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Annuity Cost Of Delay Calculator

Created by Dan Franks

Last Updated: 26th July 2025

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How to use this calculator

Enter your age, gender, pension pot value, and the number of years you are considering delaying annuity purchase. You can set the percentage of your pot to be taken as tax-free cash, and adjust the assumed annual growth rate during the delay period.

Select the type of annuity you expect to buy: level, escalating, or inflation-linked. Enter your chosen annuity rate range, and if relevant, an expected annual change in rates. You can also indicate whether an enhanced annuity may apply due to smoking or health conditions.

Provide your expected annual State Pension, marginal tax rate, and inflation assumption. The results will update automatically as you adjust any input. There is no need to press a submit button.

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How this calculator works

This calculator compares two retirement scenarios: buying an annuity now, or after a set delay. It estimates total income in each case, using consistent inputs and standard assumptions.

The calculation is based on the following formula:

Projected income = Pot value × Annuity rate (%)
(adjusted for tax, inflation, and life expectancy)

If a delay is selected, the pension pot increases annually using your chosen growth rate. The adjusted pot is then used to buy an annuity at the projected future rate. Where applicable, an enhancement is applied.

Annual income is calculated for each year of expected life, based on your age and gender. Escalating and inflation-linked annuities increase each year at the selected rate.

Income is combined with State Pension and taxed after applying the personal allowance. If inflation adjustment is selected, future income is shown in real terms.

Results show total net income for each scenario and the difference between them, expressed in pounds and as a yearly average.

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Understanding the limitations of this calculator

This calculator is designed to compare two retirement timings using consistent assumptions. It does not model the full range of annuity products, such as drawdown options, fixed-term plans, or investment-linked annuities.

It does not assess eligibility for means-tested benefits or incorporate other income sources. No projections are made for changes in tax rules, annuity pricing, or personal circumstances over time.

The scope is limited to regular lifetime income based on a single annuity purchase. Irregular spending, phased access, and capital flexibility are not included.

The figures are calculated using consistent inputs and standardised assumptions. For typical retirement decisions, the outputs offer a fair indication of the potential impact of delaying annuity purchase.

The model does not produce tailored forecasts, but it reflects the structure and scale of differences most users can expect when comparing timings. All results are illustrative and should be viewed as a guide to the trade-offs involved.

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Quick and easy

Annuity cost of delay calculator

Calculate the potential cost of delay by comparing the total net income you’d receive if you buy an annuity now versus after a delay, factoring in pot growth, annuity rates, tax, inflation, and life expectancy.

Options

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Results

Disclaimer: This Cost of Delay Calculator provides estimates based on current average annuity rates and typical assumptions. It is for illustrative purposes only and does not constitute financial advice. Your actual delay costs, annuity rates, and income will depend on your individual circumstances, the provider you choose, prevailing market conditions, and tax regulations at the time you retire. We recommend seeking independent financial advice before making any decisions about delaying your pension or purchasing an annuity.

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Updated regularly using trusted UK sources.

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What is the cost of delay and why it matters

When you use your pension pot to buy an annuity, you exchange a lump sum for a guaranteed income, usually for the rest of your life. You can buy an annuity from age 55 (rising to 57 from 2028), whether or not you have retired.

If you delay buying an annuity, you won’t receive any income during the waiting period, but your pension pot may grow if it remains invested. You will also be older when you eventually buy, which can increase the annual income offered. Some people delay in the hope that annuity rates will rise, or because they are not yet ready to draw an income.

The “cost of delay” refers to the difference in outcomes between two options:

  • Buying an annuity now and receiving income for more years

  • Waiting, then buying a potentially higher income annuity for fewer years

Because annuity payments usually stop when you die, delaying reduces the number of years in which payments can be made. The longer you wait, the fewer years you are likely to receive them, which can offset the benefit of a higher rate.

Whether delaying leads to more or less income over your lifetime depends on several factors, including investment growth, changes in annuity rates, and your longevity after purchasing the annuity.

If you delay and live longer than average, and annuity rates or your pension pot improve, you may receive more income overall. But if you don’t live long after buying the annuity, or if growth and rates are poor, delaying could reduce the total income you receive.

Understanding this trade-off is important when deciding whether to buy an annuity now or wait.

Would you like more information about the cost of delaying an annuity?

To get a deeper understanding of how it works and if it is right for you, we recommend visiting the following websites:

👉🏼 Investment Sense
👉🏽 Standard Life
👉🏿 My Pension Expert

Please note: We are not affiliated with, endorsed by, or responsible for the content of any third-party websites linked to from this site. Links open in a new tab.

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