Retirement Calculator

Two retirees with identical average 7% returns over 25 years can have dramatically different outcomes purely based on when the bad years occurred — withdrawing during a market decline permanently removes capital that can never participate in the eventual recovery. Here's the mathematics of why sequence matters more than average, the "retirement red zone" concept, the bucket strategy that protects near-term spending from market timing, and how annuitisation eliminates sequence risk entirely for essential expenses.

The UK state pension pays the same flat rate to everyone who qualifies — a millionaire and a low-income retiree receive identical amounts with the same NI history. The US Social Security system pays proportionally to earnings history. Here's the flat-rate vs earnings-related design tradeoff, why means-testing creates a savings trap, how NI credits protect career gaps (caring for children, unemployment), and the defined benefit vs defined contribution risk transfer.

Delaying retirement by 2-3 years doesn't just give you "a bit more savings time" — it simultaneously increases contributions, shrinks the withdrawal period, and gives your existing corpus more years to compound before withdrawals begin. Here's why these three effects compound together to produce wildly disproportionate changes to retirement-readiness numbers, why early retirement (FIRE) requires such large corpora, and why semi-retirement offers a partial middle ground.

Sequence of returns risk means two investors with identical average returns can have completely different outcomes — the one who gets poor returns early runs out of money first. Here's how withdrawal rate, flexible spending strategies, annuity vs drawdown, and the annuity break-even calculation determine whether retirement lasts 15 years or 40.

The UK State Pension provides ~£11,500/year, US Social Security ~$22,800/year, and Australian super mandates 11.5% employer contributions. Here's how each system works, what the state provides vs what you must build yourself, and what the funding gap means for your personal savings obligation.