9%
After-tax value₩6,500,0006.5M KRW
Tax savings₩0
Notes and assumptions
Domestic listed-stock capital gains are modeled as non-taxable in a regular account; dividends remain taxable.
Financial-income comprehensive taxation eligibility and other account restrictions are not fully modeled.
Reference date: 2026-04-29. ISA exemption, separate-tax, and current contribution-limit assumptions follow the Restriction of Special Taxation Act information available on the reference date. Super ISA limits are modeled from the Financial Services Commission reform proposal.