Why We Built PlanTogetherFI

Most financial independence calculators assume life is simple.

One person. One income. One currency. One country. One retirement plan.

That is not how our life works.

My wife and I live in Tokyo, Japan. Like many international households, our financial life does not fit neatly into one box. We earn and spend in yen. We think about NISA. We also think about family responsibilities, overseas assets, currency movement, future children, possible relocation, and the question that quietly sits behind every money decision:

"What kind of life are we actually building together?"

That question is the real reason we built PlanTogetherFI.

At first, I thought we only needed a FIRE calculator. Something that could tell us how much money we needed before reaching financial independence. But the more I looked at existing tools, the more I realized the problem was not just the math. The problem was context.

A standard FIRE calculator can tell you when your investments might reach a target number. Useful, yes. But for couples and foreigners in Japan, that is only part of the story.

What happens if one partner wants to stop working earlier? What happens if one income is in yen but some assets are overseas? What happens if you send money home every month? What happens if your retirement life may not be fully in Japan? What happens if your partner sees money as security, while you see money as freedom?

That is where most tools become too generic.

PlanTogetherFI was built because we needed a planning tool that reflects the messiness of real life. Not just clean spreadsheet math. Real household decisions.

For us, financial independence is not only about retiring early. It is about having more control. More options. More breathing room. More ability to support family without destroying our own future. More ability to make life decisions together instead of reacting to money stress.

That is why the name matters.

Plan means we are not guessing. Together means this is not a solo journey. FI means financial independence, not just early retirement.

We are building PlanTogetherFI for foreigners and international couples in Japan who are trying to answer practical but difficult questions:

Can we invest while supporting family overseas? Should we prioritize NISA, cash savings, or remittances? How does currency affect our plan? Can one partner slow down before the other? Are we really aligned, or are we just avoiding the conversation?

These are not abstract questions. These are dinner-table questions. Train-ride-home questions. Sunday-morning-budget questions.

PlanTogetherFI is still growing. The first version focuses on helping people model their financial independence path. But the bigger vision is more specific: to help cross-border households in Japan plan with clarity across income, savings, investing, remittances, currencies, and future life choices.

We do not want to build another generic calculator. The internet already has enough of those.

We want to build a tool that understands that many people in Japan are not planning a perfectly local life. Their money crosses borders. Their responsibilities cross borders. Their identity crosses borders. Their future may cross borders too.

A big technology company example would be Apple. Apple does not win because it creates the most feature-heavy products. It wins because it makes complicated things feel usable and personal. That is the standard we want for PlanTogetherFI. Not more complexity for the sake of complexity. Clearer decisions.

The truth is, money planning can feel intimidating. Especially when you are an immigrant, part of an international couple, or building a life between countries. But avoiding the conversation is more expensive than facing it.

PlanTogetherFI exists because we needed this tool ourselves.

And if our life is this complicated, we know we are not the only ones.