After reviewing dozens of financial tools on this site since 2009,\u00a0ProjectionLab<\/strong><\/a>\u00a0is one of the most comprehensive planning tools I’ve come across. It shows you how today’s financial decisions play out over the next 10, 20, and even 40 years, with a modern interface that makes financial planning something you actually want to do.<\/p>\n As a DIY retirement planner my entire adult life, I rely on tools to track my net worth, optimize my finances, and forecast the future. Skip the planning and you’ll spend your golden years wondering where all your money went.<\/p>\n Recently, my\u00a0$408,000 household budget<\/a>\u00a0got shredded by critics all over the internet. 3.7 million views and 1,500+ comments later, most of it was people insisting the family was doing everything wrong.<\/p>\n So I figured I’d run that exact household through ProjectionLab and let the math settle it. I’ll show how the family can improve their budget and grow their net worth. And $408,000 isn’t a number I invented. It’s what a family of four reportedly needs to live comfortably in San Francisco<\/a>.<\/p>\n <\/p>\n ProjectionLab<\/a><\/strong> is a professional-grade financial and retirement planning tool that lets DIY planners model their entire life, run \u201cwhat if\u201d scenarios, and plan for retirement.<\/p>\n ProjectionLab is bootstrapped, independent, and run by a small, passionate team. It’s used by hundreds of thousands of households who have modeled more than $250 billion in assets on the platform.<\/p>\n ProjectionLab has strong roots in the financial independence community<\/a>, a movement I helped kickstart in 2009. It shows in how the tool handles the parts of retirement planning most tools ignore or oversimplify: long retirements, taxes and healthcare costs (including ACA subsidies), Roth conversions, early withdrawal strategies, and estate and legacy planning. <\/p>\n It’s the best tool for anyone pursuing financial independence, early or traditional retirement.<\/p>\n When I was building the $408K household case study, I wanted to see how a few strategic financial planning decisions could take them from living paycheck to paycheck<\/a> to thriving and shave years off their working careers. Originally, I modeled for them only having $1 left of cash flow left for emergencies, which clearly was not enough. <\/p>\n Cutting expenses was the obvious starting point. But the real power came from testing \u201cwhat if\u201d scenarios. What if they maxed out their 401(k)s instead of only contributing $30,000 between them? What if they considered geoarbitrage<\/a> in the future? What if they decided to cut out $90,000 a year in private grade school tuition, and so forth. In this scenario, an extra $1.38 million is what will happen.<\/p>\n Being able to map out a plan and see progress in real time provides clarity and confidence. When the temptation arises to splurge on a business-class upgrade or keep up with peers with a new car, having a visual representation of your goals helps you stay grounded. Revisiting a plan refocuses your priorities and reminds you what you’re working toward.<\/p>\n Testing \u201cwhat if\u201d scenarios helps you see which decisions are likely to matter most, rather than endlessly debating them in your head. It makes the process fun and exciting, and a feature I think most of you will enjoy.<\/p>\n I tested out what if I poured my assets into a $9 million Honolulu mansion<\/a> and the model confirmed it wasn\u2019t a good idea. So sad! But also great confirmation to stop day dreaming.<\/p>\n Most retirement calculators or basic planning tools rely on default assumptions or are a black box. ProjectionLab gives you full control over every assumption, while staying approachable and easy to use.<\/p>\n What I love is how much of your actual life you can represent. <\/p>\n You can set any milestones that matter to you: financial independence, buying a house<\/a>, kids starting college, a net worth target, a retirement date. And you can dynamically control your plan with milestones as start and end dates for income, expenses, or other plan events. Your plan and Chance of Success show you when you’re likely to reach each one and how confident you can be in the outcome.<\/p>\n I was even able to use ProjectionLab\u2019s fantastic wealth-planning tools to explore whether it\u2019s possible to help children become millionaires before they leave home<\/a>. After all, if AI is going to destroy millions of jobs in the future, then parents had best try to make their kids as wealthy as possible before they graduate. <\/p>\n The Sankey cash flow chart is a useful financial visualization. It shows where your money flows in a given year: income sources on the left, outflows on the right, with taxes, savings, contributions, and spending all visible in a single diagram. You can step through each year and watch how your cash flow shifts as you move through different phases of life.<\/p>\n Tax analytics are even more detailed. ProjectionLab breaks down your estimated taxes by type (federal, state, local), plots your effective and marginal rates over time, and so much more. If you’ve ever wondered how your future taxes will look, this is where to get the answer.<\/p>\n One of the biggest pushbacks on my $408,000 budget post was that my 32% total effective tax rate was too high. I like to be conservative with my assumptions, but the critics had a point.<\/p>\n ProjectionLab pegs the total effective tax rate for this household closer to 27.72% after all deductions. That is more realistic, and it hands the family roughly $17,460 a year that I had previously written off to the government. Of course, always consult with a tax expert if you’re not sure. <\/p>\n You can run Monte Carlo simulations across thousands of market scenarios and see the range of possible outcomes. There’s no such thing as a 100% chance of success. However, if you can get your financial play up to a 90% success rate or higher, you should feel highly confident you’ll meet your financial goals. <\/p>\n You can also backtest your plan against real historical periods, including the Great Depression, the dot-com bust, and the 2008 financial crisis<\/a>. <\/p>\n The block bootstrap methodology goes further, shuffling consecutive slices of historical returns to generate more possible market variations while preserving realistic year-to-year patterns. Both ground your projections in real market behavior rather than only randomly generated market sequences. As a DIY retirement planner, you want to hedge against sequence of return risk once you retire. <\/p>\n The flexible spending feature allows you to set rules that reduce discretionary spending when markets drop and increase when they recover, like: \u201cIf the market drops 30% from its all-time high, reduce discretionary spending by 60%.\u201d Tag your expenses as Essential or Discretionary, and the simulation adjusts accordingly.<\/p>\n Tax planning is one of the biggest financial levers available. The difference between a basic withdrawal strategy<\/a> and an optimized one can add up to hundreds of thousands of dollars over a long retirement. <\/p>\n But coordinating Roth conversions<\/a>, drawdown order, capital gain harvesting, IRMAA thresholds, and ACA subsidies by hand can be complicated, easy to get wrong, or cost thousands of dollars when done with a professional.<\/p>\n ProjectionLab helps you model and optimize across all of these strategies. You set a target, like \u201cstay in the 22% bracket\u201d or \u201ckeep income below an ACA subsidy threshold<\/a>,\u201d and ProjectionLab optimizes around it. Roth conversions, withdrawals, and gain harvesting all work together toward that target.<\/p>\n Optimize lets you choose what to prioritize, such as lower lifetime taxes, higher net worth, increased ACA subsidies, reduced IRMAA, or a larger net legacy. It evaluates hundreds of strategy combinations and presents a winner.<\/p>\n Two pieces of retirement planning most tools either oversimplify or leave out.<\/p>\n ProjectionLab models Medicare with automatically estimated costs for Part B, Part D, and supplemental coverage. IRMAA surcharges are calculated using the 2-year income lookback, so you can see how a Roth conversion or large capital gain this year would increase your Medicare premiums two years from now.<\/p>\n For Social Security, you enter your Primary Insurance Amount from your SSA statement and pick a claiming age<\/a>. The engine handles the rest: early reduction factors, delayed retirement credits, spousal and survivor benefits, and the earnings test if you plan to claim while still working. <\/p>\n Because Social Security is integrated with the rest of the plan, you can see how claiming timing affects your tax bracket, provisional income, IRMAA thresholds, and withdrawal sequencing, not just the monthly benefit figure. <\/p>\n One thing elder retirees, including my father, keep telling me is how they didn’t properly forecast their Required Minimum Distribution taxes. So ProjectionLab can help you better consumption smooth beforehand.<\/p>\n ProjectionLab also models what you leave behind, not just what you spend.<\/p>\n The estate view shows your projected net legacy: what heirs receive after taxes, settlement costs, and remaining debt. This is more useful than just\u00a0 net worth because it accounts for the tax treatment of different account types.<\/p>\n Charitable giving is also modeled directly. Qualified Charitable Distributions (QCDs) let you direct IRA distributions to charity, satisfying your RMD while keeping the distribution out of taxable income. <\/p>\n Donor-Advised Funds<\/a> (DAFs) let you contribute appreciated assets and take the deduction. If giving is part of your plan, it can be built in properly rather than treated as another expense.<\/p>\n ProjectionLab is built for both DIY retirement planners and financial professionals, which means expert help is available when you want it.<\/p>\n You can book a 1:1 session directly with the ProjectionLab team, which is useful if you’re getting started and want help learning how to use the tool. These sessions cover how to use the tool, not personal financial advice.<\/p>\n If you’re looking for professional advice, there’s also a directory of independent financial advisors and coaches who use ProjectionLab Pro with clients. They can help you interpret your plan, refine your strategy, or offer financial advice.<\/p>\n ProjectionLab does not try to upsell advisory services. You also get great human support and access to an active community on Discord<\/a> and Reddit<\/a>.<\/p>\n Basic (Free).<\/strong> Includes core financial planning, forecasting, Monte Carlo simulations, and historical backtesting. No credit card required, and your data is saved.<\/p>\n Premium ($129\/year).<\/strong> Unlocks the full feature set including cash flow visualizations, Compare Mode, tax optimization, Roth conversions, drawdown strategies, estate planning, and more. Includes a 7-day free trial.<\/p>\n For comparison, $129 per year would get you about a half hour with many fee-only financial planners. ProjectionLab enables you to update your plan whenever life changes and run as many scenarios as you need.<\/p>\n ProjectionLab is best for:<\/p>\n![\"Projectionlab](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/1_plan_overview.png\")
<\/figure>\nWhat Is ProjectionLab?<\/strong><\/h2>\n
Quick Take<\/strong><\/h2>\n
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The $408,000 Case Study and Compare Mode<\/h2>\n
![\"Projectionlab](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/2_compare_public_school.png\")
<\/figure>\nHow Detailed Can Your Plan Be?<\/h2>\n
![\"Chance](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/3_CoS_milestones.png\")
<\/figure>\nUnderstand Where Your Money Goes<\/h2>\n
![\"ProjectionLab](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/4_cash_flow.png\")
<\/a><\/figure>\nTax Analytics To Help You Save<\/h2>\n
![\"Tax](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/5_tax_analytics.png\")
<\/figure>\nStress-Test Your Financial Plan<\/h2>\n
![\"Chance](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/6_CoS_fan.png\")
<\/a><\/figure>\nOptimize Your Plan and Taxes<\/h2>\n
![\"Optimization](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/7_tax_strategy.png\")
<\/figure>\n![\"\"](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/8_optimize-1.png\")
<\/figure>\nMedicare and Social Security<\/strong><\/h2>\n
![\"Using](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/9_ss_estimate-1.png\")
<\/figure>\nEstate Planning and Charitable Giving<\/h2>\n
![\"Estate](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/10_estate.png\")
<\/figure>\nGet Help When You Want It<\/h2>\n
How Much Does ProjectionLab Cost?<\/h2>\n
![\"ProjectionLab](\"https:\/\/i2.wp.com\/financialsamurai.com\/wp-content\/uploads\/2026\/07\/11_pricing-1.png\")
<\/a><\/figure>\nWho Should Use ProjectionLab?<\/h2>\n