UK SIPP Calculator 2026 — Self-Invested Personal Pension With HMRC Tax Relief
Free UK SIPP calculator for 2026. Calculate Self-Invested Personal Pension growth with HMRC tax relief (20%, 40%, 45%), employer contributions, compound investment returns and retirement projections. Updated for England, Wales, Scotland and Northern Ireland.
Personal Details
Pension Contributions
Investment Assumptions
✓ Last updated: March 2026 | Built with CRA-official rates, Bank of Canada data, and OSFI guidelines
How to Use This Calculator
Provide your current age and when you plan to retire.
Enter your existing pension pot and monthly contributions.
Select expected return and your income tax band.
See estimated pension value, tax relief and lump sum.
Understanding Your Results
Key Tips
- ✓Higher-rate taxpayers can claim extra relief via Self Assessment.
- ✓Employer contributions also count towards annual allowance.
- ✓Starting early greatly boosts compound growth.
- ✓Investment returns are not guaranteed.
Frequently Asked Questions
Clear answers to common questions to help you use this calculator confidently.
What is the SIPP Calculator UK and how does it work?
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What is the SIPP Calculator UK and how does it work?
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The SIPP Calculator UK helps estimate how a Self-Invested Personal Pension (SIPP) may grow over time based on contributions, investment growth assumptions, and years until retirement. It shows projections in GBP (£) so you can plan in a UK context. Results are indicative estimates only and not financial, legal, or tax advice.
Is this SIPP Calculator UK suitable for UK retirement planning?
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Is this SIPP Calculator UK suitable for UK retirement planning?
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Yes, the SIPP Calculator UK is suitable for UK residents planning retirement using a SIPP alongside workplace pensions. It helps you compare how contribution changes may impact your future pension pot. Actual outcomes depend on market performance, fees, and pension rules.
How accurate is this SIPP calculator UK 2026?
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How accurate is this SIPP calculator UK 2026?
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This SIPP calculator UK 2026 is accurate for projection maths based on your inputs and assumptions. Real SIPP returns are not guaranteed and may differ due to volatility, platform charges, and investment choices. Use this for scenario planning and update it yearly.
SIPP calculator UK: how much should I contribute monthly?
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SIPP calculator UK: how much should I contribute monthly?
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Your ideal monthly SIPP contribution depends on your retirement target, timeline, and expected investment returns. Start by running low, base, and high scenarios so you can see the range of possible pension outcomes. The SIPP Calculator UK helps you choose a sustainable amount rather than an unrealistic number.
What growth rate should I use in a UK SIPP calculator?
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What growth rate should I use in a UK SIPP calculator?
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There is no single correct rate because SIPPs can be invested in different funds, and returns can vary widely. A good approach is testing conservative, moderate, and optimistic rates to avoid overconfidence. The SIPP Calculator UK helps you see how assumptions change the outcome.
Does SIPP planning differ across the UK (England, Scotland, Wales, Northern Ireland)?
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Does SIPP planning differ across the UK (England, Scotland, Wales, Northern Ireland)?
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SIPP growth calculations are the same across the UK, but retirement spending needs can differ depending on housing and living costs. Some regions may require a smaller retirement budget than higher-cost areas. The SIPP Calculator UK focuses on accumulation in GBP (£), not location-based spending.
SIPP planning in London vs Manchester: do I need a bigger pension pot in London?
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SIPP planning in London vs Manchester: do I need a bigger pension pot in London?
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Often yes, because housing and lifestyle costs may be higher in London. Even small differences in monthly spending can require a much larger pension pot over retirement. The SIPP Calculator UK helps you grow the pot; your target should reflect where you plan to live.
What are the most common UK SIPP mistakes people make?
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What are the most common UK SIPP mistakes people make?
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A common mistake is choosing investments without understanding risk, fees, and long-term volatility. Another mistake is ignoring inflation, which can shrink future buying power. The SIPP Calculator UK helps reveal the time advantage of consistent contributions, but investment choices still matter.
Is it true that SIPPs are always better than workplace pensions?
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Is it true that SIPPs are always better than workplace pensions?
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No, workplace pensions often include employer contributions, which can be a major advantage. SIPPs may offer more control and investment choice, but they also require more responsibility and fee awareness. The SIPP Calculator UK helps compare outcomes, but choosing a pension type depends on your situation.
How should I interpret results from the SIPP Calculator UK?
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How should I interpret results from the SIPP Calculator UK?
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Treat the projected pension pot as a planning estimate, not a guaranteed retirement amount. Use low, base, and high return scenarios to understand risk and uncertainty. If the projection looks short, increase contributions, extend the timeline, or adjust retirement spending expectations.
What are the limitations of this SIPP Calculator UK?
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What are the limitations of this SIPP Calculator UK?
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This calculator may not fully account for tax relief rules, annual allowance limits, platform fees, fund charges, or withdrawal taxation unless you model them separately. It also cannot predict policy changes or market performance. Results are indicative planning estimates only.
How does FCA-style consumer guidance relate to SIPPs in the UK?
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How does FCA-style consumer guidance relate to SIPPs in the UK?
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UK consumer guidance generally encourages understanding pension risks, fees, and suitability before investing. The SIPP Calculator UK supports better decisions by making assumptions visible and comparable. This is not official FCA advice and should not replace regulated financial guidance.
How do Bank of England interest rates affect SIPPs in the UK?
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How do Bank of England interest rates affect SIPPs in the UK?
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Interest rates can influence markets, bond values, and sometimes annuity rates at retirement. This calculator does not predict rate changes, but it helps you stress-test growth assumptions. Reviewing your SIPP plan yearly helps keep projections realistic.
Can NRIs or expats use the SIPP Calculator UK?
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Can NRIs or expats use the SIPP Calculator UK?
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Yes, NRIs and expats living in the UK can use the SIPP Calculator UK to project retirement savings in GBP (£). Cross-border residency and tax rules may affect contributions and withdrawals. Results are indicative estimates and should be validated for your individual circumstances.
How should overseas earners handle remittance and GBP exchange rate risk with a UK SIPP?
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How should overseas earners handle remittance and GBP exchange rate risk with a UK SIPP?
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If you earn abroad or plan retirement outside the UK, GBP exchange rate volatility can impact the real value of your SIPP pot. This calculator helps you plan in GBP first, which is how SIPP values are tracked. Consider an FX buffer, transfer fees, and long-term currency risk.
Are there edge cases where a SIPP plan needs extra caution?
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Are there edge cases where a SIPP plan needs extra caution?
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Yes, irregular income, self-employment gaps, late starts, and high-risk portfolios can create larger outcome uncertainty. Fees and frequent switching can quietly reduce long-term returns. The SIPP Calculator UK helps stress-test these situations before you commit to targets.
Do I really need to review my SIPP every year?
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Do I really need to review my SIPP every year?
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Yes, because investment returns, fees, and contribution levels change over time. A yearly review helps you rebalance risk and keep retirement targets realistic. The SIPP Calculator UK is ideal for quick annual check-ups.
SIPP planner UK: what should I do after calculating my SIPP projection?
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SIPP planner UK: what should I do after calculating my SIPP projection?
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Increase contributions gradually, especially after pay rises, and keep fees low where possible. If projections fall short, consider extending retirement age, increasing contributions, or adjusting risk (carefully). For high-stakes decisions, consider speaking with a regulated UK financial adviser.
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