Lifetime Gift Planner | Simulate Annual Gifting vs. Inheritance Tax (Japan)
Enter your total estate value, heir composition, and a planned annual gift amount to compare the combined gift tax and inheritance tax burden of Japan's annual gift exemption (暦年贈与) against doing no lifetime gifting at all. See the estimated tax savings instantly.
Under Japan's annual gift tax system (暦年贈与), the total value of gifts received in a calendar year (Jan 1 – Dec 31), minus the basic exemption of 1.1 million yen, forms the "taxable amount" to which the rate table below applies to compute gift tax. Transferring assets gradually every year while alive can shrink the taxable estate at the time of inheritance and reduce the total inheritance tax owed.
Gift Tax Rate Table (special rate — gifts from a lineal ascendant to a child/grandchild aged 18+)
| Taxable amount after basic exemption | Rate | Deduction |
|---|---|---|
| ¥2,000,000 or less | 10% | — |
| ¥4,000,000 or less | 15% | ¥100,000 |
| ¥6,000,000 or less | 20% | ¥300,000 |
| ¥10,000,000 or less | 30% | ¥900,000 |
| ¥15,000,000 or less | 40% | ¥1,900,000 |
| ¥30,000,000 or less | 45% | ¥2,650,000 |
| ¥45,000,000 or less | 50% | ¥4,150,000 |
| Over ¥45,000,000 | 55% | ¥6,400,000 |
Gift tax is calculated by applying this rate table to the taxable amount — the annual gift received minus the 1.1 million yen basic exemption. Because the exemption applies per recipient every year, spreading gifts across more years and more recipients increases the total amount that can be transferred tax-free.
Simulate the Tax Savings From Your Gift Plan
What this lifetime gifting planner does
Enter the total value of the estate, the composition of the statutory heirs and the amount to be given each year, and this tool compares the combined gift and inheritance tax burden under a programme of annual gifts against doing nothing at all. Changing the number of years shows how the effect accumulates.
What is most often overlooked is that gifts made shortly before death are added back into the estate. Gifts made within a set period before the succession opens are brought back into the taxable estate even where they fell within the annual allowance. For gifts made from 1 January 2024 onward, that look-back period is being extended in stages from three years toward seven (with a fixed deduction applying to the extended portion). The practical consequence is that gifting in haste because a succession seems near achieves very little: annual gifting rewards the years you started early. Because the extension is still passing through its transitional rules, confirm the current treatment before filing.
A second point: avoid giving an identical amount at an identical time year after year. If the arrangement can be characterised as a promise from the outset to hand over a lump sum in instalments, the whole amount may be treated as given in the first year. Common practice is to vary the amount and the timing and to keep a signed gift agreement for each occasion. This estimate is a planning aid; the tax position itself belongs with a qualified adviser.
Sources used in this calculation
Statutory figures such as tax and insurance rates come from the public bodies listed below. They change when the law is revised, so please also check the primary source before relying on the result for an important decision.
- Gift tax rate tables and basic deduction (calendar-year taxation) — National Tax Agency (国税庁) Effective from 2015-01 ／ Last checked 2026-09-18
- Japanese inheritance tax rate table and basic exemption amount — National Tax Agency (国税庁) Effective from 2015-01 ／ Last checked 2026-09-17
How to use it
- Enter the total value of the estate Include property, financial assets and insurance proceeds — everything that falls within the taxable estate.
- Choose the composition of the heirs The basic deduction turns on whether there is a surviving spouse and on the number of children, so this moves the result considerably.
- Enter the annual gift and the number of years Moving the years one at a time shows where the benefit begins to level off.
- Compare against making no gifts The difference in total burden is what the plan is expected to be worth.
Tips for getting more out of it
- Gifting exactly up to the 1.1 million yen basic exemption every year incurs zero gift tax, so start by testing a plan that fully uses this tax-free allowance each year.
- The more recipients (children or grandchildren) you have, the more 1.1 million yen exemptions you can use in a single year, which generally lowers the tax burden for the same total amount gifted.
- Gifting a large lump sum in a single year triggers gift tax's steep progressive rates, so check with this tool whether the "tax savings" figure turns negative before actually making the gift.
- The more years you allow until the inheritance, the more of your gifts are made before the add-back period (7 years before the inheritance for inheritances from 2031 onward) and stay out of the taxable estate. Try several values for the number of years to see how the effect changes.
When this is useful
Deciding when to begin
Because of the look-back period, the starting date affects the outcome more than anything else.
Deciding how much to give each year
You can weigh staying within the allowance against paying some gift tax in order to move more.
Planning across several heirs
Who receives what also shifts the balance against their eventual shares of the estate.
Comparing with other regimes
It gives you a starting point for weighing the settlement-at-succession regime or the housing-fund exemptions alongside.
Terms used here
- Annual gifting
- Gifting measured over the calendar year from 1 January to 31 December, with an allowance applying per recipient.
- Add-back of lifetime gifts
- The mechanism that returns gifts made within a set period before death to the taxable estate. That period is being extended from three years toward seven.
- Basic deduction
- The amount subtracted from the taxable estate. It varies with the number of statutory heirs, so family composition moves the result.
- Statutory shares
- The proportions the Civil Code assigns to each heir. A will or an agreed division takes precedence over them.
- Settlement at succession
- An alternative regime available under certain conditions. Once chosen, there is no returning to annual gifting.
- Gift of an annuity
- The characterisation applied when the arrangement looks like a promise to pay fixed sums annually. The whole amount may then be treated as given in the first year.
Frequently Asked Questions
Side Note — Why the Gift Add-Back Period Grew From 3 Years to 7
For gifts made on or after January 1, 2024, the "lifetime gift add-back" rule — which folds gifts received shortly before an inheritance back into the taxable estate — is being extended in stages from 3 years to 7 years (the full 7-year window only applies to inheritances that begin on or after January 1, 2031, under transitional measures). The reform reflects concerns that families were using the gap between gift tax and inheritance tax rates to make last-minute gifts right before death purely to shrink the taxable estate.
With the look-back window now longer, planning gifts early and consistently matters more than ever. A large gift made in a panic shortly before death will simply be added back into the estate if it falls within the look-back period, defeating the intended tax savings. In this tool, the "years until inheritance" input sets when the inheritance begins, and the amount added back is calculated with the look-back period that applies to that date. If shortening the number of years makes the savings shrink sharply, it is because most of the gifts now fall inside the look-back period.
Gifts received in the extended 4-year portion (the 4th to 7th years before the inheritance) benefit from a relief measure: up to 1,000,000 yen in total is not added back to the estate. This tool includes that relief, and it also reflects the "gift tax credit", which subtracts the gift tax paid on added-back gifts from the inheritance tax. However, gift tax exceeding the inheritance tax is not refunded, so a gift far above the basic exemption made shortly before an inheritance can leave the gift tax you paid as a pure cost.