SIPP: Self-Invested Personal Pensions Explained

A SIPP, or self-invested personal pension, is a type of personal pension that gives you full control over how your retirement savings are invested. Like all personal pensions, a SIPP benefits from government tax relief on contributions, tax-free investment growth within the fund, and the option to take 25% of your pot as a tax-free lump sum when you retire.

What sets a SIPP apart from a standard personal pension is the breadth of investment choice. With a standard personal pension, you are typically limited to a range of funds selected by your provider. With a SIPP, you can invest in individual shares listed on major stock exchanges, exchange-traded funds (ETFs), investment trusts, government and corporate bonds, commercial property and a wide variety of funds from different managers.

SIPPs are regulated in the same way as other personal pensions. Your provider must be authorised and your investments are held in trust, separate from the provider's own assets. The annual allowance, tax relief rules and minimum pension age (currently 55, rising to 57 from April 2028) all apply to SIPPs in exactly the same way as they do to any other pension.

SIPPs are most popular with experienced investors who want to make their own investment decisions, though many providers also offer ready-made portfolio options for those who want the flexibility of a SIPP platform without having to pick individual investments.

A SIPP works in the same fundamental way as any personal pension. You contribute money, the government adds tax relief, and your provider holds the investments in a pension wrapper until you reach retirement age. The difference is in the level of control you have over those investments.

1. Open an account with a SIPP provider. You can apply online with most providers. You will need your National Insurance number, a form of ID and your bank details. The application typically takes 10 to 20 minutes.
2. Fund your SIPP. You can contribute via regular monthly payments, one-off lump sums, or by transferring existing pensions into your SIPP. Many investors use a combination of all three. When you transfer an old workplace pension or personal pension into a SIPP, the full value is moved across and any tax relief already applied stays with the pot.
3. Choose your investments. This is where a SIPP differs from other pensions. You can build a portfolio of shares, funds, ETFs, bonds and other assets. Most SIPP platforms provide research tools, fund screening and model portfolios to help you make decisions.
4. Monitor and adjust. Unlike a workplace pension where the default fund runs on autopilot, a SIPP requires some ongoing engagement. You can buy and sell investments, rebalance your portfolio and adjust your contribution levels at any time.
5. Access your pension from age 55 (57 from 2028). When you reach the minimum pension age, you can take up to 25% of your pot as a tax-free lump sum and draw the rest as income through pension drawdown, purchase an annuity, or a combination of both.

Choosing between a SIPP, a workplace pension and a standard personal pension depends on your employment status, how much investment control you want and whether you receive employer contributions.

If you are employed and your employer offers a workplace pension with matching contributions, you should almost always take advantage of this first. Employer contributions are effectively free money, and walking away from them to invest in a SIPP instead would mean leaving that benefit on the table.

However, a SIPP can work well alongside a workplace pension. Once you have secured your employer's full matching contribution, you might choose to direct any additional savings into a SIPP where you have greater investment freedom. This is a common strategy among people who want more control over part of their retirement savings.

For self-employed workers who have no access to employer contributions, the choice is between a standard personal pension and a SIPP. If you are comfortable selecting your own investments and want access to individual shares and a broad fund range, a SIPP is worth considering. If you prefer a simpler, hands-off approach, a standard personal pension with a well-designed default fund may be more appropriate.

SIPPs receive exactly the same tax relief as every other type of personal pension. There is no additional tax advantage to choosing a SIPP over a standard personal pension or workplace pension. The benefit of a SIPP is investment choice, not extra tax relief.

When you contribute to a SIPP, your provider claims basic-rate tax relief (20%) from HMRC automatically through the relief at source system. This means you pay £800 and the provider claims £200, giving your SIPP a gross contribution of £1,000. If you pay income tax at 40% or 45%, you claim the additional relief through your Self Assessment tax return.

The annual allowance for the 2026/27 tax year is £60,000. You can contribute up to this amount, or 100% of your UK earnings if lower, and receive full tax relief. The carry forward rule lets you use any unused allowance from the previous three tax years, provided you were a member of a registered pension scheme in those years.

High earners with adjusted income above £260,000 face a tapered annual allowance that reduces the £60,000 limit, potentially down to a minimum of £10,000. If you have already accessed your pension flexibly (for example, through drawdown), your annual allowance for further contributions drops to the money purchase annual allowance (MPAA) of £10,000.

For a full explanation of relief rates and how to claim, read our guide to pension tax relief. For guidance on how much to contribute, see our pension contributions guide.

One of the main reasons people choose a SIPP over a standard personal pension is the breadth of investments available. While a standard personal pension typically offers a curated range of funds from one or a few fund managers, a SIPP opens up a much wider universe of options.

Most SIPP providers offer access to the following investment types:

• Funds (unit trusts and OEICs). Actively managed and index-tracking funds covering UK, global, emerging market, bond and multi-asset strategies. This is the most common investment type held in SIPPs.
• Exchange-traded funds (ETFs). Low-cost, passively managed funds that trade on stock exchanges like shares. ETFs are popular with cost-conscious investors building diversified portfolios.
• Individual shares. UK-listed shares, plus shares on major international exchanges including the US, Europe and Asia Pacific. Holding individual shares requires more knowledge and carries higher risk than diversified funds.
• Investment trusts. Closed-ended funds listed on the stock exchange. Investment trusts can borrow to invest (known as gearing) and sometimes trade at a discount or premium to their underlying asset value.
• Government and corporate bonds. Fixed-income securities that pay regular interest. Bonds are typically used to reduce portfolio risk, particularly as you approach retirement.
• Commercial property. Some SIPPs, particularly those aimed at business owners, allow direct investment in commercial property such as offices, warehouses or retail premises. This is a specialist area with higher minimum investment levels and less liquidity.

Investments not permitted in a SIPP include residential property, most collectibles (wine, art, classic cars), and any asset that HMRC classifies as "taxable property." Investing in these through a SIPP would trigger tax charges that remove any benefit.

Understanding SIPP charges is essential because even small percentage differences compound into significant sums over decades of saving. SIPP fees typically have several components, and comparing providers requires looking at all of them together.

The distinction between percentage-based and flat-fee platforms matters considerably. Percentage-based platforms charge a percentage of your total pot value each year. This works out cheaper for smaller pots but becomes expensive as your pension grows. Flat-fee platforms charge a fixed annual amount regardless of pot size, making them better value for larger pots.

As a rough guide, if your SIPP pot is below £50,000, a percentage-based platform is likely cheaper. Above £100,000, a flat-fee platform usually saves you money. Between £50,000 and £100,000, the answer depends on the specific providers you are comparing.

Fund charges sit on top of the platform fee. Index-tracking funds typically charge 0.05% to 0.25% per year, while actively managed funds charge 0.5% to 1.5%. Over a 30-year saving period, the difference between a 0.1% tracker and a 1% actively managed fund, on the same investment returns, can amount to tens of thousands of pounds in lost growth.

A SIPP is a powerful tool, but it is not the best choice for everyone. Before opening one, consider whether you genuinely need the extra investment freedom it provides, or whether a simpler pension structure would serve you just as well.

Advantages of a SIPP

• Investment choice. Access to thousands of funds, shares, ETFs, bonds and other assets, giving you full control over your portfolio.
• Consolidation. A SIPP is an effective home for consolidating multiple old workplace and personal pensions into a single, manageable account.
• Flexibility. You can adjust contributions, switch investments and access your pension through drawdown, all from one platform.
• Transparency. Most SIPP platforms show your holdings, performance and charges clearly, making it easy to track how your pension is performing.
• Cost management. The same tax relief, tax-free growth and 25% tax-free lump sum as any other pension, with the added ability to choose low-fee index funds to manage costs.

Disadvantages of a SIPP

• Complexity. Choosing and managing your own investments requires time, knowledge and discipline. If you pick poorly or fail to diversify, your pension could underperform.
• No employer contributions. Unless your employer specifically agrees to contribute to your SIPP, you will miss out on the employer match available through a workplace pension.
• Costs can add up. Dealing charges, platform fees and fund costs can accumulate, particularly if you trade frequently or hold a large number of individual shares.
• Investment risk. Greater investment freedom means greater potential for loss. With a workplace pension's default fund, a professional fund manager handles the asset allocation. With a SIPP, that responsibility is yours.

A SIPP tends to suit people who are comfortable making investment decisions, have a pension pot large enough to justify the platform fees, and want more control than a standard personal pension offers. If you are unsure whether a SIPP is appropriate for your circumstances, speaking to a qualified financial adviser can help you weigh the options.