Retirement & Finance Β· π°π· Korea
Korean FIRE Retirement Calculator
Korean FIRE calculator with ISA, pension savings, and National Pension simulation β retirement age and 100-year asset curve.
About this tool
Korean FIRE Retirement Calculator localizes the U.S. FIRE rule (4% safe withdrawal / 25Γ expenses) to Korean reality. It bakes in ISA tax-free shelters (β©20M/yr), pension-savings deductions (β©6M/yr credit), IRP limits (β©9M/yr), and National Pension start ages (60 / 65 / 70). Enter inflation and real return to project a month-by-month asset curve through age 100, plus an optional 1,000-run Monte Carlo for the 95% safe-age and ruin-risk age. Recommended conservative withdrawal of 3.0β3.5% is calibrated against KOSPI and Korean treasury history. All calculation is in-browser; salary and asset data never leave your device.
Use cases
Scenario 1
Mid-30s worker sizing the FIRE target
At β©2.5M monthly spend and 4% real return, target β©900M as the FIRE corpus and see at what age current savings get you there.
Scenario 2
ISA vs pension-savings tax effect
Compare FIRE timing without ISA vs. fully maxed ISA + pension savings β typical acceleration is 5β10 years.
Scenario 3
NPS start-age scenarios (60 / 65 / 70)
Delaying NPS payouts grows the lifetime annuity β see how each option flexes the asset curve.
Scenario 4
Ruin-risk age check
For a β©5M asset, β©3.5M/mo spend, retire-at-60 plan, find the ruin-risk age inside the 95% Monte-Carlo band.
Scenario 5
4% rule vs. Korea-adjusted 3.5%
Compare the U.S. 4% withdrawal vs. a Korea-adjusted 3.5% to choose a safer rate.
Features
- Auto-apply Korean tax shelters (ISA / pension savings / IRP)
- NPS start-age scenarios at 60 / 65 / 70
- 100-year monthly asset curve + 1,000-run Monte Carlo
- Ruin-risk age + 95%-confidence safe age
- Recommended conservative 3.0β3.5% withdrawal calibrated to Korea
- Downloadable PNG result card
- In-browser only β wealth and income never leave the device
Frequently asked
- Q. Does the 4% rule hold in Korea?
- A. It is back-tested on U.S. data and can overshoot risk in Korea. The tool offers a 3.0β3.5% rate calibrated to KOSPI and Korean treasuries.
- Q. How much does ISA help FIRE timing?
- A. Up to β©20M/yr in contributions, β©2M tax-free at maturity (β©4M for low-income), and 9.9% flat tax on the rest β typically pulling FIRE forward 5β10 years vs. not using it.
- Q. How is National Pension modeled?
- A. Modeled as an inflation-linked lifetime annuity starting at 60 / 65 / 70. Expected monthly payout is estimated from contribution months and standard income.
- Q. What real return should I plug in?
- A. Assume ~2.5% Korean inflation; a conservative real return of 3β5% is reasonable, with 4% common for a KOSPI + U.S. index blend.
- Q. Is this investment or tax advice?
- A. No β it is a reference simulation using published rates and formulas. Tailor allocation to your own risk profile and market conditions.
Sources / references
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How we run it / disclaimer
This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.