Life Insurance and Inheritance Tax: Two Functions — the "Exemption" and "Liquidity for Tax"

"Most of the estate is real estate, and there's no cash to pay the inheritance tax." We hear this concern repeatedly from wealthy residents in Japan. Inheritance tax must, in principle, be paid in cash and in a single lump sum. When assets are concentrated in real estate, heirs are forced to choose between selling property in a hurry — often at a discount — and borrowing to pay the tax. Life insurance serves two distinct functions in response to this problem.

Three Functions of Life Insurance

The First Function — the Exemption

Life insurance proceeds received by heirs carry an exemption of "¥5 million × the number of statutory heirs" under Article 12, Paragraph 1, Item 6 of the Inheritance Tax Act. With three statutory heirs, up to ¥15 million is excluded from the taxable estate. The same ¥15 million left as a bank deposit would be fully taxable; left as insurance proceeds, the exemption amount falls outside the tax base.

A comparable exemption applies to retirement allowances under Article 12, Paragraph 1, Item 7 of the same Act (likewise ¥5 million × the number of statutory heirs).

The Second Function — Securing Liquidity for Tax

The inheritance tax return must be filed and the tax paid within ten months from the day after the heir becomes aware that the inheritance has commenced (Inheritance Tax Act, Art. 27). This deadline does not change even if most of the estate is hard-to-liquidate real estate.

Insurance proceeds are cash and are paid relatively quickly as property belonging to the named recipient. Article 3, Paragraph 1, Item 1 of the Inheritance Tax Act "deems" life insurance proceeds received on the deceased's death to have been acquired by inheritance — so they are taxable — but their cash nature is precisely what makes them work as liquidity for the tax. The higher the proportion of real estate in an estate, the more practical meaning insurance-funded liquidity carries.

The Third Function — Corporate Insurance

Under a policy where the company is the holder and recipient and the executive is the insured, the company receives the proceeds on the executive's death and can use them as the source of a death retirement benefit paid to the family. That benefit also enjoys the exemption noted above (Inheritance Tax Act, Art. 12(1)(vii)). Note that the treatment of premiums as a deductible expense for the company is governed in detail by National Tax Agency circulars, varying with the type of policy and its surrender ratio, so the actual treatment must be confirmed against the specific contract.

Points to Watch in Design

Naming the recipient. Proceeds are paid as the recipient's own property, without passing through estate division. Whoever is named is who receives — but in relation to other heirs, the statutory reserved portion may need to be considered.

The premium-gift structure. Where the parent pays the premiums and the child receives the proceeds, the proceeds are brought into inheritance tax as "deemed inherited property." Inheritance tax is progressive, with a top rate reaching 55%.

By contrast, there is a structure in which both the policyholder and the recipient are the child. The parent transfers funds to the child within the annual gift-tax basic deduction (¥1.1 million per year), and the child uses those funds to take out a policy as holder and recipient, with the parent as the insured. Here, even though the proceeds are paid on the parent's death, they are not deemed inherited property; they are taxed as the child's "temporary income."

Temporary income is calculated by deducting the expenses incurred and a special deduction of ¥500,000 from gross receipts (Income Tax Act, Art. 34); only one-half of the resulting amount is then included in aggregate income (Income Tax Act, Art. 22(2)(ii)). If, for example, total premiums paid were ¥22 million and the proceeds ¥50 million, the taxable amount would be (¥50M − ¥22M − ¥0.5M) ÷ 2 = ¥13.75 million. Compared with the same ¥50 million taxed in full as inherited property, the structure of taxation differs markedly.

Whether this structure works as intended, however, depends on individual circumstances — the substance of the gifts, who actually bore the premiums, and the combination of holder, recipient, and insured. Merely arranging the form may not produce the intended treatment, so the design calls for careful study.

Treat It as a Structure

Life insurance is one of the few instruments that plays two distinct roles in inheritance planning at once: the exemption and the liquidity to pay tax. The older one is, the higher the premiums; pre-existing conditions can make coverage hard to obtain. That is precisely why the starting point is to map the proportion of real estate in the estate, the number of statutory heirs, and the anticipated inheritance tax onto a single diagram — and then decide where insurance fits.

This article provides general information on tax systems and does not constitute individual tax consultation. Specific filings and tax computations are handled by licensed partner tax accountants whom we introduce.