SIPP Explained: What Is a Self-Invested Personal Pension? (2026 Guide)

A Self-Invested Personal Pension (SIPP) is a UK, HMRC-registered personal pension that lets you choose and manage your own investments — shares, funds, ETFs, bonds, and more — inside a tax-efficient wrapper. It offers far more control than a typical workplace pension, but that control comes with more responsibility for costs, investment choice, and risk.

This guide covers how a SIPP works, what it costs, how tax relief and contribution limits work in 2026/27, and an important rule change coming in April 2027 that will affect how SIPPs are taxed on death.

Key takeaways

• A SIPP is a defined contribution pension: what you get out depends on what you (and possibly your employer) put in, plus investment performance and charges — there's no guaranteed income.

• Contributions get tax relief at your marginal income tax rate, up to 100% of your UK earnings or £3,600 gross if you have little or no income, subject to the £60,000 annual allowance (2026/27).

• You can normally access a SIPP from age 55, rising to 57 from 6 April 2028, with the first 25% usually tax-free.

• From 6 April 2027, most unused pension funds — including SIPPs — will count toward your estate for inheritance tax for the first time. This is a major change from the current rules.

• SIPP providers are FCA-regulated, but FSCS protection for investment/SIPP-operator failure is capped at £85,000 per person, per firm — lower than the £120,000 now covering bank deposits.

How does a SIPP work?

1. Open a SIPP with an FCA-authorised provider. Options range from low-cost online platforms to specialist "full" SIPP operators that support complex assets like commercial property.

2. Contribute a lump sum or regular payments. Your provider typically claims basic-rate tax relief from HMRC and adds it to your pot automatically.

3. Choose your investments from the range the provider offers — shares, funds, ETFs, trusts, bonds, or cash.

4. Manage and rebalance your portfolio over time. Unlike a workplace default fund, nothing happens automatically — you (or an adviser you appoint) make the decisions.

5. Access your benefits from the normal minimum pension age (55, rising to 57 in 2028) through tax-free cash, flexible drawdown, or an annuity.

Everything happens within HMRC's rules for registered pension schemes, so the tax advantages depend on staying within your allowances and keeping the SIPP correctly registered.

What can you invest in through a SIPP?

Exact ranges vary by provider, but most SIPPs give access to:

What can't you hold in a SIPP?

HMRC blocks certain assets that could be used for personal benefit or that sit outside qualifying investment rules. Holding a non-permitted asset can trigger tax penalties.

"Full" SIPP vs low-cost SIPP

Not all SIPPs are the same. Low-cost/personal SIPPs, offered by most online investment platforms, cover shares, funds, and ETFs and suit the majority of savers. Full SIPPs, run by specialist operators, support more complex holdings such as commercial property or unlisted shares — but usually carry higher setup and administration fees, so they're mainly used by business owners and high-net-worth investors.

SIPP tax relief: how it works

Tax relief is the government's incentive for saving into a pension. It works in up to two stages:

• Basic-rate relief (20%): Your provider automatically reclaims this from HMRC and adds it to your pension. Pay in £8,000, and the government adds £2,000, for a £10,000 gross contribution.

• Higher and additional-rate relief: If you pay tax at 40% or 45%, you claim the extra relief yourself through Self Assessment. This reduces your tax bill rather than topping up the pension directly, but the net effect is the same.

Example: Emily, a higher-rate taxpayer, pays £8,000 into her SIPP. Basic-rate relief brings this up to £10,000, and she claims a further £2,000 through her tax return — so a £10,000 pension contribution effectively costs her £6,000.

You can't claim more tax relief than you've paid in income tax in a given tax year, and contributions above the annual allowance can trigger a tax charge.

SIPP contribution limits and allowances (2026/27)

• Annual allowance: £60,000 across all your pensions combined (personal, employer, and third-party contributions), or 100% of your UK earnings if lower.

• Non-earners: You can still contribute up to £3,600 gross (£2,880 net) a year and receive basic-rate relief, even with no earned income.

• Tapered annual allowance for high earners: If your "adjusted income" exceeds £260,000, your annual allowance reduces by £1 for every £2 over that threshold, down to a minimum of £10,000 once adjusted income reaches £360,000.

• Carry forward: You can use unused annual allowance from the previous three tax years, provided you were a member of a registered pension scheme in those years — useful for a larger one-off contribution.

• Money purchase annual allowance (MPAA): Once you flexibly access taxable pension income (for example, via drawdown), your allowance for further defined contribution savings drops to £10,000 a year. This can't be reversed.

• Employer contributions count toward the £60,000 annual allowance but not toward your personal earnings limit.

SIPP costs and charges

SIPPs aren't free, and charges compound over decades, so it's worth comparing providers on the full fee schedule rather than headline rates alone.

A SIPP with a 0.30% platform fee plus 0.20% average fund costs works out at roughly 0.50% a year — about £500 annually on a £100,000 pot. Small differences in ongoing charges make a meaningful difference to your pot over a working lifetime.

Advantages of a SIPP

• Investment flexibility across a much wider range of assets than most workplace schemes offer.

• Full control and transparency over where your money sits and when it changes.

• Consolidation of multiple old workplace or personal pensions into one account.

• Tax-efficient growth: contributions attract relief, investment growth is free of UK income and capital gains tax, and part of your withdrawal is usually tax-free.

Disadvantages and risks of a SIPP

• Investment risk — the value can fall as well as rise, and there's no guaranteed return.

• Complexity — building and rebalancing a diversified portfolio takes time and knowledge; it can overwhelm beginners.

• Variable costs — fees for specialist assets, frequent trading, or drawdown can erode returns if you don't shop around.

• No automatic employer contribution — most workplace pensions include employer money, which a standalone SIPP doesn't replicate unless your employer specifically agrees to pay in.

• Regulatory change — tax relief, allowances, and pension rules can and do change (see the 2027 inheritance tax update below).

• Scam exposure — the FCA has repeatedly warned that SIPPs have been used to market unregulated or high-risk investments; be wary of unsolicited offers and guaranteed-return promises.

A SIPP rewards engagement and knowledge, but it can punish neglect — it's not a good fit if you'd rather not think about your investments at all.

SIPP vs workplace pension

For most employees, the practical approach is to contribute enough to the workplace pension to get the full employer match first — that's the closest thing to free money in personal finance — then consider a SIPP for additional, more flexible savings.

SIPP vs standard personal pension

A "personal pension" is the broader category that includes SIPPs, stakeholder pensions, and simpler personal pensions.

If you're happy with a managed fund choice and low day-to-day involvement, a stakeholder or standard personal pension may suit you better than a SIPP.

Are SIPPs safe?

Safety depends on two separate things: the provider's regulation, and the investments you choose.

• Regulation: SIPP providers must be authorised by the Financial Conduct Authority (FCA) and follow conduct-of-business and client-money rules. Client assets must be held separately (ring-fenced) from the provider's own money.

• FSCS protection: If a SIPP operator fails due to fraud, bad advice, or mismanagement, the Financial Services Compensation Scheme (FSCS) can cover eligible claims up to £85,000 per person, per firm. This is different from the deposit protection limit for banks and building societies, which rose to £120,000 from December 2025 — cash and investments held within a SIPP still fall under the lower £85,000 investment-firm limit, not the higher deposit limit.

• Investment risk is not covered: The FSCS does not compensate for poor investment performance or market losses — only for provider failure, fraud, or maladministration.

In short: a SIPP from a reputable, FCA-regulated provider is structurally protected against fraud and insolvency, but it never removes the underlying risk of investing.

Important update: SIPPs and inheritance tax from April 2027

Historically, one of the most attractive features of a SIPP has been that unused pension funds generally sit outside your estate for inheritance tax (IHT) purposes when you die. That is changing.

Following the Autumn Budget 2024 and the Finance Act 2026 (Royal Assent March 2026), from 6 April 2027, most unused pension funds and pension death benefits — including SIPPs — will be brought into the value of your estate for IHT. Where your total estate exceeds the available nil-rate bands, the excess above those thresholds is taxed at 40%.

Key points to know:

• Applies to deaths on or after 6 April 2027. Current rules still apply to deaths before that date.

• Spousal and civil partner transfers remain exempt, as do lump sums paid to a registered charity.

• Death-in-service benefits paid from a registered scheme are excluded.

• Responsibility for reporting and paying any IHT due shifts largely to the deceased's personal representatives, who can direct a pension scheme to withhold up to 50% of the taxable benefit for up to 15 months.

• If you've already fully drawn down or annuitised your pension before death, there's no "unused" fund left to bring into the estate.

This change materially affects long-term estate planning for anyone who has treated a SIPP as a tax-efficient way to pass on wealth. It's worth revisiting your retirement and estate plans with the 2027 date in mind, ideally with a regulated financial adviser, rather than relying on older guidance that assumes pensions are IHT-free.

When can you access a SIPP?

The normal minimum pension age (NMPA) is currently 55, rising to 57 from 6 April 2028, and is expected to stay ten years below the State Pension age after that. From this age, whether or not you're still working, you can:

• Take a tax-free lump sum — usually 25% of your pot, capped by the lump sum allowance of £268,275 (2025/26 figure; this replaced the old lifetime allowance system).

• Enter flexi-access drawdown — leave the rest invested and draw a taxable income as needed.

• Buy an annuity — convert some or all of the remaining fund into a guaranteed income for life.

• Take a small pot as a lump sum — possible for very small pension pots under the small pots rules.

Early access outside these ages is only possible in limited circumstances, such as serious ill health.

How are SIPP withdrawals taxed?

The first 25% of your pot is usually tax-free (subject to the lump sum allowance above). The remaining 75% is taxed as income in the year you take it, added to any other income you have.

Example: David, a basic-rate taxpayer, has a £200,000 SIPP. He takes his £50,000 tax-free lump sum and puts the remaining £150,000 into flexi-access drawdown, withdrawing £20,000 in a tax year. Added to £15,000 of other income, his total income is £35,000. After the £12,570 personal allowance, £22,430 is taxable at 20% — no higher-rate tax is due, because he's stayed within the basic-rate band.

Withdraw too much in one year, though, and you can push yourself into a higher tax bracket unnecessarily. Spreading withdrawals across tax years is one of the simplest ways to manage the tax on drawdown income.

Who might consider a SIPP?

• Experienced investors comfortable picking their own shares, funds, and ETFs.

• Self-employed people with no workplace pension who want maximum flexibility.

• Anyone consolidating several old pensions into one manageable pot.

• Savers with larger pots who want a wider investment universe than their workplace scheme offers.

• Higher and additional-rate taxpayers looking to make full use of tax relief above their workplace pension.

Who might not need one

• Employees with generous employer pension contributions and an adequate default fund.

• Beginners who aren't confident selecting and managing investments.

• Anyone who wants a genuinely hands-off, set-and-forget pension.

• Savers with a very small pot, where fixed platform fees could eat up a disproportionate share of returns.

What about a Junior SIPP?

Parents or guardians can open a Junior SIPP for a child, contributing up to £3,600 gross a year (with basic-rate relief added automatically). The child can't access the money until they reach the normal minimum pension age themselves, but the long investment horizon means even modest, regular contributions have decades to grow.

Getting help: guidance, targeted support, and advice

SIPPs require more engagement than a default workplace fund, and many people feel out of their depth choosing investments alone. From 6 April 2026, the FCA's new "targeted support" regime allows authorised firms to give ready-made suggestions to groups of savers with similar circumstances — a middle ground between generic guidance and full, personalised financial advice — aimed at closing the UK's long-standing pensions "advice gap." If you're unsure whether a SIPP is right for you, ask your provider whether they offer targeted support, use free guidance from MoneyHelper, or speak to a regulated financial adviser for a personalised recommendation, especially given the 2027 inheritance tax changes above.

Common SIPP myths

Myth: SIPPs guarantee higher returns. Fact: A SIPP is just a tax wrapper. Returns depend entirely on the investments inside it — you can lose money in a SIPP just as in any other pension.

Myth: Everyone should have a SIPP. Fact: SIPPs suit people who want investment flexibility and are comfortable making their own decisions. Many savers are better served by a workplace or stakeholder pension.

Myth: Tax relief makes SIPPs risk-free. Fact: Tax relief is a real financial benefit, but it doesn't protect you from market losses.

Myth: All SIPPs cost the same. Fact: Costs vary widely by provider, investment choice, and trading frequency — always compare the full fee schedule.

Myth: SIPPs are now free from inheritance tax, like they always have been. Fact: That protection ends for deaths from 6 April 2027 onward, when most unused pension funds join the taxable estate.

Real-world examples

• Priya, 28, graphic designer: Has a workplace pension and opens a low-cost SIPP for extra contributions, investing £200 a month in a global index ETF that becomes £250 after basic-rate relief.

• Tom, 42, self-employed carpenter: Has no workplace pension, so uses a SIPP as his main retirement vehicle, paying in a lump sum each year and claiming higher-rate relief through Self Assessment.

• Margaret, 55, consolidator: Transfers five old workplace pensions into a single SIPP to simplify her paperwork and diversify into low-cost funds ahead of drawdown.

• David, 60, experienced investor: Holds individual UK and overseas shares directly in his SIPP and actively manages the portfolio himself.

• Rachel, 48, solicitor: Maximises her workplace pension, then uses a SIPP for extra higher-rate tax-efficient saving.

These are illustrative scenarios, not individual advice.

How to choose a SIPP provider

• Check FCA authorisation on the Financial Services Register before opening an account.

• Compare the full cost structure — platform fee, fund charges, trading fees, and any drawdown or exit fees.

• Confirm it supports the investments you actually want, especially if you're interested in commercial property or less mainstream assets.

• Weigh up ease of use — app quality, customer service, and research tools matter if you'll be managing your own portfolio.

• Check transfer terms both in and out, including any exit penalties from your current scheme.

• Consider your need for advice or guidance — some providers now offer targeted support; others are execution-only.

Frequently asked questions

What is a SIPP pension? A SIPP (Self-Invested Personal Pension) is an HMRC-registered personal pension that lets you choose your own investments — shares, funds, ETFs, bonds, and more — while benefiting from tax relief on contributions and tax-free growth inside the wrapper.

Is a SIPP better than a workplace pension? Not automatically. Workplace pensions usually come with employer contributions, which are hard to beat. Many people do both: contribute enough to get the full employer match, then use a SIPP for extra, more flexible saving.

Who can open a SIPP? Most UK residents under 75 can open one, whether employed, self-employed, or not working. Non-earners can still contribute up to £3,600 gross a year and get basic-rate relief.

How much can I put into a SIPP? Up to 100% of your UK earnings, capped by the £60,000 annual allowance for 2026/27 (less for high earners subject to the tapered allowance, or £10,000 if you've triggered the MPAA). Non-earners are limited to £3,600 gross.

Will my SIPP be subject to inheritance tax? Under current rules, most unused SIPP funds sit outside your estate. From 6 April 2027, that changes — most unused pension funds and death benefits will be included in your estate for IHT, except transfers to a spouse, civil partner, or registered charity.

Are SIPPs protected if the provider fails? Yes, up to a point. FCA-regulated providers ring-fence client assets, and the FSCS covers eligible claims for provider failure, fraud, or bad advice up to £85,000 per person, per firm. Investment losses from normal market movements aren't covered.

Can I lose money in a SIPP? Yes. The value of your SIPP depends on the performance of the investments you hold, and there's no capital guarantee, unlike a savings account.

When can I access my SIPP? From the normal minimum pension age — currently 55, rising to 57 from 6 April 2028 — regardless of whether you're still working.

How much of my SIPP can I take tax-free? Usually 25% of your pot, up to the lump sum allowance of £268,275 (2025/26). The rest is taxed as income when you withdraw it.

Can I transfer other pensions into a SIPP? Yes, most defined contribution pensions can be transferred into a SIPP. Check for exit fees and any valuable guarantees you might lose in your existing scheme before transferring.

Is a SIPP suitable for beginners? It can be, but it demands more engagement than a default workplace fund. Beginners should start with simple, diversified investments, use free guidance from MoneyHelper or a provider's targeted support service, and consider regulated financial advice for larger decisions.

What's the difference between a SIPP and a Junior SIPP? A Junior SIPP works the same way but is opened by a parent or guardian on behalf of a child, with contributions capped at £3,600 gross a year and no access until the child reaches minimum pension age.

This article is for general educational purposes and is not financial, tax, or legal advice. Pension rules, tax treatment, and allowances can change, and the suitability of a SIPP depends on your personal circumstances. Figures reflect the 2025/26 and 2026/27 tax years as understood at the time of writing. Verify current details with the Financial Conduct Authority, HM Revenue & Customs, or MoneyHelper, or consult a regulated financial adviser before making pension decisions.