Simulate your Financial Independence, Retire Early (FIRE) timeline and target amount. Enter your income, expenses, and assets to see when you can achieve financial freedom.
FIRE (Financial Independence, Retire Early) is a financial strategy aimed at achieving economic freedom for early retirement. This calculator simulates your FIRE timeline, target amount, and various scenarios based on your current financial situation, helping you build a concrete retirement plan.
Enter your current age, monthly after-tax income, monthly expenses, and current invested assets. Click a quick profile button to auto-fill values for common situations. For income, enter your actual take-home pay. For expenses, enter your real monthly spending. For assets, enter your investable financial assets (stocks, funds, deposits, etc.).
Set your expected annual return rate, inflation rate, safe withdrawal rate, and post-retirement expense ratio. For returns, reference long-term averages (stocks 7-10%, bonds 3-5%). For inflation, Korean average is 2-3%. The 4% safe withdrawal rate is based on the Trinity Study, and the 80% post-retirement expense ratio reflects reduced commuting and work-related costs.
Enter your expected pension amount, pension start age, and other retirement income (rental income, dividends, etc.) for a more accurate simulation. Check the National Pension Service website for your estimated pension amount.
Review your FIRE target amount, estimated achievement age, and savings rate. Use the FIRE type comparison, scenario comparison, and year-by-year simulation table to examine your retirement plan from various perspectives. Try adjusting values to compare different scenarios.
A 25-year-old professional saving 700K KRW monthly from a 2.5M KRW income plans for FIRE. With a 28% savings rate and 7% annual returns, FIRE is achievable around age 45-50. Starting early maximizes compound interest effects, making even small consistent investments crucial.
Dual-income couples can easily maintain savings rates above 50%. With 7M KRW combined income and 3.5M KRW in savings, FIRE is achievable within 12-15 years. Living on one income and investing the other entirely is an effective strategy.
Instead of full retirement, Barista FIRE involves part-time work to cover the gap in living expenses, requiring a lower target amount for faster achievement. Assuming 1.5M KRW monthly part-time income, it requires 30-40% less assets than Regular FIRE.
High-income earners (6M+ KRW monthly) can target Fat FIRE to maintain or even improve their current lifestyle in retirement. Combining high savings rates with aggressive investing enables comfortable early retirement in the mid-to-late 40s.
FIRE (Financial Independence, Retire Early) is a financial strategy and lifestyle movement focused on achieving economic freedom and early retirement. The core principle is saving and investing a large portion of income to build sufficient assets so that investment returns alone can cover living expenses. Achieving FIRE doesn't necessarily mean stopping work entirely; it means gaining the freedom to choose whether and how to work. Since the 2010s, FIRE has spread globally and has gained significant attention in Korea as the 'FIRE tribe' movement. The basic FIRE formula sets the target assets at 25 times annual living expenses (based on a 4% withdrawal rate).
The 4% rule originated from a 1998 study at Trinity University in the US. The research found that withdrawing 4% annually from a portfolio of 50% stocks and 50% bonds had a 95%+ chance of lasting 30+ years without depletion. For example, with 1 billion KRW in assets, you could withdraw 40 million KRW annually (about 3.33 million KRW monthly). However, since this research was based on US stock market data, it should be applied cautiously in Korea. Using a conservative 3-3.5% rate, or employing a dynamic withdrawal strategy that adjusts based on market conditions, is safer.
The savings rate is the single most important variable in determining your FIRE timeline. Intuitively, saving 50% of income means one year of work pays for one year of living expenses. Including investment returns, FIRE timelines by savings rate are approximately: 10% savings = 51 years, 20% = 37 years, 30% = 28 years, 50% = 17 years, 70% = 8.5 years, 80% = 5.5 years. Increasing your savings rate by 10% has a far greater impact on FIRE timing than raising investment returns by 1-2%. Therefore, both increasing income and controlling expenses are key to FIRE.
FIRE types vary based on target lifestyle. Lean FIRE targets 60% of current expenses with extreme frugality, requiring the lowest target amount. Regular FIRE maintains the current living standard as the standard FIRE approach. Fat FIRE targets 1.5x or more current spending for a comfortable retirement, requiring the highest target. Barista FIRE involves part-time work instead of full retirement to cover the gap, named after the idea of working at a cafe for health insurance benefits. Coast FIRE means your current investment assets will grow through compound interest to reach retirement-ready levels by age 65, so you only need to cover current expenses with current income without additional savings.
Achieving FIRE in Korea is possible but requires strategies different from the US. Korea's advantages include the National Pension System as a strong safety net. Receiving pension from age 65 reduces withdrawal needs from investment assets, effectively lowering the FIRE target. Additionally, the National Health Insurance system means medical expenses aren't as burdensome as in the US. However, considerations include high real estate asset proportions with low liquidity, relatively higher inflation rates (2.5-3%), and evolving financial investment income taxes. Realistically, dual-income couples maintaining a 40-50% savings rate can achieve FIRE around age 45-50 within 15-20 years.
Inflation is the most important yet easily overlooked factor in FIRE planning. Current monthly expenses of 2M KRW grow to about 2.56M KRW in 10 years, 3.28M KRW in 20 years, and 4.2M KRW in 30 years at 2.5% inflation. Therefore, FIRE target amounts must reflect real purchasing power at the time of retirement. This calculator factors in inflation until retirement when calculating target amounts. For example, current annual expenses of 24M KRW (2M KRW monthly) with a 4% withdrawal rate gives a target of 600M KRW, but assuming retirement in 20 years, the inflation-adjusted real target becomes about 980M KRW. Think in terms of real returns (nominal returns minus inflation) rather than nominal returns.
After achieving FIRE, the focus shifts from asset growth to asset preservation. During the accumulation phase (pre-FIRE), an aggressive portfolio of 80-100% stocks is suitable, but during the withdrawal phase (post-FIRE), a conservative allocation of 50-60% stocks + 30-40% bonds + 10-20% cash is recommended to reduce market volatility. Pay particular attention to 'Sequence of Returns Risk' - a major market decline right after retirement dramatically increases the risk of fund depletion. Keep 2-3 years of living expenses in cash or short-term bonds for safety. Additionally, employing a dynamic withdrawal strategy (4.5% during bull markets, 3% during bear markets) can significantly extend fund longevity.
This calculator is provided for simulation purposes only. Actual investment returns may vary significantly based on market conditions. Results assume constant returns and inflation in a simplified model, and do not account for taxes (capital gains tax, comprehensive financial income tax), health insurance premium changes, or unexpected expenses. FIRE plans should be regularly reviewed and adjusted to actual financial situations. Please consult a certified financial planner for important financial decisions.
FIRE (Financial Independence, Retire Early) is not simply about early retirement but a financial strategy to expand life choices through economic freedom. The core of FIRE is 'reducing consumption and maximizing savings rate to rapidly accumulate investment assets.' While traditional retirement plans target age 65, FIRE aims to achieve financial independence in your 40s-50s. FIRE requires a high savings rate (50%+ recommended), consistent investing, and expense control. In Korea specifically, safety nets like National Pension and retirement pension can lower the effective FIRE target amount.
The most important variable in achieving FIRE is not the absolute amount of income but the savings rate. A high savings rate creates two simultaneous effects: First, more money is invested to rapidly build assets; second, becoming accustomed to lower spending levels reduces the target amount needed for retirement. For example, with 5M KRW monthly income and a 20% savings rate (1M KRW savings), it takes about 37 years, but at 50% (2.5M KRW savings), it's cut to about 17 years - less than half. While increasing income is important, guarding against lifestyle inflation (lifestyle creep) and directing additional income to savings is the most reliable way to accelerate FIRE.
When executing FIRE in Korea, several Korea-specific factors must be considered. First, the National Pension is a powerful FIRE safety net. Monthly pension received from age 65 reduces withdrawals from investment assets, effectively lowering the FIRE target. Second, understanding the tax structure is essential. Maximize tax-advantaged accounts like ISA, pension savings, and IRP, and plan withdrawal strategies considering the comprehensive financial income tax threshold (over 20M KRW annually). Third, while residential real estate should be excluded from FIRE assets in principle, it has advantages over rent in terms of housing cost savings. Realistically, dual-income couples maintaining a 40-50% savings rate for 15-20 years can achieve FIRE around age 45-50.