yCalculator

Pension Drawdown Calculator

Last updated: April 2026

Pension Pot And Income

GBP

This is drawn from the pension. Add your state pension and other income separately below.

GBP

Take 25% tax-free lump sum?

You would receive £75,000 tax-free.

Growth And Inflation

Used to show real purchasing power over time.

%

Other Income And Planning Age

GBP

Part-time work, rental income, other pension income.

GBP

Retirement Income Headline

Pension withdrawal£15,000/year
State pension£11,502/year
Other income£0/year
Total annual income£26,502/year
Monthly income£2,209/month

Pot Projection

Starting pot after tax-free cash£225,000
Withdrawal rate6.7% of pot
Expected pot duration23 years (to age 90)
Your withdrawal rate of 6.7% is high. Your pot reaches age 90 in this constant-return projection, but it is very sensitive to poor early investment returns.

Sustainable Withdrawal

To make your pot last to age 90, withdraw £16,681/year (7.4% of pot).

Monthly: £1,390

Scenario Comparison

Growth RatePot lasts toFinal pot at 90
3%Age 87£0
5%Age 90£69,636
7%Age 90£265,077

Living Standards Check

Your total income£26,502/year
PLSA MinimumGBP 14,400/year
PLSA ModerateGBP 31,300/year
PLSA ComfortableGBP 43,100/year
StatusMinimum

Drawdown risk warning

Drawdown carries investment risk. Your pot value will fluctuate with markets. Poor early returns can significantly reduce pot longevity. This calculator uses simplified constant return assumptions. Always seek independent financial advice before accessing your pension.

What is pension drawdown?

Pension drawdown, also called flexi-access drawdown, allows you to keep your pension pot invested and withdraw money flexibly as you need it. Unlike an annuity, there is no guaranteed income, and the pot can run out if withdrawals are too high or returns are poor.

What is the 4% rule?

The 4% rule is a guideline suggesting that withdrawing 4% of your initial pension pot per year has historically lasted 30 years in many market scenarios. It is a starting point, not a guarantee, and UK retirees may prefer a more conservative rate.

What is sequence of returns risk?

Sequence of returns risk is the danger that poor investment returns early in retirement permanently damage your pot. If markets fall in the first years of drawdown and you keep withdrawing, the pot may have fewer units left to benefit from any recovery.

Should I take the 25% tax-free lump sum?

Taking tax-free cash is not always the right decision. If you do not need the cash immediately, leaving it invested in the pension and drawing it gradually may be more tax-efficient. Take advice before making this decision as it cannot be reversed.

Related calculators:

- Pension Annual Allowance Calculator

- Pension Tax Relief Calculator

- State Pension Calculator

About this calculator

The Pension Drawdown Calculator estimates how long a pension pot could last when withdrawals, investment growth, fees, tax, and inflation are considered. It is useful for comparing cautious, moderate, and high withdrawal plans before taking flexible income from a private pension. Use this expanded guide when you need more than a quick result. It explains the assumptions behind the Pension Drawdown Calculator, the records to gather, and the decisions the estimate can support. It is especially useful for people approaching retirement, pension holders comparing withdrawal plans, and advisers explaining drawdown risk in plain English. The strongest use of the page is scenario comparison: change one input at a time, compare the output, and keep a note of which assumption changed.

Pension drawdown method

The calculator projects the pension balance year by year by applying investment growth, subtracting fees, withdrawals, and any tax assumptions, then adjusting income for inflation if selected. The calculator result depends on the quality of the inputs and on the rule set or formula selected in the calculator above. For practical use, treat the output as a structured estimate: start with the core inputs, review the main outputs, then test the decision points that matter most to your situation. Key decisions include how long a pot may last, whether withdrawals are too high, how inflation and fees affect spending power.

  • end balance = start balance x (1 + growth - fees) - withdrawal
  • real withdrawal = nominal withdrawal / inflation factor
  • better estimate = accurate inputs + correct rule set + realistic assumptions
  • scenario difference = revised result - original result

How to use the pension drawdown calculator

  1. Enter the pension pot available for drawdown.
  2. Add the planned annual or monthly withdrawal.
  3. Choose investment growth, inflation, and fee assumptions.
  4. Add tax-free cash or taxable income settings where supported.
  5. Review the projected balance and the year the pot may run out.
  6. Gather the main inputs first: pension pot, planned withdrawals, investment growth assumption.
  7. Check supporting records such as pension statement and platform fee schedule before relying on a final number.
  8. Enter one realistic scenario first, using conservative assumptions where the future is uncertain.
  9. Review the main outputs: projected pot balance, possible run-out year, total withdrawals.
  10. Run at least one alternative scenario so you can see which input changes the answer most.
  11. Compare the result with GOV.UK and MoneyHelper pension drawdown guidance or the relevant contract, bill, statement, or professional document.
  12. Keep the calculation date and assumptions with your notes so you can revisit the estimate when rates, rules, or circumstances change.

Worked example

Simple retirement income check

Input: Pot GBP250,000, annual withdrawal GBP12,000, growth 4%, fees 0.6%

Calculation: Growth and fees are applied before withdrawals in each projection year.

Result: The projection shows whether the pot is likely to last through the chosen retirement period under those assumptions.

Inflation-linked income scenario

Input: A retiree starts with GBP14,000 annual withdrawals and increases them each year for inflation.

Calculation: The calculator projects rising withdrawals against growth and fees.

Result: The pot can run down faster than a fixed nominal withdrawal plan.

Poor early returns scenario

Input: The first three years have lower investment growth while withdrawals continue.

Calculation: Withdrawals are taken from a weaker balance.

Result: The projection shows why early market falls can have a lasting effect.

Drawdown risks

Drawdown gives flexibility, but it also leaves investment and longevity risk with the pension holder. Poor market returns early in retirement can have a larger effect than the same returns later, because withdrawals are being taken while the pot is down.

Sequence risk
The order of returns matters when regular withdrawals are taken.
Inflation risk
A fixed income buys less over time if prices rise.
Tax risk
Large withdrawals can push income into a higher tax band.

What to check before relying on the result

A useful Pension Drawdown Calculator result starts with the same evidence you would use if you were checking the answer manually. The calculator can organise the arithmetic, but it cannot know whether a payslip is final, a bill is estimated, a quote excludes fees, or a personal circumstance has changed since the last statement.

Before making a decision, compare the calculator result with the source document that controls the real outcome. For this topic, that usually means checking GOV.UK and MoneyHelper pension drawdown guidance. If there is a difference between the calculator and an official statement, contract, assessment, or professional advice, treat the official document as the stronger source.

pension statement
Use this as supporting evidence for the calculation. If it is out of date, estimated, or based on a different period, the calculator output may look precise while still being wrong for the decision.
platform fee schedule
Use this as supporting evidence for the calculation. If it is out of date, estimated, or based on a different period, the calculator output may look precise while still being wrong for the decision.
fund factsheets
Use this as supporting evidence for the calculation. If it is out of date, estimated, or based on a different period, the calculator output may look precise while still being wrong for the decision.
retirement budget
Use this as supporting evidence for the calculation. If it is out of date, estimated, or based on a different period, the calculator output may look precise while still being wrong for the decision.

Inputs that usually change the answer

The most important input is not always the largest number on the form. Sometimes a date, threshold, percentage, eligibility flag, or timing assumption changes the result more than the headline amount. This is why scenario testing is more useful than a single calculation.

InputWhy it mattersWhat to double-check
pension potIt feeds directly into the estimate or changes which rule is applied.Check the period, units, eligibility, and whether the figure is final or estimated.
planned withdrawalsIt feeds directly into the estimate or changes which rule is applied.Check the period, units, eligibility, and whether the figure is final or estimated.
investment growth assumptionIt feeds directly into the estimate or changes which rule is applied.Check the period, units, eligibility, and whether the figure is final or estimated.
feesIt feeds directly into the estimate or changes which rule is applied.Check the period, units, eligibility, and whether the figure is final or estimated.
inflationIt feeds directly into the estimate or changes which rule is applied.Check the period, units, eligibility, and whether the figure is final or estimated.

How to interpret the output

The output should be read as a decision aid, not just a number. For Pension Drawdown Calculator, the useful question is often what the result means for timing, affordability, eligibility, comparison, or next steps.

projected pot balance
Use this output alongside the other results rather than in isolation. A monthly amount, percentage, date, or payback figure can look acceptable until fees, timing, evidence, or eligibility conditions are added.
possible run-out year
Use this output alongside the other results rather than in isolation. A monthly amount, percentage, date, or payback figure can look acceptable until fees, timing, evidence, or eligibility conditions are added.
total withdrawals
Use this output alongside the other results rather than in isolation. A monthly amount, percentage, date, or payback figure can look acceptable until fees, timing, evidence, or eligibility conditions are added.
sensitivity to growth and inflation
Use this output alongside the other results rather than in isolation. A monthly amount, percentage, date, or payback figure can look acceptable until fees, timing, evidence, or eligibility conditions are added.

Scenarios worth comparing

A single estimate is a snapshot. A better approach is to save a base case, then adjust one assumption at a time. This shows whether the result is stable or whether a small change in timing, rate, usage, income, or cost creates a very different answer.

ScenarioChange one assumptionWhat the comparison shows
Base caseUse the best current evidence.Shows the result you would expect if nothing important changes.
Conservative caseUse lower income, higher cost, slower growth, or less favourable timing.Shows whether the decision still works with less optimistic assumptions.
Improved caseUse the realistic upside, such as lower cost, better rate, higher usage, or stronger evidence.Shows the potential benefit without treating it as guaranteed.

Common mistakes and edge cases

Most errors come from using the right formula with the wrong assumption. Dates can be counted differently, rates can change, official thresholds can move, and real bills or contracts often include conditions that a simple calculator cannot infer automatically.

Sequence of returns risk is highest early in retirement.
Check this point before using the estimate for a payment, claim, purchase, application, employment decision, or health-related decision.
Taxable withdrawals can affect income tax bands.
Check this point before using the estimate for a payment, claim, purchase, application, employment decision, or health-related decision.
Fees compound over time.
Check this point before using the estimate for a payment, claim, purchase, application, employment decision, or health-related decision.
Drawdown does not guarantee income for life.
Check this point before using the estimate for a payment, claim, purchase, application, employment decision, or health-related decision.

Next steps after calculating

Once you have a result, write down the key assumptions and compare them with GOV.UK and MoneyHelper pension drawdown guidance. If the number affects a deadline, tax return, benefit claim, employment issue, medical question, finance agreement, or major purchase, use the calculator as preparation for a more formal check.

For lower-stakes use, the next step may simply be comparing two or three scenarios. For higher-stakes use, the next step should be checking the official guidance, speaking to the relevant organisation, or getting qualified advice before acting.

Important edge cases

  • Sequence of returns risk is highest early in retirement.
  • Taxable withdrawals can affect income tax bands.
  • Fees compound over time.
  • Drawdown does not guarantee income for life.

Limitations

This calculator is for education only and is not financial advice. Pension drawdown decisions can affect retirement security and tax. This is general retirement information and not regulated financial advice. The calculator is designed to support understanding and planning, but it cannot verify documents, predict future rule changes, or account for every exception. Use it as an estimate and check the official source before acting where the result matters.

  • Investment returns are uncertain.
  • The calculator does not guarantee income for life.
  • Speak to a regulated adviser for personalised retirement advice.
  • Check GOV.UK and MoneyHelper pension drawdown guidance for current rules, rates, definitions, and eligibility where relevant.
  • Do not rely on a single scenario where income, costs, dates, rates, usage, or health circumstances may change.
  • Keep records of the inputs used so that the estimate can be reviewed later.

Frequently asked questions

Is drawdown the same as an annuity?

No. Drawdown keeps the pension invested and flexible, while an annuity normally exchanges the pot for a guaranteed income.

Can I run out of money?

Yes. A drawdown pot can be exhausted if withdrawals, fees, tax, or poor returns are too high.

Is pension drawdown taxable?

Taxable pension withdrawals are normally subject to income tax, although some tax-free cash may be available.

What withdrawal rate is safe?

There is no guaranteed safe rate. It depends on age, investment risk, inflation, fees, tax, and whether other income exists.

Can I pause withdrawals?

Many drawdown plans allow flexibility, but provider rules and income needs should be checked.

Should State Pension be included?

Yes, retirement planning is clearer when State Pension, private pensions, savings, and work income are viewed together.

Related calculators

  • Pension Tax Relief Calculator
  • State Pension Calculator
  • Income Tax Calculator
  • Compound Interest Calculator

What does this mean?

This calculator is designed to help you understand the likely number before you make a decision or start an application.

Your result should be checked against official UK guidance, especially if your circumstances include dependants, exemptions, prior leave, or a complex immigration history.

Treat the figure as a planning tool rather than legal advice. Where the answer affects an application deadline or major payment, speak to an authorised adviser.

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