Account Comparison Calculator
Compare regular, ISA, pension savings, IRP, and scheduled account options with cautious after-tax projections.
Projection inputs
Use one annual contribution and return assumption to compare account wrappers on the same basis.
10M KRW
50M KRW
Comparison summary
The bar chart uses after-tax value plus modeled tax credits where applicable.
Account detail
Tax treatment is simplified so the account wrappers can be compared at a glance.
| Account type | After-tax value | Estimated tax | Tax savings | Constraints |
|---|---|---|---|---|
| Regular account | ₩54,932,524 | ₩323,789 | ₩0 | No ISA exemption; taxable gains use the non-equity share as a simple assumption. |
| Standard ISA | ₩54,933,938 | ₩322,375 | ₩1,414 | Applies the basic ISA exemption and separate tax assumption. |
| Low-income ISA | ₩55,131,938 | ₩124,375 | ₩199,414 | Salary input is within the low-income ISA salary threshold. |
| Pension savings | ₩60,206,313 | ₩0 | ₩4,950,000 | Tax credit is added as a separate benefit; future pension withdrawal tax is not modeled. |
| IRP | ₩62,681,313 | ₩0 | ₩7,425,000 | IRP credit limit is modeled simply; investment and withdrawal restrictions are not fully modeled. |
| National Growth ISA | ₩54,933,938 | ₩322,375 | ₩1,414 | Scheduled or informational treatment; not final statutory advice. |
| Youth ISA | ₩55,131,938 | ₩124,375 | ₩199,414 | Age input is within the youth-style reference range. |
Notes and assumptions
About Account Comparison Calculator
Compare simplified regular-account, ISA and pension-account scenarios.
Enter annual contributions, whole years, assumed return, allocation, salary and age. Contributions are added at year end.
Read the modeled balance and benefit separately. Pension columns add a tax-credit estimate to balance, not a cash-withdrawal value or a suitability ranking.
The calculation or rendering runs in this browser tab. Copy, download and share actions make the chosen output available outside this tab.
Worked example
- Input / settings
- Annual contribution 1,000,000 KRW; 1 year; return 0%; salary 50,000,000; age 30
- Action
- Compare accounts
- Result
- Regular/standard ISA 1,000,000; pension savings/IRP 1,165,000, including a modeled 165,000 tax credit.
Calculation model
Regular model tax = max(growth, 0) × (1−entered equity allocation) × 15.4%; ISA model tax = max(growth−exemption, 0) × 9.9%.
Pension modeled benefit = min(annual contribution, credit cap) × applicable modeled credit rate × years; displayed pension value = balance + benefit.
Scope and limits
- 1–100 years. Pension credit model caps pension savings at 6 million and combined retirement-account assumptions at 9 million KRW, using 16.5% or 13.2% with local-tax effect for the entered salary band.
- Pension columns are alternative scenarios, not additive entitlements. Omits pension withdrawal tax, early-exit penalties, tax liability available for credits, fees, contribution enforcement and full income/eligibility tests.
- Growth/youth columns are informational assumptions; regular-account taxable allocation and ISA gains are simplified. Salary and age alone cannot establish legal eligibility.
Frequently asked questions
- Does the highest displayed amount identify the best account?
- No. Access restrictions, withdrawal taxation, permitted assets, available tax credits and risk differ. The display compares only the assumptions entered here.
Sources and review dates
- Restriction of Special Taxation Act, Article 91-18 Reviewed
Ordinary ISA exemptions, term, contribution and tax rules.
- Income Tax Act, Article 59-3 Reviewed
Pension tax-credit caps and income bands; the comparison model has additional simplifications.
- Income Tax Act, Article 129 Reviewed
Standard interest withholding; exceptions require separate treatment.
- Local Tax Act, Article 103-13 Reviewed
Local income tax on withholding.
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