PeakWorth™ vs YNAB — Discipline Today vs Strategy for Tomorrow

What YNAB is genuinely great at

YNAB (You Need A Budget) is built around four rules: give every dollar a job, embrace true expenses, roll with the punches, age your money. It's less about reporting and more about behavior change — and it works. Long-time users routinely report saving 5–10% more of income within the first year.

• True zero-based budgeting (every dollar is assigned)
• Strong opinionated methodology that actually changes habits
• Excellent education library and community
• Real-time guilt-free 'what's left in this category' tracking

What YNAB doesn't do

YNAB is fundamentally a monthly budgeting tool. It doesn't try to project your wealth 30 years out. It doesn't tell you when you can stop working, what your portfolio needs to be, or how much your tax-advantaged accounts will compound to. That's not its job.

• No long-term net worth projection
• No FI Age / Coast FIRE / Barista FIRE calculations
• No tax-aware retirement modeling
• No 'what if' scenario engine for major life decisions

How they fit together

YNAB makes you save. PeakWorth shows you what that saving actually buys. A 25% savings rate (the kind of habit YNAB instills) is what gets most people to early FI — but you can't see that finish line inside YNAB. PeakWorth makes it concrete: 'at your current savings rate, you hit FI at age 53.'

How PeakWorth turns YNAB's discipline into a dated FI Age

YNAB's payoff is a higher savings rate — but the app deliberately stays in the current month, so it never shows you what that rate buys over a lifetime. PeakWorth picks up exactly there: it takes the savings rate YNAB helped you build and runs it through a year-by-year deterministic simulation to age 95, accounting for federal and state taxes, employer match, Social Security, and inflation.

It reports your FI Age — the year your portfolio reaches ~25× the expenses it must cover after Social Security — roughly 20× your total annual expenses — and re-runs the moment your rate changes. So the extra 5% of income YNAB helps you free up isn't just 'good discipline'; it's a concrete number of years pulled off the date work becomes optional.