Split retirement pot into 3 buckets by time horizon for stable income.

A 600,000 retirement pot split 15% cash, 35% bonds, 50% equities produces 90,000 cash, 210,000 bonds, 300,000 equities. The cash bucket funds 2-3 years of spending without selling anything; when equities have a bad year, you draw from cash or bonds while the growth bucket recovers. It's the same portfolio in aggregate — separated so bad markets don't force sales.

How to use it

Enter total retirement savings and the percentage allocation for each bucket. The three percentages should sum to 100. Typical early-retiree allocations: 10-15% cash, 30-40% bonds/conservative, 45-60% equities. Later in retirement, shift toward cash and bonds.

What the result means

Primary is the equity bucket (the growth engine). Secondary rows show cash and bond bucket sizes. Each bucket maps to a time horizon: cash funds years 1-2 of income, bonds years 3-10, equities everything beyond.

When to rebalance

Refill the cash bucket from bond returns in good years. Avoid selling equities in down markets — that's the whole point. Annual rebalancing, with flexibility in crisis years, is the standard approach.

Run it with sensible defaults

Using total retirement pot of 600,000, cash bucket of 15%, bond bucket of 35%, equity bucket of 50%, the calculation works out to 300,000.00. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Total Retirement Pot, Cash Bucket %, Bond Bucket %, and Equity Bucket % — do not pull with equal force. The rate and the time horizon usually dominate — compounding means a small change in either reshapes the final figure more than a similar shift in contribution size. Test this by doubling one input at a time.

How the math works

Each bucket amount is the pot times its percentage. Flags when percentages don't sum to 100. The bucket strategy is a framework for behavioural resilience during retirement — having dedicated short-term cash means market downturns don't force equity sales at the wrong time. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".

Turning the result into a plan

A projection is just a starting point. The real work is setting the monthly amount aside automatically so the saving happens before you can spend it. Most people who hit savings goals set up a standing order on payday; most who miss them rely on willpower at month-end.

What this doesn't capture

The calculation assumes a steady savings rate and a stable interest rate. Real saving journeys include emergencies, windfalls, and rate changes — especially in easy-access products. The figure is a direction of travel, not a guarantee.