Pension Gap UK 2026/27 — Retirement Income Planning

A pension gap is the difference between the retirement income you want and the income your current plan may provide under stated assumptions. It is not a bill, a required savings amount or a prediction of what markets will deliver. It is a planning question: if your target retirement income is higher than the income modelled from your pension pots, State Pension and other resources, what assumptions should you review and what actions could narrow the gap?

The UK Pension Gap Calculator→ models one current defined-contribution pot, annual employee and employer contributions based on salary, retirement age, a gross target in today’s pounds, State Pension and defined-benefit income assumptions, and nominal growth, inflation and a first-year withdrawal-rate illustration. It shows return sensitivity and an illustrative monthly contribution to close the modeled capital gap. It does not model fees, salary growth, tax, multiple pots, ISAs or other assets, determine State Pension entitlement, select an investment fund or provide regulated financial advice.

This guide explains how to use a pension-gap scenario for the UK 2026/27 tax year. It separates official facts—such as the State Pension forecast, the normal minimum pension age, the Lump Sum Allowance and pension annual-allowance rules—from assumptions that belong to your personal model.

What a pension gap measures

Suppose your target is a planned annual retirement income. The model estimates how much income may come from projected pension pots, a selected withdrawal rate, the State Pension input and any other income you include. The pension gap is the difference between the target and that modelled income.

The result depends on the definition of the target. Is it today’s spending in real terms, or a future nominal amount? Does it include housing, healthcare, travel, gifts, tax, long-term care or a mortgage that will be cleared before retirement? A target that is too low creates false confidence, while an unnecessarily high target can make the gap look impossible.

Start with household spending rather than a pension percentage. Separate essential costs from discretionary costs, then consider how each may change after work. A pension gap is meaningful only when the target has a clear purpose and time horizon.

Nominal and real values

Inflation is one of the most important assumptions in a long-term projection. A future pound balance is not automatically equivalent to a pound spent today. If the model uses a nominal growth rate and a separate inflation assumption, explain whether the target is expressed in today’s purchasing power or future pounds.

Do not subtract one guessed inflation rate from one guessed investment return and present the difference as certain. Use low, central and high scenarios. Test what happens if inflation remains higher than expected, if contributions rise with pay, or if retirement is delayed.

The distinction also applies to the State Pension. A current published rate is useful evidence for today’s planning, but future uprating, personal entitlement and purchasing power are separate questions. Use your GOV.UK forecast and National Insurance record rather than assuming that the full rate will automatically be your future payment.

State Pension input

GOV.UK publishes information on the new State Pension, qualifying years and the National Insurance record. The amount you receive depends on your record and circumstances, so a planning model should use your personal forecast where available.

The full new State Pension rate is not an entitlement for every person. Qualifying years, credits, contracted-out history and gaps can affect the forecast. Check the GOV.UK new State Pension guidance and personal forecast before entering a value.

In the model, run at least two State Pension cases: the amount supported by current evidence and a cautious case if your record or future contributions are uncertain. Do not use the full rate simply because it makes the pension gap smaller. A gap that survives a conservative State Pension assumption is more decision-relevant.

State Pension age and access timing

State Pension age depends on date of birth and the government timetable. GOV.UK provides the State Pension age rules and a personal forecast route. A pension projection that starts private withdrawals before State Pension age needs a bridge period.

The calculator may use a simplified age or State Pension assumption. That is not a personal age determination. Check the GOV.UK forecast and timetable, especially if your retirement date is close to an age boundary or you plan to stop work before State Pension begins.

Private pension access is a separate issue. HMRC guidance explains that the normal minimum pension age is scheduled to rise from 55 to 57 on 6 April 2028, subject to scheme and protected-age exceptions. Do not assume that every pension can be accessed at the same age or that an ISA bridge is always required.

Existing pots and contributions

Enter current pension values using recent provider statements and identify whether the value is a workplace defined-contribution pension, SIPP, personal pension, defined-benefit promise or another arrangement. GOV.UK pension options cover broad routes, but the provider’s terms determine charges, investment choices, guarantees and access conditions.

Separate employee contributions, employer contributions and planned additional contributions. An employer contribution can materially change the retirement projection, but it may depend on employment and scheme rules. A contribution you cannot sustain is not a reliable long-term assumption.

Use an affordable contribution and then test increases. Model a baseline, an increase linked to a pay rise and a pause during an income shock. The purpose is not to create a perfect forecast; it is to show which decisions have the largest effect on the gap.

Growth, fees and sequence risk

Investment growth is uncertain. A smooth annual rate makes the calculation possible, but real returns vary and a large fall close to retirement can affect the amount available for withdrawals. Run low, central and high growth scenarios and explain whether the rates are before or after fees.

Fees reduce the amount that remains invested and the future growth on that amount. Include fund, platform, advice, administration and any other recurring charges that apply. A lower fee is not automatically a better investment if exposure, risk, service or pension arrangement differs, but a missing fee can materially overstate the projected pot.

Sequence risk matters when withdrawals begin. Two portfolios can have the same long-term average return but different outcomes if one experiences a fall at the start of retirement. A single average growth rate cannot model every sequence. Consider a cash reserve, flexible withdrawals and a review process rather than relying on one fixed rate.

Drawdown is an assumption, not a guarantee

The calculator may use a selected withdrawal rate to translate a pension pot into an annual income scenario. That rate is not a universal safe-withdrawal rule or a guaranteed product income. A higher withdrawal produces a larger initial income but may increase the risk that the pot falls too quickly. A lower rate may preserve capital but require other income or spending flexibility.

Review the assumption when life expectancy, health, investment risk, inflation, charges and other income change. If you need a guaranteed income, an annuity is a separate product decision with pricing and terms that must be obtained from providers. GOV.UK explains the broad pension options, but the model cannot choose between drawdown, an annuity or another arrangement.

Do not present a drawdown result as “the pension you will get”. It is a scenario based on an assumed pot, return, fee, inflation and withdrawal path. Use it to ask what range of outcomes your plan could tolerate.

Pension tax relief and annual allowance

The amount of pension tax relief and annual allowance available depends on the person, the contribution method and the pension arrangements. GOV.UK publishes pension tax-relief and pension-scheme rates guidance. A contribution may reduce current tax while also reducing current disposable income; those are separate planning effects.

Annual Allowance, carry-forward, the Money Purchase Annual Allowance and tapered rules may matter for some people. GOV.UK explains how unused annual allowances can be checked for carry-forward from earlier tax years. Do not use a gap calculator to assume that any desired contribution will receive relief or fit within available limits.

Employer contributions can have different treatment from employee contributions. Check payroll, scheme rules and current HMRC guidance. If the model suggests a large AVC or personal contribution, verify relief headroom, carry-forward and affordability before acting.

Pension access and the ISA bridge

An ISA bridge is a separate-access asset used to fund spending before a pension can normally be accessed. Whether a bridge is needed depends on the retirement date, private pension access age, State Pension age, target spending and other income. An ISA has its own contribution and tax rules; the bridge is not a pension and does not remove investment risk.

The normal minimum pension age change from 55 to 57 is scheduled for 6 April 2028, with exceptions. Check the actual scheme and protected age. A person who has an older protected right, a defined-benefit scheme or a different pension arrangement may have a different access position.

Model the bridge separately. Estimate the years it must cover, the spending required, inflation, investment risk and whether the ISA or other asset is genuinely accessible. Do not double-count the same savings as both pension income and bridge capital.

Lump Sum Allowance and retirement tax

Retirement lump-sum tax is separate from the projected income. GOV.UK publishes the Lump Sum Allowance and information about tax on private pensions. The standard allowance and protections can affect how much can be taken tax-free, while previous lump sums and the arrangement matter.

Do not assume that taking a tax-free lump sum improves every pension-gap plan. Removing money from the pot can reduce future income; keeping it invested can create risk. Compare the intended use, tax treatment, withdrawal needs and the effect on the remaining pot.

The calculator may show gross income or a simplified withdrawal. It does not calculate every tax interaction in retirement, including Personal Allowance, other income, tax bands or benefits. Use current GOV.UK guidance and provider illustrations for the actual decision.

How to build a useful scenario

First, define the retirement target in today’s spending terms, then translate it into an appropriate gross-income target because the calculator excludes tax. Enter the DC pot and contribution details from provider evidence, and a State Pension figure supported by your GOV.UK forecast, not simply the full rate. The calculator excludes fees: account for provider charges separately, and use its return-sensitivity view to compare nominal-return cases while holding the entered inflation assumption constant.

Next, compare retirement ages. A later retirement may add contributions and reduce the period over which the pot must support withdrawals, but it may not be possible or desirable. A lower target may be realistic if housing costs fall, while healthcare or care costs may rise.

Finally, stress-test the plan. Stop contributions temporarily, reduce investment growth, increase inflation, lower the State Pension input and model a higher early-retirement spend. The aim is to find the assumptions that matter most and choose a review date.

Common mistakes

Common errors include using the full State Pension without checking a forecast, expressing a future target in today’s pounds without inflation, ignoring fees, treating smooth returns as guaranteed, using a withdrawal rate as a promise, and assuming a pension lump sum is always tax-free.

Other mistakes include counting employer contributions twice, treating an old provider statement as current, ignoring access conditions, overlooking previous lump sums, and contributing beyond available relief or annual-allowance headroom. A calculator can reveal a gap, but it cannot determine the product, tax or advice that will close it.

Frequently Asked Questions

Bottom line

A UK pension gap is a planning signal, not a forecast. Define the retirement target, use provider statements, base State Pension input on your GOV.UK forecast, include fees and inflation, and test a range of growth and withdrawal assumptions. Then review the actions that are actually available: sustainable contributions, employer benefits, retirement timing, an ISA bridge, spending flexibility and regulated advice where appropriate.

Use the UK Pension Gap Calculator→ to compare scenarios, then validate the result against your provider, State Pension forecast and GOV.UK guidance. The Pension Drawdown vs Annuity guide addresses a separate retirement-income choice; it does not replace a complete pension-gap plan.

Official sources

• GOV.UK: What you will get from the new State Pension — full-rate context and National Insurance record.
• GOV.UK: State Pension age — age timetable and personal forecast route.
• GOV.UK: Pension options — pension access and retirement-income choices.
• GOV.UK: Lump Sum Allowance — tax-free lump-sum rules and protections.
• GOV.UK: Pension schemes rates — pension allowance and tax-rate references.
• HMRC: Normal minimum pension age — access-age change and exceptions.
• GOV.UK: Adjusted net income — pension contributions and income-planning context.
• GOV.UK: Unused annual allowances — carry-forward information.

This guide is general educational information for the UK 2026/27 tax year. It is not personal pension, tax or investment advice, a retirement-income guarantee, or a determination of State Pension entitlement. Check current official guidance, provider documents and regulated advice before acting.