Derivation Chain
Step 1
Real estate and home ownership policy controversy
→
Step 2
Post-retirement income decline vs. fixed cost maintenance issue
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Step 3
Simulation of monthly fixed cost changes by item before and after retirement
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Step 4
Execution guide to redesign fixed cost structure to match income level
Problem
A 58-year-old office worker faces a sharp drop in monthly income from 4,000,000 KRW (approx. $3,000) to 1,500,000 KRW (approx. $1,125) (National Pension + Retirement Pension) after retirement, but cannot see the full picture of how to reduce current monthly fixed costs (5 insurance policies at 420,000 KRW (approx. $315), 3 telecom lines at 180,000 KRW (approx. $135), 7 subscription services at 90,000 KRW (approx. $67.50), maintenance fees at 250,000 KRW (approx. $187.50), etc.). Reviewing each item individually requires calling each insurance company, telecom provider, and subscription service separately, and verifying cancellation or change penalties and disadvantages takes several days.
Solution
A web service where users input current monthly fixed costs, calculates the appropriate fixed cost ratio relative to target post-retirement income, and provides itemized reduction priorities and execution methods. Key features: (1) input and automatic classification of fixed cost items (essential/adjustable/removable), (2) visualization and alerts for fixed cost ratio relative to target income, (3) guidance on reduction methods, expected savings, and cautions (e.g., penalties) per item. Differentiation: not a simple household ledger, but a tool for redesigning fixed cost structures tailored to the specific transition point of retirement.