Base Estate Value Calculator for Forced Heirship | Factor In Lifetime Gifts for an Accurate Figure
Enter the estate value at death, a list of lifetime gifts (amount, timing, and recipient), and the debts, and this free simulator automatically calculates the base estate value for forced heirship under Article 1044 of Japan's Civil Code.
The starting point for a forced heirship claim is the "base estate value used to calculate the reserved portion," which isn't simply the estate at the time of death. Under Article 1044 of Japan's Civil Code, you need to add back certain lifetime gifts within a defined range and subtract debts. Just enter the estate value at death, a list of lifetime gifts, and the debts, and this tool automatically judges whether each gift should be added back and estimates the base estate value. The result can be used directly as an input for the forced heirship claim simulator.
Simulate from the estate at death, lifetime gifts, and debts
Tips
- Lifetime gifts to statutory heirs aren't limited to those that qualify as a special benefit — in principle, all of them count toward the base estate (a broader scope than for gifts to third parties).
- For "years elapsed since the inheritance began," enter the number of years from the date the gift was made to the date the inheritance began. It's fine to round down any leftover months to an approximate whole number of years.
- Debts should include not just loans but also monetary obligations that were already fixed at the time the inheritance began, such as unpaid medical bills, taxes, and part of the funeral costs.
- If there are multiple lifetime gifts, use "+ Add a lifetime gift" to add more entry rows, and select individually for each gift whether the recipient was a statutory heir or a third party.
Frequently Asked Questions
Side Note — The history behind how the counting rules for forced heirship came to be consolidated in "Article 1044"
Before Japan's Civil Code reform took effect in July 2019, case law (a Supreme Court decision of March 24, 1998) had taken the position that, regarding the range of lifetime gifts counted toward the base estate for forced heirship, gifts to statutory heirs should count with no time limit unless special circumstances existed. This meant that, compared with gifts to third parties, which were generally limited to within one year, gifts among heirs could reach back an extremely long time.
Allowing even very old gifts to be counted without limit undermined legal certainty for the heirs who had received them, creating a risk that disputes over gifts made decades earlier would be reopened. So the 2019 reform set a concrete cap of, in principle, 10 years for gifts to statutory heirs as well, making the rule more predictable.
On the other hand, gifts that "both parties knew would infringe the reserved portion" still carry no time limit even after the reform. This is because protecting deliberate gifts designed to circumvent the forced heirship system would undermine the effectiveness of the system itself. Today's Article 1044 rests on the balance between the clear 10-year and 1-year limits and this exceptional, unlimited counting rule.