JPFIRECalc

JPFIRECalc · Japan Gateway tool

Financial independence planning built for Japan.

Model taxes, residence tax, NHI, pensions, 新NISA, iDeCo, household commitments and foreign assets in one Japan-specific scenario.

Why a single retirement number can mislead

Retirement timing is not one number.

Your accessible bridge, later pension income, account restrictions, local costs, taxes, insurance and currency assumptions can all arrive on different clocks. JPFIRECalc makes those assumptions visible so you can compare scenarios instead of hiding them in a single rule of thumb.

Model the system

Japan-specific inputs

  • NTA tax and residence-tax assumptions
  • NHI and social-insurance estimates
  • Public pension timing and estimates
  • 新NISA and iDeCo access boundaries
Stress-test the plan

Make uncertainty legible

  • Regional spending assumptions
  • Foreign assets and currencies
  • Returns, inflation and volatility
  • Household and education commitments
Three steps

Use the tool to explore your assumptions.

01Gather records

Separate accessible savings, NISA, iDeCo, cash, foreign assets, spending and pension information.

02Create a base case

Choose a region, enter the household budget and record which figures are assumptions rather than facts.

03Compare one change at a time

Run downside returns, higher inflation, different spending and later pension scenarios without overwriting the base case.

Launch the application

Build a scenario, then inspect what makes it work.

The calculator is hosted as a standalone application. The embedded view below preserves the full working surface; open it in a new window if you prefer.

General planning tool, not financial advice. It cannot determine tax residence, visa eligibility, pension entitlement or the correct treatment of your personal facts.

Disclosure · FIRE in Japan guide · General information, not financial advice.

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