A Self-Invested Personal Pension (SIPP) gives you full control over where your retirement money is invested. Unlike a typical workplace pension where the provider picks the funds, a SIPP lets you choose from thousands of investments — shares, funds, bonds, ETFs, and more. This guide covers everything UK residents need to know about SIPPs, from tax relief to drawdown.
What Is a SIPP?
A SIPP is a personal pension wrapper that lets you choose and manage your own investments. It works like any other pension — you contribute money, get tax relief, and the fund grows tax-free until you draw it down in retirement.
The key difference from a standard personal pension is investment flexibility. A standard pension might offer 10–20 funds. A SIPP can give you access to:
- UK and international stocks
- Investment trusts and ETFs
- Government and corporate bonds
- Commercial property
- Collectives and OEICs
This makes SIPPs particularly attractive for hands-on investors who want to build their own portfolio rather than rely on a default fund.
SIPP vs Workplace Pension
| Feature | SIPP | Workplace Pension |
|---|---|---|
| Investment choice | Full control | Limited fund list |
| Fees | Varies by provider | Often subsidised by employer |
| Employer contribution | No (unless employer pays into SIPP) | Usually yes |
| Tax relief | Same | Same |
| Administration | You manage | Provider manages |
Important: If your employer matches contributions into a workplace pension, you should usually maximise that first. Free money beats investment flexibility.
Tax Relief on SIPP Contributions
The government rewards you for saving into a pension through tax relief. It effectively refunds the income tax you already paid on that money.
Basic Rate Taxpayers
For every £100 you pay into your SIPP, the government adds £25 in basic rate tax relief, making it £125. You pay £80 net, and your provider claims £20 from HMRC to top it up.
Higher Rate Taxpayers
If you pay 40% income tax, you get an additional 20% relief through your Self Assessment tax return. So for every £100 that ends up in your pension, you only need to contribute £60 — the government adds £40 in total.
Additional Rate Taxpayers
If you pay 45% income tax, you can claim back an extra 5% through Self Assessment, giving you £45 in total relief per £100.
How Tax Relief Works in Practice
| Your tax rate | You pay (net) | Government adds | Total in pension |
|---|---|---|---|
| Basic (20%) | £80 | £25 | £105 |
| Higher (40%) | £60 | £40 | £100 |
| Additional (45%) | £55 | £45 | £100 |
Note: Since 2025, the effective tax relief for basic rate taxpayers is 25%, meaning £100 in your pension costs you £80. For higher rate taxpayers, the calculation remains generous — you effectively get £1.67 for every £1 you contribute after tax.
Annual Allowance
The annual allowance is the maximum you can contribute to all your pensions in a tax year and still receive tax relief.
- Standard allowance: £60,000 per year
- Alternative: 100% of your UK earnings (whichever is lower)
- Tapered allowance: If your income exceeds £260,000, the allowance reduces by £1 for every £2 over the threshold, down to a minimum of £10,000
Carry Forward
Unused annual allowance from the previous three tax years can be carried forward. This means if you missed contributions in earlier years, you can make a larger contribution now without penalty.
Example: If you had £20,000 unused in each of the last three years, you could contribute up to £120,000 this year (£60,000 current year + £60,000 carried forward).
Lifetime Allowance
The Lifetime Allowance was abolished on 6 April 2024. There is no longer any limit on the total size your pension pot can reach without facing an extra tax charge.
Previously, pension savings above the Lifetime Allowance were taxed at 25% (if drawn as income) or 55% (if taken as a lump sum). This no longer applies.
However, a new Lump Sum Allowance of £268,275 applies to the total tax-free lump sums you can take across all your pensions during your lifetime.
Investment Choices Inside a SIPP
A SIPP’s main appeal is the breadth of investments available:
Funds
- Index trackers — Low-cost funds that follow an index like the FTSE 100 or MSCI World. Typically 0.1–0.5% annual charge.
- Actively managed funds — Fund managers pick stocks to try to beat the market. Typically 0.5–1.5% annual charge.
- Mixed/balanced funds — Combine stocks and bonds in a single fund. Good for hands-off investors.
ETFs (Exchange-Traded Funds)
Listed on the stock exchange like shares. Can track indices, sectors, or commodities. Very low cost (often 0.1–0.3%). Easy to buy and sell throughout the trading day.
Investment Trusts
UK-listed companies that invest in other companies. They can trade at a discount or premium to their net asset value. Many have long track records of dividend growth.
Bonds
- Government bonds (gilts) — Very low risk, low return.
- Corporate bonds — Loans to companies. Higher yield than gilts, moderate risk.
Individual Stocks
Buy shares in specific UK or international companies. Higher risk but potentially higher reward. Requires research and monitoring.
Commercial Property
Some SIPPs allow you to invest in commercial property (offices, shops, warehouses). The rent is paid back into your pension tax-free.
SIPP Providers
Not all SIPPs are the same. Costs and features vary significantly. Here are the main options:
Vanguard Personal Pension
- Annual fee: 0.15% (capped at £375/year)
- Investment range: Vanguard funds only
- Best for: Cost-conscious investors who are happy with Vanguard’s fund range
AJ Bell YouInvest
- Annual fee: 0.25% (no cap, reduces at higher balances)
- Investment range: UK and international shares, funds, ETFs, investment trusts
- Best for: Investors wanting broad choice at a reasonable cost
Hargreaves Lansdown
- Annual fee: 0.45% (capped at £200/year for shares, no cap for funds)
- Investment range: Wide range including HL Select funds
- Best for: Beginners who value excellent customer service and research tools
Interactive Investor
- Monthly fee: £11.99/month (flat fee, not percentage)
- Investment range: Full range of UK and international investments
- Best for: Larger portfolios where flat fees become cheaper than percentage-based fees
Fee Comparison: £100,000 Portfolio
| Provider | Annual Fee | Monthly Equivalent |
|---|---|---|
| Vanguard | £150 (capped) | £12.50 |
| AJ Bell | £250 | £20.83 |
| Hargreaves Lansdown | £450 | £37.50 |
| Interactive Investor | £143.88 | £11.99 |
For portfolios above £80,000, Interactive Investor’s flat fee becomes the cheapest option.
Drawdown: Accessing Your Money
From age 55 (rising to 57 from 6 April 2028), you can access your SIPP through flexi-access drawdown.
Tax-Free Lump Sum
You can take up to 25% of your pension pot tax-free, subject to the Lump Sum Allowance of £268,275. This is the maximum you can take tax-free across all your pensions.
Flexi-Access Drawdown
After taking your tax-free lump sum, the remainder stays invested and you draw income as needed. Any income drawn is taxed at your marginal income tax rate.
Example:
- Pension pot: £500,000
- Tax-free lump sum: £125,000 (25%)
- Remaining in drawdown: £375,000
- If you withdraw £20,000/year, you pay income tax on that amount
Uncrystallised Funds Pension Lump Sum (UFPLS)
You can take ad-hoc lump sums without setting up drawdown. Each payment is 75% taxable and 25% tax-free. This is useful if you want flexibility without committing to regular income.
Death Benefits
One of the key advantages of a SIPP is how it passes to your beneficiaries.
If You Die Before 75
- The entire pension passes to your nominated beneficiaries tax-free
- No income tax, no inheritance tax
- Beneficiaries can take it as a lump sum or drawdown
If You Die After 75
- Any payments to beneficiaries are taxed at their marginal income tax rate
- Still no inheritance tax on the pension
- Beneficiaries have 10 years to draw down the funds
Tip: Nominate beneficiaries on your SIPP provider’s forms. Without a nomination, the provider decides who receives the benefits, which may not match your wishes.
Worked Example: Starting a SIPP at 30
Let’s see how a SIPP can grow over 30 years.
Assumptions
- Age: 30
- Monthly contribution: £500
- Tax relief (basic rate): 25% effective, so £500 costs £400 net
- Annual investment return: 7% (after fees)
- Retirement age: 60
Growth Over Time
| Age | Contributions | Tax Relief | Total Paid In | Fund Value |
|---|---|---|---|---|
| 30 | £6,000 | £1,500 | £7,500 | £7,500 |
| 35 | £30,000 | £7,500 | £37,500 | £53,200 |
| 40 | £60,000 | £15,000 | £75,000 | £135,400 |
| 45 | £90,000 | £22,500 | £112,500 | £273,800 |
| 50 | £120,000 | £30,000 | £150,000 | £492,600 |
| 55 | £150,000 | £37,500 | £187,500 | £835,900 |
| 60 | £180,000 | £45,000 | £225,000 | £1,351,800 |
At Age 60
- Total contributions + tax relief: £225,000
- Fund value: £1,351,800
- Tax-free lump sum (25%): £337,950
- Remaining in drawdown: £1,013,850
If you draw £30,000/year from the remainder, that’s £2,367/month after income tax — a comfortable income on top of the State Pension.
Tips for SIPP Success
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Start early — The power of compound growth means every year you delay costs you significantly. Starting at 25 vs 35 can mean double the fund at retirement.
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Claim all your tax relief — Higher rate taxpayers must claim through Self Assessment. Many people forget this, leaving thousands unclaimed.
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Use your full annual allowance — If you can afford it, contribute up to £60,000 per year. Carry forward unused allowances from previous years.
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Invest for growth in early years — With decades until retirement, a higher allocation to equities (70–90%) historically delivers better returns than bonds or cash.
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Keep fees low — Even a 1% difference in annual fees can cost tens of thousands over 30 years. Choose low-cost index funds if you don’t need active management.
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Consider a SIPP if self-employed — You don’t get employer pension contributions, but you still get tax relief. A SIPP is one of the most tax-efficient ways to save.
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Don’t neglect your workplace pension — Always maximise employer matching first. Only use a SIPP for additional contributions beyond that.
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Rebalance periodically — Review your asset allocation annually and rebalance if it has drifted significantly from your target.
Common SIPP Mistakes
- Over-contributing — Exceeding the annual allowance results in a 40% tax charge on excess contributions.
- Ignoring the Money Purchase Annual Allowance (MPAA) — If you’ve already flexibly accessed a defined contribution pension, your annual allowance drops to £10,000.
- Forgetting to nominate beneficiaries — Without a nomination, the provider decides who gets your pension.
- Leaving money in cash — Cash inside a SIPP earns nothing and loses value to inflation. Invest it.