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Asset Allocation Simulator
Enter your assets (cash, investments, real estate, etc.) and liabilities (loans, debt, etc.) to instantly calculate your net worth. Compare against age-group averages and set a personal goal.
Assets
Liabilities
Compare Against Age-Group Averages
| Age Group | Median Net Worth (2+ person HH) | vs. You |
|---|---|---|
| 20s | ¥1,650,000 | — |
| 30s | ¥5,260,000 | — |
| 40s | ¥8,250,000 | — |
| 50s | ¥12,530,000 | — |
| 60s | ¥18,190,000 | — |
| 70+ | ¥19,050,000 | — |
Source: Survey on Household Financial Behavior (Central Council for Financial Services Information, Japan). Values shown in JPY.
Set a Net Worth Goal
What Is Net Worth and Why Does It Matter?
Net worth is the value of everything you own minus everything you owe.
Net Worth = Total Assets − Total Liabilities
Income and salary measure flow (what comes in each period), while net worth measures stock (what you have accumulated). Knowing your net worth helps you understand:
- Financial resilience — A higher net worth means greater ability to weather income disruptions
- Retirement readiness — How much wealth you have beyond future pension payments
- Borrowing capacity — Lenders assess net worth when approving mortgages and business loans
- Progress tracking — Measuring annually shows whether your wealth-building is on track
If your debt ratio (total liabilities ÷ total assets) exceeds 50%, consider prioritizing repayment of high-interest debt.
5 Ways to Grow Your Net Worth
1. Increase income
Side work, skill development, job changes, or negotiating a raise are the most direct levers. Channel extra income straight into assets.
2. Reduce expenses
Auditing fixed costs (rent, phone, insurance, subscriptions) can free tens of thousands of yen per year — often faster than a pay raise.
3. Pay off high-interest debt first
Credit card revolving debt (15–18% p.a.) erodes wealth faster than almost any investment can grow it. Eliminate these balances before investing aggressively.
4. Start investing
Cash alone loses purchasing power to inflation. Use NISA or iDeCo to invest in index funds for long-term, diversified, low-cost growth. Even 3–5% annual returns compound dramatically over decades.
5. Refinance or renegotiate fixed costs
Refinancing a mortgage, switching to a budget phone plan, or canceling unused insurance can permanently reduce monthly outflows.
Related Tools
- Savings Goal Calculator — Calculate how long to reach any savings target
- iDeCo Simulator — Model iDeCo tax savings and projected payout
- Dividend Growth Simulator — Project dividend income from your investment portfolio