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    2029 Pension Changes Confirmed

    Find out how the new NI rules will affect your retirement pot

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    Retirement Savings and Investment Modeller

    Compare scenarios across Pensions, ISAs and GIAs to explore how different allocation strategies may affect projected retirement wealth. All projections are illustrative and depend on assumptions about growth, contributions and tax rates which may not reflect actual outcomes.

    These tools use mathematical models to illustrate the outcomes generated from the information you enter. Because in the real world markets, tax rules, and personal circumstances can change, the model's results should be viewed as possibilities rather than guarantees. The tools provide projections, comparisons, and potential implications only, and do not constitute personalised advice or recommendations. For specific guidance on investment, pension, or mortgage product decisions, please speak with an FCA-authorised financial adviser. Read full disclaimer

    Switch on to auto-allocate your strategy according to your tax and cash needs

    💰 Budget & Strategy

    🏦 Pension Settings

    Your 20-25% tax refund will be reinvested into ISA (then GIA) for additional growth.

    Pension Benefits:
    🎯 Tax Relief: +£500/month
    🏢 Employer Match: +£188/month

    Total Monthly Investment:
    💰 £1,000/month

    Strategy Analysis

    Projected outcomes for your selected allocation model

    Selected Model

    Tax-Efficient Growth Focus

    📊 Monthly Allocation Breakdown

    How your budget is distributed across accounts

    AccountMonthlyAnnual% of Total
    🏦 Pension£1,563£18,750100.0%
    Total£1,563£18,750100%

    Tax Reallocation (included in totals above)

    +£313/month│Basic rate relief (20%) auto-added to Pension by HMRC
    +£350/month│Higher-rate relief reinvested → Pension

    Annual tax refund via self-assessment: £4,200

    Wealth Growth Projection

    How account balances grow over time

    • Pension
    • ISA
    • GIA
    • Cash

    Age 35

    Total Projected Outcomes

    Total Wealth
    £1,665,419
    Pension Balance
    £1,517,017
    ISA Balance
    £93,667
    GIA Balance
    £45,124
    Total Tax Saved
    £197,828
    Effective Tax Rate
    51.5%
    Why this works:

    With your higher rate (40%) tax status, pension contributions offer powerful tax relief. This scenario focuses on tax-efficient growth by prioritizing pension contributions up to the £60k annual allowance, then directing excess to your ISA for tax-free growth. You'll capture strong tax relief on contributions while employer matching adds even more value.

    Tax-Efficient Accounts: 97% of your retirement wealth will be in tax-efficient accounts (Pension + ISA).

    This Scenario: Contributions are allocated in this priority order, respecting annual allowance limits and modelling tax efficiency.

    Year-by-Year Projection

    Detailed breakdown of your wealth accumulation

    Save to Your Financial Plan

    Your saved details will pre-fill other calculators automatically so you do not have to re-key information and can access your saved calculations at any time.

    Method & Assumptions

    What's Next?

    Retirement Savings Hub

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    Explore all accumulation tools and guides in one place

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    Compare tax outcomes between ISA and pension contributions

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    MR

    About the author

    Melanie Reed is a fintech and product specialist with 13+ years' experience building mortgage, investment, savings and retirement tools at companies including Aviva, Lendinvest, Money Advice Trust and Luno. She develops calculators and content that simplify complex UK financial decisions, covering pensions, mortgages, tax-efficiency and long-term savings.

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