Rich Dad Poor Dad and its sequel Cashflow Quadrant popularised the idea that employees earn, are taxed, then spend what is left, while business owners earn, spend, and are taxed on the remainder. How far does that hold in Japan? We calculated what happens to the same ¥6 million of value created under three arrangements — employee, sole proprietor and one-person company — using actual 2026 Japanese tax and social insurance rates. Two findings stand out: what really separates them is social insurance, not income tax, and the person with the lowest burden rate ends up with the least cash in hand.
First, a caveat: the 45.7% national burden ratio is not your burden ratio
On 5 March 2026 Japan's Ministry of Finance put the FY2026 national burden ratio at 45.7% (28.0% taxes plus 17.6% social security contributions); adding the fiscal deficit gives a potential ratio of 48.4%.
The national burden ratio measures total taxes and social insurance contributions paid by everyone, against national income. The numerator includes corporate tax, inheritance tax, property tax and consumption tax — none of which appear on your payslip — and the denominator is national income, not GDP. It is computed on an entirely different basis from an individual's burden. See the international comparison of national burden ratios.
Putting the three on the same footing
Everyone starts from ¥6 million of value created in one year: for the employee that is the company's payroll budget, for the sole proprietor it is revenue minus expenses, for the company it is gross profit before director's remuneration.
Conditions: Tokyo's 23 wards; under 40 (no long-term care premium); single with no dependants; Kyokai Kenpo health insurance; sole proprietor with the ¥650,000 blue return deduction and Category 1 business tax; company with capital under ¥10 million and no employees; 2026 rates including the special reconstruction income tax. No furusato nozei or insurance premium deductions.
The results
| Item | Employee | Sole proprietor | Company A max remuneration | Company B ¥1.8m remuneration |
|---|---|---|---|---|
| Value created | ¥6.00m | ¥6.00m | ¥6.00m | ¥6.00m |
| Received as | ¥5.203m gross | ¥6.00m business income | ¥5.181m remuneration | ¥1.80m remuneration |
| Social insurance (employee side) | ¥760k | ¥803k pension 215k + NHI 588k | ¥731k | ¥254k |
| Social insurance (employer side) | ¥797k | — | ¥749k | ¥260k |
| Income tax | ¥98k | ¥324k | ¥99k | ¥0 |
| Resident tax | ¥258k | ¥401k | ¥259k | ¥43k |
| Enterprise tax | — | ¥155k | — | — |
| Corporate taxes | — | — | ¥70k per-capita levy only | ¥937k |
| Total burden | ¥1.913m | ¥1.683m | ¥1.908m | ¥1.494m |
| As % of ¥6m | 31.9% | 28.0% | 31.8% | 24.9% |
| Cash in the individual's hands | ¥4.087m | ¥4.317m | ¥4.092m | ¥1.503m |
| Left inside the company (after tax) | — | — | ¥0 | ¥3.003m |
Company A's burden of ¥1.908m is essentially identical to the employee's ¥1.913m. As long as the profit is paid out as director's remuneration, incorporating buys almost nothing on tax, because directors are taxed exactly like employees. On top of that come the ¥70,000 per-capita corporate resident levy that applies even in a loss year, and the cost of a corporate filing. "Incorporate and pay less tax" only works together with a design that keeps money inside the company.
The lowest burden rate leaves the least cash
- Company B (¥1.8m remuneration): lowest burden at 24.9% — but the individual keeps only ¥1.503m
- Sole proprietor: 28.0% burden — highest personal take-home at ¥4.317m
- Employee: 31.9% burden, ¥4.087m take-home
The ¥3.003m left in Company B belongs to the company, not to you. Getting it out means raising next year's remuneration, paying a dividend, or taking it as a retirement allowance — each taxed again at that point. Director's remuneration must generally be fixed within three months of the start of the fiscal year and cannot be changed mid-year, so "I need more this month" is not an option. Kiyosaki's B-quadrant tax logic works only for people who can leave the money in the company. See micro-corporations and social insurance.
Scoring the four quadrants against Japanese rules
Employee
Withholding really does come first. But Japan grants an employment income deduction — ¥1.48m on gross pay of ¥5.2m — automatically, with no receipts. The actual-expense alternative only covers spending above half the standard deduction, so almost nobody uses it.
Sole proprietor
Deducting real expenses first is genuine, and this arrangement produced the highest take-home here. But the pension and health cover are the National Pension and National Health Insurance: no employer half, and much thinner benefits. Enterprise tax applies on top.
Business owner
You can use the employment income deduction on your remuneration and leave the rest in the company. That two-step is real — but the part paid out is treated exactly like an employee's, and the part left behind is not yours to spend.
Investor
Listed share dividends and capital gains are taxed separately at 20.315%. This is Japan's largest asymmetry, for a reason Kiyosaki never mentions — see below.
| The book's claim | Verdict in Japan | Why |
|---|---|---|
| Employees earn-tax-spend; owners earn-spend-tax | broadly right | Withholding and actual-expense deduction really do differ |
| So employees cannot deduct anything | wrong | The employment income deduction is ¥1.48m on ¥5.2m of pay — hard to beat with real receipts |
| Incorporating cuts your tax sharply | conditional | ¥1.913m vs ¥1.908m if all profit becomes remuneration. Only a low-remuneration design lowers it |
| The tax code favours the right-hand quadrants | half right | Income tax brackets are identical. The difference comes from social insurance and separate taxation of investment income |
What actually separates them is social insurance
Take income tax plus resident tax alone: ¥356k for the employee, ¥725k for the sole proprietor, ¥358k for Company A. On tax alone the sole proprietor pays the most, because the ¥1.48m employment income deduction dwarfs the ¥650k blue return deduction.
Now social insurance, including the employer side: ¥1.557m for the employee, ¥803k for the sole proprietor, ¥514k for Company B. The sole proprietor gives up ¥369k on tax and wins back ¥754k on social insurance. That reversal is the whole story.
| Status | Pension | Health | How it scales |
|---|---|---|---|
| Employee / company director | Employees' Pension 18.3% (half each, 9.15% from you) | Kyokai Kenpo national average 9.90% (half each) | Proportional to pay, capped at ¥650,000 standard monthly remuneration |
| Sole proprietor | National Pension ¥17,920 a month, flat | National Health Insurance (Tokyo 23 wards: 7.51% medical + 2.80% support) | Pension is flat regardless of income; NHI caps at ¥1.1m a year |
At ¥6m of income the National Pension works out to an effective 3.6%, against 18.3% for the Employees' Pension. That single line explains most of the gap.
Wages and business income both attract social insurance contributions. But gains and dividends on listed shares held in a withholding-type specified account, left off your tax return, are excluded from the National Health Insurance calculation. The same ¥1m earned through business raises your premium; earned through shares, it does not. Note two caveats: filing a return to use aggregate taxation or loss carry-forward puts that income back into the premium base, and including financial income in premium calculations remains under active policy discussion.
A lighter burden is not the same as a better deal
| Benefit | Employee / director | Sole proprietor |
|---|---|---|
| Old-age pension | Basic plus earnings-related. On the ministry's model case the earnings-related top-up alone is about ¥96,000 a month | Basic only — ¥70,608 a month at the full rate (2026) |
| Sickness leave | Injury and sickness allowance, two-thirds of pay for up to 18 months | None |
| Maternity leave | Maternity allowance | None |
| Work injury | Workers' compensation, premium paid entirely by the employer | None by default (voluntary special enrolment) |
| Unemployment | Employment insurance basic allowance | None |
| Survivor benefits | Basic plus earnings-related survivor pension | Basic survivor pension only |
The annual burden gap between employee and sole proprietor here is ¥230,000. Over 38 working years that is about ¥8.7 million.
The earnings-related pension top-up is about ¥96,000 a month on the model case. Received for 25 years from age 65, that is roughly ¥28.8 million — more than three times the burden gap. Outcomes vary with pay level and longevity, but "cheaper premiums are better" clearly does not follow.
Sole proprietors can close part of that gap with iDeCo (up to ¥68,000 a month for the self-employed), the National Pension Fund, the Small Enterprise Mutual Aid scheme, or the additional pension premium — all deductible. But these are opt-in: nothing happens unless you act.
What the lifetime totals look like
JILPT's Useful Labour Statistics 2025 puts lifetime earnings for a university graduate working to 60 at ¥340 million for men and ¥270 million for women, excluding retirement allowances. Applying this article's roughly 32% burden rate gives around ¥110 million in tax and social insurance, of which perhaps ¥70–80 million actually leaves the payslip. Adding consumption tax on what is spent brings the total to roughly ¥120–130 million. These are order-of-magnitude figures only.
| Status | 38-year total burden | vs employee |
|---|---|---|
| Employee | about ¥73m | — |
| Sole proprietor | about ¥64m | ¥8.7m less |
| Company A (max remuneration) | about ¥73m | roughly the same |
| Company B (¥1.8m remuneration) | about ¥57m | ¥16m less |
But as shown above, the sole proprietor's ¥8.7m is offset by the pension gap, and Company B's ¥16m depends entirely on how the money accumulated inside the company is eventually taken out. Neither difference can be read as money saved.
The costs of changing quadrant
| Cost | Rough scale | Notes |
|---|---|---|
| Incorporation | from about ¥60,000 (GK) or ¥200,000 (KK) | Registration tax and articles of incorporation (details) |
| Per-capita corporate resident levy | ¥70,000 a year | Capital under ¥10m, 50 or fewer staff. Payable even in a loss year |
| Mandatory social insurance | about 28.6% of remuneration (both sides) | Required even with a single director |
| Accountant's fees | roughly ¥200,000–500,000 a year | Corporate filings are more involved than a personal return |
| Rigid director's remuneration | — | Fixed within three months of the year's start; no mid-year change |
Limited liability, a fiscal year of your choosing, ten-year loss carry-forward, meeting counterparties' credit and contracting requirements, and easier succession. Judging on tax and social insurance alone tends to lead people astray. See when to incorporate.
FAQ
Q. So which is best — employee, sole proprietor or company?
A. It depends on what "best" means. The lowest burden rate on ¥6 million of value is the low-remuneration company at 24.9%, but that individual keeps only ¥1.503m. The highest personal take-home is the sole proprietor at ¥4.317m, but with a much thinner pension and no sickness, work-injury or unemployment cover. The employee pays the most but is best protected and has almost no paperwork.
Q. Does incorporating really cut your tax?
A. Not if the profit is paid out as director's remuneration. In this calculation the employee's burden was ¥1.913m and the one-person company paying maximum remuneration was ¥1.908m, because directors are taxed as employees. The burden falls only when remuneration is held down and profit stays in the company — and then that money is not freely available to you. Add ¥70,000 a year of per-capita levy even in a loss year, plus accountant's fees.
Q. Should I count the employer's social insurance contribution as my own burden?
A. Legally the employer pays it and it never appears on your payslip. But employers hire on total labour cost, and economists generally hold that part of it is passed to workers through lower wages. This article shows both sides separately so you can take either view. When comparing job offers or a move to self-employment, total labour cost is the more reliable yardstick.
Q. If sole proprietors pay less in social insurance, why doesn't everyone do it?
A. Because the lower premium is the flip side of thinner benefits. The National Pension pays at most ¥70,608 a month (2026) with no earnings-related top-up, and there is no sickness allowance, maternity allowance, unemployment benefit or workers' compensation. On the ministry's model case the earnings-related top-up alone is about ¥96,000 a month, or roughly ¥28.8 million over 25 years.
Q. Does the employment income deduction mean employees do get expenses?
A. Yes. On gross pay of ¥5.2 million the deduction is ¥1.48 million, granted automatically without receipts. The actual-expense route exists but only covers spending above half the standard deduction — here, above ¥740,000 of your own money. "Employees cannot deduct expenses" is not accurate under Japanese rules.
Sources
This article is general information and does not recommend any particular working arrangement, corporate form, book or product. The book is cited to test its claims against Japanese rules, not to endorse or dispute them.