For Serious Financial Independence Planner

Get Ready for Financial Independence

Walk your FI Scenarios—loans, kids, healthcare, travel—see when you can leave your day job, dive into passion work, and live the life you want.

Ready to find out? Let’s get started

Totally Free • No Sign-Up • Privacy Guaranteed

ACCUMULATE
📈

Savings Projection

Visualize and strategize your savings plan to build the wealth needed for financial independence.

SPEND
⚖️

Dynamic Expenses

Optimize your lifestyle with holistic, dynamic expense forecasts that evolve as you progress through every life stage.

SUSTAIN
🛡️

Stress-Test

See if your plan survives historical market crashes

Features That Make Financial Independence Possible

Customize expenses, model income sources, test investments, and handle risks that other planners underestimate

Lifestyle Cost Planning
Expenses
Financial Commitments

Ongoing Commitments

Plan for mortgage, education costs, and any long-term obligations that carry on after you leave your 9–5.

Expenses
Healthcare Costs

Healthcare Costs Surge

Be prepared for unavoidable medical costs that rise with age and high inflation.

Expenses
Irregular Expenses

Irregular Expenses

Plan for recurring expenses every few years like car replacement or 1-time costs like home renovation.

Working Years
Working Savings

Exit-Age/Retirement Fund Projection

Project how your Exit-Age/Retirement funds will grow from your contributions by allocating them to various funds—each with its own return rate—using customizable incremental patterns as your career progresses.

Have Investments?
Expected Returns

Expected Return Or Back-test

Set expected returns or back-test with historical data to see potential outcomes

Have Investments?
Minimum Spending

Spending Control

Reduce selective expenses to acceptable level during tought market

In Retirement?
Continuous Income

Post-Exit Income Planner

Project additional revenue from rentals, property sales, and part-time work after you leave your 9–5.

Retiring Early?
Pension and Investment

FIRE Transition Strategy

Manage investment withdrawals during early retirement before pension access

Have Investments?
Asset Allocation

Age-Based Asset Allocation

Automatically shift from growth to preservation, adjust asset allocation as age to reduce risk.

Have Investments?
Portfolio Rebalance

Portfolio Rebalancing

Pause rebalance during tought market and control rebalancing frequency

Built for privacy. Auditable by design

Your financial data is all about privacy. You can save and load your scenarios locally in your browser. For the utmost privacy, use Docker to run the application locally, or visit NumberWalk.com, which performs calculations without using cookies, logs, or storage. NumberWalk is open source, ensuring complete transparency and giving you the confidence that your data remains private.

NumberWalk Data Control and Privacy Visualization

Why Choose NumberWalk?

Holistic Coverage

Covers both pre-retirement saving and post-retirement spending. Addresses often-overlooked factors like healthcare inflation.

True Personalization

Adapt to your unique situation rather than standard templates. Fine-tune every aspect of your retirement plan.

Built By Early Retiree

Created by someone who understands real retirees' needs with real-world challenges built into every calculation.

Privacy-First Approach

No account required, completely anonymous planning without data collection or tracking.

Our Mission

NumberWalk was created as a contribution to the retirement planning community, built by someone who experienced firsthand the challenges of planning for financial independence.

A Tool, Not a Replacement

While NumberWalk offers powerful simulations, we recognize the value of professional financial advisors who provide personalized guidance, tax expertise, and emotional support during financial decisions. This tool complements, rather than replaces, professional advice.

Community-Minded

We believe financial planning tools should be accessible to everyone. NumberWalk exists to help people understand the dynamics of retirement planning through interactive modeling, regardless of their wealth level or financial literacy.

The simulations provided are educational tools to help with planning decisions. For comprehensive financial advice tailored to your specific situation, we encourage consulting with a qualified financial professional.

Why Traditional Tools Aren't Enough

Old Way

  • Assumes constant withdrawal throughout retirement
  • Uses single inflation rate for all expenses
  • Requires manual calculation of retirement savings
  • Oversimplified investment assumptions with flat return
  • Missing effective risk handling as part of the plan
  • Must re-enter data or save data on the server
  • Missing important consideration for FIRE planning

NumberWalk Way

  • Adapts to changing expenses at different life stages
  • Different inflation rates for different expense types
  • Help you to project with contributions, returns, & growth
  • Real history market testing*
  • Switch to Minimum Spending for reducible expenses
  • Save/load plans locally—adjust easily with full privacy
  • Cater for pension fund withdrawal constraints

* Why We Use Historical Testing Instead of Monte Carlo

Market crashes are a historical pattern. When one hits early in retirement, your financial plans may suffer. Unlike random simulations, historical testing can provide insight and simulate how they could impact your retirement cash flow, so you can have a plan B or make adjustments if needed.