Concepts behind the plan

The eight birthdays that change retirement math — catch-up contributions, Rule of 55, Social Security windows, RMDs — plus Fidelity savings checkpoints.

Three forces that take money on a fixed schedule — required withdrawals, working-years tax, and mortgage interest — and how to price each.

How to figure out your required annual savings to retire at your target age, using Monte Carlo analysis instead of a single average-return guess.

Learn how Monte Carlo simulations can help you plan for a secure retirement by modeling thousands of possible market scenarios and giving you a probabilistic view of your financial future.

A comprehensive guide to planning for early retirement, including FIRE movement strategies, withdrawal rate considerations, and unique challenges of retiring decades before 65.

Split spending into non-negotiable essentials and flexible wants, cover the floor with guaranteed income, and hold cash for the years before pensions and Social Security kick in.

Side-by-side comparison of the three spend-down strategies: which guarantees stable income, which never runs dry, and which spends to zero on purpose.

How the constant percentage withdrawal strategy works, why it can never fully deplete your portfolio, and the income-variability tradeoff that comes with it.

How the amortization-based Variable Percentage Withdrawal method calculates a rising withdrawal percentage designed to spend your portfolio down evenly by a chosen age.

Everything you need to know about the 4% rule for retirement withdrawals, including its origins, limitations, and how to adapt it for your personal situation.

How guardrail strategies give you steady income that only adjusts when your portfolio drifts far off track — and how to set your raise and cut lines.

Two retirements with identical average returns can end opposite — because a crash early hurts far more than a crash late. How to test your plan against it.

How Nick Maggiulli's six net-worth tiers, the 1% rule for opportunities, and the 0.01% rule for daily spending can guide financial decisions at every wealth level.