Data in.
Confidence out.

Retirement spending isn't a number. It's a Range.

A new way to understand retirement: tax‑aware, crash‑aware, and grounded in your actual financial architecture.

The Estate

Pre-Tax

$1.4M

Roth

$350k

Taxable

$600k

Property

$800k

Cash

$50k

The Estate

$3.2M

The Range

The Paradigm Shift

Not a calculator. Not a simulator. But a decision system.

DATUM Intelligence™

DATUM Interpretation

Your spending target is measured against the Range. Not a recommendation. Not a judgment. A clear picture of mathematical reality.

Model Alignment

We run four probabilistic models plus a dedicated stress battery. When they agree, your Range tightens. When they diverge, we show you why.

Fragility Insights

Your plan reacts to change. We show you how. Retire two years earlier. Increase spending. See exactly how your Range shifts under the shocks that matter most.

The Invisible Architecture

What makes this different isn't what you see. It's what you don't have to.

Tax Engine

41-Year Sequencing

We model exact withdrawal order and bracket fills across all 41 years in every simulation.

Dynamic Behavior

Spending Guardrails

The engine automatically cuts spending during crashes and raises it during booms to protect the portfolio.

Portfolio Math

Allocation Glide-Path

We recompute volatility automatically as you de-risk from equities over time.

Cost Drag

Fee-Aware Returns

Every basis point has a name. We compute the exact drag of your holdings.

Cashflow Timeline

Income Layering

Income has seasons. We map every one: from bridge-years, to your pension's real decay.

Valuation Intelligence

CAPE-Dynamic Weights

When markets are expensive, we automatically shift trust toward conservative models.

Four Probabilistic Models.
One Stress Battery.

No consumer retirement tool runs 10,000 futures per profile across four simulation methods plus a dedicated stress battery. Running them together produces an output fundamentally more credible than any single model.

Parametric Monte Carlo

Generates 10,000 return sequences from a log-normal distribution calibrated to your asset allocation.

Historical Bootstrapping

Randomly draws actual annual return sequences from 1926–2025. Preserves extreme outcomes.

CAPE-Adjusted

Uses the current Shiller CAPE ratio to dynamically shift expected returns.

Regime Block Bootstrap

Samples multi-year blocks from historical economic regimes similar to current conditions.

Adverse Scenario Stress Battery

What happens when history rhymes worse? We explicitly test your plan against the 1929 crash, 1970s stagflation, and the Japanese lost-decade to establish your absolute Survival Floor.

Historically Resilient

We show you the exact spending level — tax-aware, in today's dollars — that remains viable across all 10,000 modeled scenarios and historical stress tests.

Every structure begins with a fixed point. A DATUM.

Let's find yours in the studio.

Architect Profile

Date of Birth

Co-Architect Add

Target Retirement Date

Your data generates your Range — nothing else. Precision in, precision out.

Your numbers stay in your browser. We don't store, sell, or share your financial data — ever.

Location

Social Security Strategy

Est. Annual SS at 67 — Primary (optional)

The Estate ↕

Current Value

Pre-Tax 401(k)

Taxed as ordinary income. First in line for RMDs.

Pre-Tax 457(b)

Accessible penalty-free before 59.5 upon separation.

Pre-Tax IRA

Consolidated pre-tax capital.

Roth 401(k)

Tax-free growth from employer plan.

Roth 457(b)

Tax-free growth, accessible early.

Roth IRA

Aspirational, completely tax-free expansion space.

Taxable Brokerage

Capital gains and dividends. Highly liquid.

High Yield Savings

Cash buffer. No market risk.

Pension (Annual Income)

Secure, fixed income floor.

Your DATUM (Target Spend)

Your preferred annual living space inside the Range.

Market Outlook

We don't ask you to predict the future. We ask you how much you trust each version of the past. Choose your philosophical approach to our models.

History Repeats 📚

Equal trust in all models. The full historical record speaks equally.

Valuations Matter DEFAULT

Current high CAPE predicts lower returns. Trusts valuation-aware models more.

Cautious 🛡️

Structurally pessimistic. Overweights the regime model mapping expensive markets.

Optimistic 🚀

Trusts the full historical record more — markets have always eventually recovered.

Custom ⚙️

Manually define your exact confidence weighting across all 4 probabilistic models.

Phase I / Multiverse Variance

Modeling a ten-thousand path multiverse.

Singularity established.

Your estate has been measured.

These are your boundaries.

Target Spend

$120,000 / yr

Structural Ceiling

$4.12M

$165,000 / yr

The mathematical limit of your plan's capacity. A structural constraint, not an aspirational target.

Survival Floor FIXED

$2.60M

$122,000 / yr

Floor holds in 99% of simulations + all stress scenarios. Survives the 1929 crash. Survives everything.

Your DATUM

$3.00M

Target Portfolio Balance

Est. Legacy: —

$ / yr

Est. Legacy: $3.00M

Your plan is highly secure.

You are maximizing plan durability and legacy.

KEY SENSITIVITY Inflation → 4% (Impact: −$29K to Capacity)

Not a guess. A range — built from four probabilistic models, a dedicated stress battery, and your actual financial life.[+] Show Math

Recalculating...

Applying your updated inputs

Data in.
Confidence out.

The Philosophy

1. Every structure begins with a fixed point.

In architecture, surveying, and engineering, nothing meaningful can be built until you establish a DATUM — a reference point that does not move.

It is the anchor.
The origin.
The truth everything else is measured from.

Your financial life has never had one.
Retirement tools give you guesses, probabilities, and sliders — but never a fixed point.

DATUMFI changes that.

2. Your life deserves a reference, not a recommendation.

Most tools tell you what you "should" spend.
They collapse uncertainty into a single number.
They hide risk behind a percentage.
They turn your future into a score.

We reject that.

You bring your number — your DATUM.
Not a target.
Not a prescription.
A reference.

A fixed point that reflects your intent, not our opinion.

3. Complexity belongs in the engine, not on your shoulders.

Your financial life is complicated:

accounts
taxes
timelines
market cycles
sequence risk
inflation
longevity
valuation extremes

You shouldn't have to manage that complexity.
You shouldn't have to guess.
You shouldn't have to "play with sliders" until the answer feels right.

That's why we built the Studio — the architectural drafting room for your retirement.

You map your reality.
We handle the structure.

4. We don't guess. We measure.

Once your Estate is drafted in the Studio, we run it through:

10,000 market futures
four independent simulation methods
every major crash since 1926
valuation-aware scenarios
stress tests
dynamic spending behavior

We don't hide uncertainty.
We reveal it.

Not as a probability.
Not as a score.
As a Range.

5. Retirement spending isn't a number. It's a Range.

Your Range is the truth of your plan:

Structural Ceiling What the data says your plan's ultimate capacity can reach.
Your DATUM Your number, your plan. Measured against mathematical reality.
Survival Floor Even if history's worst repeats. Holds in 99% of simulations.

This is not a recommendation.
This is not a guess.
This is the world your plan lives inside.

6. Intelligence is clarity, not complexity.

We built DATUM Intelligence™ to interpret your Range with honesty and restraint.

DATUM Interpretation
What your DATUM means inside the Range — without judgment, without prescription.

Convergence
How closely independent models agree — a quiet signal of structural robustness.

Fragility Insights
How your Range shifts when the assumptions that matter most change.

This is intelligence that clarifies, not overwhelms.
Insight without noise.
Rigor without anxiety.

7. Confidence is not a feeling. It's a structure.

Confidence doesn't come from optimism.
It doesn't come from a single number.
It doesn't come from a probability score.

Confidence comes from understanding:

your floor
your possibilities
your intent
your sensitivity
your structure

Confidence comes from seeing your financial life the way an architect sees a building — anchored, measured, load‑tested, and honest.

Confidence comes from a fixed point.
Confidence comes from your DATUM.

8. This is not a calculator. This is a way of thinking.

DATUMFI is not here to tell you what to do.
It's here to show you the world around your choices.

It's not here to simplify your life into a single number.
It's here to reveal the structure beneath it.

It's not here to guess.
It's here to measure.

It's not here to predict the future.
It's here to prepare you for it.

9. Data in. Confidence out.

This is the promise.
This is the philosophy.
This is the brand.

DATUMFI exists to give people something they've never had:

A fixed point.
A clear structure.
A measured range.
A calm understanding of uncertainty.
A way to live with confidence.

Not a guess.
Not a score.
A reference.

A DATUM.

Data in.Confidence out.

DATUM Intelligence™

Four Probabilistic Models.One Stress Battery.

Every structure begins with a fixed point. A DATUM.

Data in.Confidence out.

Data in.
Confidence out.

Four Probabilistic Models.
One Stress Battery.

Data in.
Confidence out.