What age can I access my private pension?

Most private pensions can be accessed from age 57 from 2028. This calculator uses 57 as the default but you can adjust it to match your pension terms.

How much ISA savings do I need to retire early?

It depends on your target monthly income and the number of years before private pension access. This calculator estimates the required ISA value based on your inputs.

Does this calculator include inflation?

Yes. Results are shown in today's money by subtracting inflation from your expected investment return. A 7% return with 2% inflation gives a 5% real return.

Does my ISA continue to grow during drawdown?

Yes. This calculator assumes your ISA remains invested during drawdown, earning real returns on the remaining balance while you withdraw your monthly income.

Early Retirement ISA Bridge Calculator

Q: What is an ISA bridge?

An ISA bridge is a strategy where you use ISA savings to fund early retirement before accessing your private pension. Your ISA covers living costs during the gap years between stopping work and pension access.

Plan early retirement by calculating how long your Stocks & Shares ISA can fund your lifestyle before your private pension unlocks. Your ISA stays invested during drawdown — enter your details and see your full projection instantly.

Tip! — All results are in today's money. Real return = investment return minus inflation, so your purchasing power is preserved throughout.

Goal
Month/Year of Birth
ISA Balance (£)
Monthly Contribution (£)
⚠ Monthly contributions above £1,666 exceed the £20,000 annual ISA allowance. Consider splitting the excess into a GIA or SIPP.
Expected Return (%)
Inflation (%)
Private Pension Access Age
Target Early Retirement
Target Monthly Income (£)

Result

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ISA Balance Projection

Year	Age	ISA Balance
Run calculation to see your projection

GUIDE

ISA Bridge for Early Retirement

Understand how to build and draw down an ISA bridge, how much to save, and how to plan your gap years before pension access.

Read Guide →

How to Use the ISA Bridge Calculator

Step-by-Step

Select your goal — find your earliest retirement date, calculate how much you can spend, or check whether you're on track.
Enter your date of birth — used to calculate your exact age at retirement and pension access.
Enter your ISA balance and monthly contribution — what you have now and what you plan to add each month.
Set your expected return and inflation — the real return (return minus inflation) drives all projections.
Set your private pension access age — typically 57, rising to 58 in future.
Enter your target retirement date or income depending on your goal.
Click Calculate to see your result, full breakdown, and yearly projection table.

What Is an ISA Bridge?

An ISA bridge is a pot of Stocks & Shares ISA savings built up specifically to fund the gap between early retirement and private pension access. If you want to stop working at 50 but your pension is locked until 57, your ISA covers those 7 years of living costs.

How the Bridge Works

During the accumulation phase you contribute monthly and your ISA grows with investment returns. At early retirement you stop contributing and begin drawing a monthly income. Your ISA remains invested on the remaining balance throughout, so growth continues to offset withdrawals. The bridge is designed to reach exactly £0 at private pension access age — fully utilised.

Why ISAs Are Ideal for Early Retirement

Private pensions cannot be accessed until 57 (rising to 58). ISAs have no age restrictions — you can withdraw at any time with no tax on growth or withdrawals. That combination of flexibility and tax efficiency makes ISAs the natural vehicle for bridging the gap.

Understanding Real Returns

This calculator uses your expected investment return minus inflation to show results in today's money. A 7% return with 2% inflation gives a 5% real return. Projecting in real terms means the monthly income figure is directly comparable to what £2,000 buys you today — no guesswork about future prices.

Frequently Asked Questions

What is an ISA bridge?

An ISA bridge is a pot of ISA savings used to fund living costs between early retirement and the age you can access your private pension. It bridges the gap so you are not financially dependent on pension access.

Does my ISA keep growing during drawdown?

Yes. This calculator assumes your ISA remains invested throughout. During drawdown the remaining balance continues to earn real investment returns, which means your monthly income goes further than a simple pot divided by months approach.

Why does the ISA reach zero at pension access age?

The calculator solves for the level monthly income that fully utilises your ISA by pension access age. This is the most efficient use of the bridge — nothing left sitting idle once your pension takes over.

Are results shown in today's money?

Yes. Real return (investment return minus inflation) is used throughout. All figures represent purchasing power in today's terms, not inflated future values.

What if my ISA runs out before pension age?

The projection table flags depletion clearly with a ⚠ marker. You would need to increase contributions, reduce target income, or delay your early retirement date.

Can I contribute more than £20,000 per year to an ISA?

No. The annual ISA allowance is £20,000 (2026/27). Monthly contributions above £1,666 exceed this limit. The calculator warns you inline if your input exceeds the allowance.

Does this include the state pension?

No. This calculator focuses purely on the ISA bridge between early retirement and private pension access. State pension age (currently 67) is a separate consideration not covered here.