Die With Zero Calculator
Most retirement calculators try to make sure you never run out of money. That sounds responsible — until you realize it often means dying with hundreds of thousands of dollars you never got to use.
The Die With Zero approach, popularized by Bill Perkins, starts from a different question: what if the goal isn't to preserve your wealth forever, but to use it all — deliberately and well?
Retiro is one of the only retirement planning tools that fully implements the Die With Zero method alongside Traditional FIRE and the 4% Rule, so you can compare them using the same assumptions.
Try the Die With Zero Calculator →
What "Die With Zero" Actually Means for Your Plan
Die With Zero doesn't mean being reckless. It means planning to spend your money over a finite lifetime instead of planning to never run out.
In practice, this changes your retirement number significantly. A Traditional FIRE plan might tell you that you need $1.8M to retire. A Die With Zero plan — using the exact same spending, return, and inflation assumptions — might tell you that you need $1.2M.
That difference isn't a math error. It's a philosophical choice: are you optimizing for safety or for life?
Retiro makes this tradeoff visible. You enter your assumptions once, and the engine calculates your required portfolio under each method. You can see exactly how much extra capital the "never run out" guarantee costs you.
What Makes Retiro Different from Other DWZ Calculators
Most Die With Zero calculators are simple drawdown projections: enter a lump sum, a withdrawal rate, and watch it go to zero. They don't account for how people actually live.
Retiro's Die With Zero method includes:
Spending Phases
You don't spend the same amount every year for 40 years. Retiro lets you define multiple spending periods across your life — higher spending in your active early retirement years, lower spending later, adjustments for health or family changes. All entered in today's dollars.
Pensions and Government Benefits
If you have a pension, CPP/OAS, Social Security, or any guaranteed income stream, Retiro offsets it against your portfolio withdrawals automatically. This can dramatically reduce your required portfolio.
Windfalls
Expecting an inheritance, a property sale, or another future lump sum? Retiro integrates these into your plan so you're not over-saving to compensate for money that's already coming.
Legacy Goals
Die With Zero doesn't have to mean leaving nothing. If you want to leave a specific amount to your heirs, Retiro factors that into the calculation — you'll see exactly how much extra you need to save to fund both your life and your legacy.
Optimized Spending
Retiro can also work backwards: given your current assets and assumptions, what's the maximum you can spend each year and still hit zero at your target age? This is the question most DWZ readers actually want answered.
See the Real Cost of "Never Running Out"
The most powerful thing Retiro does is let you compare methods side by side.
When you see that Traditional FIRE requires $1.8M and Die With Zero requires $1.2M for the same lifestyle, you're seeing the price of perpetual safety in real terms — $600K of extra savings, which translates to years of additional work.
That doesn't mean one method is right and the other is wrong. It means the decision should be intentional, not accidental. Most people default to the conservative approach without ever seeing the alternative.
Compare Your FIRE Number Across Methods →
Who This Is For
Retiro's Die With Zero calculator is built for people who have read the book and want to actually run the numbers — not with a napkin formula, but with a proper engine that handles real-world complexity.
It's also for anyone in the FIRE community who suspects they might be over-saving and wants to see what a more intentional drawdown plan looks like.
You don't need to commit to one philosophy. Retiro lets you see all of them, with the same inputs, so you can decide what feels right.