FinP4lPublic Benefit ProjectYour whole financial life in one model. Try any decision before you make it.
Retire early. Take a sabbatical. Downsize. Pay off your mortgage. Change investments. Survive a market crash.
Income, savings, debts, spending, retirement lifestyle, inheritance, your estate, taxes, market cycles and inflation, brought together in one plan you can see year by year. Switch on any of 40+ What-Ifs and watch your retirement age, taxes, cash flow and wealth change.
See the 30-year impact of every decision - across 40+ real-life scenarios
The Challenge
Financial Planning Shouldn't Require
a Finance Degree
Probability Fog
Generic calculators give you "72% chance of success." You need a definitive answer about YOUR life, not a coin flip.
Hidden Agendas
Most "free" tools funnel you toward product recommendations, affiliate links, or advisor upsells. Your plan should serve you, not commissions.
Pieces in Separate Places
One calculator for retirement, another for taxes, a spreadsheet for the budget. None of them see how a decision ripples through the rest.
You deserve clear answers -- not sales pitches.
What You Get
Every Piece of Your Plan, Working Together
Your Complete Financial Timeline with Scenario Planning
See assets, income, and expenses projected year-by-year through retirement - with realistic boom/bust market cycles built into the baseline. Toggle 40+ what-if scenarios, or drag the market bust onto your retirement year to stress-test sequence-of-returns risk.
Optimize Your Savings & Investments
Follow the optimal allocation waterfall: emergency fund, 401(k), HSA, Roth IRA -- ranked by tax efficiency. Adjust with sliders, see the impact instantly.
Track and Model Your Spending
Model expense categories to fit your target lifestyle. Adjust spending across housing, food, travel, and more -- then see how each change shifts your retirement timeline.
Design Your Retirement Lifestyle
Choose your lifestyle, pick a retirement location, add hobbies and big purchases -- see how each choice changes your retirement expenses and timeline.
Manage Your Portfolio Through Multiple Lenses
Analyze allocation by buckets, risk, tax efficiency, and liquidity. Set custom targets, follow the glide path timeline, and get actionable rebalancing recommendations.
Your Estate: Retirement Income and Tax Strategy
Split assets between heirs and charity, generate retirement income from CRTs, and unlock tax deductions with DAFs and gifting strategies -- all with real dollar projections based on your portfolio.
How Do You Stack Up?
Compare your net worth, savings rate, and retirement readiness against your demographic cohort. No judgment -- just context.
Never Miss a Critical Step
Estate planning, beneficiary updates, insurance review -- track every retirement readiness task across Financial, Legal, Healthcare, and Housing categories.
Explore FIRE & Alternative Frameworks
Go beyond traditional retirement. Model Coast FIRE, Lean FIRE, Barista FIRE, and other strategies to find the path that fits your lifestyle and risk tolerance.
How It Works
Three Steps to Financial Clarity
Describe Your Situation
Type naturally: "I make $95k, have $120k saved, want to retire at 55" -- or connect your bank accounts via Plaid.
See The Full Picture
Everything in one timeline: income, savings, debts, spending, taxes, inheritance and your estate, year by year, stress-tested at the risk level you pick.
Test What-If Scenarios
Career change? New baby? Market crash right when you retire? See the 30-year impact of any life decision instantly. Over 40 scenario templates built in.
Explorable paths, not probability scores. FinP4l shows you which years are dangerous and why - instead of compressing your future into a single Monte Carlo success percentage.
Just Describe It
Set Up Your Plan in Plain English
Type it the way you'd tell a friend. The AI builds your plan.
Start a new profile
“We're 42 and 40, make $180k combined, have $350k in 401ks and a $400k mortgage at 3%. We'd like to retire at 58.”
Update what changed
“I got a raise to $135k and paid off my car.”
Try a what-if
“What if I take a year off at 50 to travel?”
Ask a question
“Why are my taxes so high in my 60s?”
What you type is sent to the AI; your plan stays in your browser.
Privacy First
Your Plan Stays in Your Browser
On the FinP4l website: Your plan stays in your browser - no account, nothing to sign up for. Optional AI and bank features send only what they need.
Bank connections via Plaid are read-only. Your bank credentials go to Plaid, never to us.
No account creation required. No email. No password. Just open and use.
Every calculation runs in your browser. Transparent math, no black boxes.
Your Browser
You enter your data
Local Storage
Your plan stays in your browser
Your Eyes Only
No account, no sign-up
Built For You
Whatever Stage You're At
Pursuing FIRE?
Calculate your FI number, model Coast FIRE vs Lean FIRE, optimize Roth conversion ladders, and track geographic arbitrage savings.
Approaching Retirement?
Model Social Security timing, pension integration, Medicare transition costs, required minimum distributions, and annuity strategies.
Planning Life Decisions?
Career changes, starting a family, buying property, starting a business -- see how every decision ripples through your financial future.
A Financial Wellness Initiative
FinP4l is a public benefit project by DI SW Ventures, LLC, supported by its community. We believe financial clarity should be accessible to everyone -- not just those who can afford an advisor.
Just math. Just your numbers. Just answers.
Frequently Asked Questions
What is a financial decision simulator?
It brings your whole financial life into one model, then lets you try a decision on it before you make it. FinP4l puts your income, savings, debts, spending, retirement lifestyle, inheritance, estate, taxes, market cycles and inflation into one plan projected year by year. Pick a decision you are actually weighing - retiring early, taking a sabbatical, downsizing, paying off your mortgage, changing your investment mix - and it re-runs the whole projection with the decision applied, so you can compare before and after on the same chart.
Which financial scenarios can I model?
More than 40, grouped into career and income (job loss, going part-time, a sabbatical, starting a business), family and life (having children, college funding, supporting aging parents, inheritance), property and assets (buying a home, an investment property, downsizing, relocating to a lower cost of living, a renovation, paying off the mortgage early) and market and strategy (a market crash, an inflation surge, long-term care, a Roth conversion ladder, changing your investment allocation, claiming Social Security early).
Can I stack more than one scenario at a time?
Yes. Scenarios are toggles on one shared timeline, so you can run a sabbatical in year 3, a downsize in year 8 and a market crash in year 12 together and see the combined result. Toggle any single scenario off to isolate what it was contributing.
Does it show the tax impact of a decision?
Yes. The projection computes tax year by year - ordinary income, long-term capital gains stacked on the real 0/15/20 bands, tax-deferred contributions, Roth conversions and the taxable portion of Social Security. A decision that looks good before tax will still show its real after-tax cost.
How is this different from a retirement calculator?
A retirement calculator looks at one piece from one set of inputs and answers one question: will I have enough. FinP4l keeps every piece in one model, so a decision shows its effect on your taxes, spending, savings and estate together. It starts from a decision you are considering and shows what changes because of it - how many years earlier or later you reach financial independence, what happens to cash flow in the years around the decision, and what it costs in tax.
Why scenario modeling instead of Monte Carlo simulations?
Monte Carlo gives you a range of odds. FinP4l instead models specific events - a market crash the year you retire, a job loss, an inflation surge - so you can see exactly what each one does to your plan and test what you would do about it.
Do I need to sign up or create an account?
No. There is no account, no email and no sign-up. Open the app, describe your situation and start testing decisions.
Where is my data stored?
Your plan stays in your browser - no account, nothing to sign up for. Optional AI and bank features send only what they need.
Is FinP4l really free? What's the catch?
Yes. FinP4l is free to use, with no ads, no commissions and no selling data. It is a public benefit project by DI SW Ventures, LLC. Supporters who chip in get early access to a few sections that are still in beta.
Can I calculate my FIRE number?
Yes. FinP4l finds the earliest age at which your savings, income and Social Security cover your spending every year through your life expectancy, with a cushion left at the end, and shows it on the chart. Your withdrawal rate draws a reference line for comparison.
Ready To Take Control?
Stop guessing and start modeling. See the impact of every decision in minutes.
No sign-up. No credit card. Just answers.
P.S. Try FinP4l in ChatGPT
Describe a plan in your conversation, explore the interactive projection, and compare what-ifs with the same FinP4l engine.
The connection and experience may change while we test this integration.
Public listing in progress
We're preparing FinP4l's submission to ChatGPT's regular plugin directory. You can try it now with a manual connection.
Set up in ChatGPT on the web. Your ChatGPT account and workspace must allow custom MCP connections; this option may not be available to everyone.
Connect in a few steps
- Open Plugins in ChatGPT. Choose +, then Add custom MCP server.
- Name it FinP4l and enter this server URL:
https://mcp-guest.finp4l.com/mcp - Choose No authentication, review the connection warning, and select Create as a plugin.
- Start a new chat, select @FinP4l, and try this example:
Create a synthetic US plan: age 45, single, Oregon, salary $100k/year, cash $250k at 2%, no contributions or debt, spending $3k/month before taxes, retire at 60, horizon 90.
- No FinP4l sign-in required
- 3 AI generations per chat per UTC day
- Guest plans expire 30 minutes after creation
- Scenario switches, library presets and settings do not use AI generations
Relevant inputs go to FinP4l's AI service; the guest plan is stored temporarily on our servers. Use fictional or approximate figures and leave out identifying details. Guest privacy details.