Pension Income Target Calculator

2,500 monthly target at 4% SWR = 750,000 pot needed (30,000 annually / 4%). Higher target at same rate = larger pot. Lower SWR at same target = larger pot for safety.

A worked example

Try the defaults: target monthly income of 2,500, withdrawal rate of 4%. The tool returns 750,000.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.

Here's a concrete scenario: suppose you want 3,000 per month in retirement and plan to withdraw 5% annually from your pot.

• Target monthly income: 3,000
• Annual income needed: 3,000 × 12 = 36,000
• Withdrawal rate: 5%
• Pot required: 36,000 ÷ 0.05 = 720,000

Lower your withdrawal rate to 4% at the same income target, and the pot grows to 900,000 — a 25% increase. The withdrawal rate dominates the calculation.

What moves the number most

The result responds to Target Monthly Income and Withdrawal Rate. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.

When this matters

This calculation surfaces in several contexts:

• Setting a savings milestone before stepping back from work
• Stress-testing whether a current pot can sustain a desired lifestyle
• Comparing the cost of different income targets side by side
• Understanding how sensitive your plan is to withdrawal rate assumptions

Why the number matters

Saving without a target is like driving without a destination — you'll make progress, but you won't know when you've arrived. This tool gives you a concrete figure to work toward, which is the first step in turning a vague intention into an actual plan.

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.

The model also does not account for inflation over the saving period or in retirement, changes to spending patterns, tax effects, or the timing of withdrawals within each year. It treats the withdrawal rate as constant, whereas real portfolios fluctuate and may require adjustment based on market conditions or personal circumstances.

Educational use only

This tool estimates the relationship between target income and required pot size. The output is for illustration and education. It is not a projection or a forecast of what your actual retirement will look like.

What to calculate alongside this

One figure by itself is fragile. The retirement pot size calculator, the pension drawdown rate calculator, and the pension income projection calculator cover adjacent ground — the answer to any one of them changes how you read the output from this tool.