SIPPs Explained, and How They Compare With a Workplace Pension

By Sam Parkinson · Last updated: August 2026 · 10 min read

A SIPP, or self-invested personal pension, is a pension you open and run yourself. It gets exactly the same tax relief as a workplace pension. The difference is who is in charge: instead of your employer's scheme choosing a default fund for you, you pick the investments, the platform and the pace. People often frame SIPP against workplace pension as a straight contest. The sensible answer for most is an order of priority, and it starts with never turning down the employer contribution.

How a SIPP works

You open a SIPP with an investment platform, pay money in, and choose what to invest it in. The provider claims 20% basic-rate tax relief from HMRC and adds it to your pot automatically, so £80 in becomes £100 invested. Higher and additional-rate taxpayers can claim more through Self Assessment, as we cover in our tax relief guide.

Inside the wrapper your investments grow free of UK income tax and capital gains tax. The trade-off is the same as every pension: the money is locked away until the normal minimum pension age, currently 55 and rising to 57 from 6 April 2028. From that point you can usually take 25% tax-free and draw the rest as taxable income.

What you can invest in

This is where SIPPs earn the "self-invested" name. A typical platform SIPP offers funds, index trackers, ETFs, investment trusts and individual shares. Full SIPPs from specialist providers go further, allowing things like commercial property, which is how some business owners hold their premises. Most people need none of that. A single global tracker fund inside a low-cost SIPP is a perfectly respectable strategy, and often a better one than a complicated portfolio nobody keeps on top of.

Workplace pension or SIPP: the comparison that matters

A workplace pension is the scheme your employer enrols you into automatically. Under auto-enrolment rules, a minimum of 8% of your qualifying earnings, the band between £6,240 and £50,270 in 2026/27, must go in, made up of at least 3% from your employer with the rest from you including tax relief (source: GOV.UK, workplace pensions). Your money lands in a default investment fund unless you choose otherwise.

	Workplace pension	SIPP
Employer money	Yes, 3% minimum, often more	No
Tax relief	Yes	Yes
Charges	Default fund capped at 0.75% a year	Varies by platform; can be cheaper or dearer
Investment choice	Limited fund list	Very wide
Effort required	None, it runs itself	You pick and manage investments
Salary sacrifice possible	Often	No

Rule one: bank the employer money first

The employer contribution is the single best return available in pensions. Pay in enough to get every pound of match your employer offers before a SIPP even enters the conversation. If your employer matches beyond the 3% minimum, take all of it. Nothing a SIPP offers beats free employer money.

If your scheme offers salary sacrifice, that tips things further towards the workplace pension, because sacrifice saves National Insurance and SIPP contributions cannot.

When a SIPP earns its place

• You have maxed the match. Contributions beyond what your employer will match are a fair fight between your scheme and a SIPP, and the SIPP may win on cost or choice.
• You have old pensions scattered about. A SIPP is a common home for combining old pots, putting everything where you can see it.
• You want investments your scheme does not offer. Workplace default funds are deliberately middle of the road. If you have the interest and the patience, a SIPP lets you build something more deliberate.
• You are self-employed. No employer, no workplace scheme, so a SIPP or a personal pension is the standard route. Our self-employed pension calculator shows what regular contributions could become.

What a SIPP costs, and watching charges in both directions

Two layers of charges matter: the platform fee and the cost of the investments you hold. Platform fees come in two shapes, a percentage of your pot or a flat monthly fee. As a rule of thumb, percentage fees favour smaller pots and flat fees favour larger ones, so compare using your own numbers. The funds themselves then charge their own annual fee, with simple index trackers at the cheap end.

Who should think twice

If you are employed and not yet contributing enough to get your full employer match, a SIPP is the wrong first move, because no SIPP feature beats free employer money. And if you would rather never think about investments, a workplace default fund does the job without homework. A SIPP rewards a little engagement, and while it is no riskier than any pension if left alone, you lose the point of having one.

SIPP or personal pension?

You will also see ordinary personal pensions and "stakeholder" pensions advertised. These work the same way for tax, but come with a shorter, ready-made investment menu and less to decide. A SIPP is the fuller-choice version. If you want a simple, low-cost home for regular contributions and do not crave a wide fund list, a straightforward personal pension can do the job with less to think about. If you want the widest choice or plan to consolidate several pots, the SIPP is the natural pick.

What happens when you change jobs

Each employer enrols you into their own scheme, which is how people end up with a trail of small pots. Your old workplace pensions keep growing, and keep charging, after you leave; they just stop receiving contributions. A SIPP can act as the permanent home that follows you from job to job, taking in each old pot as you move on. Check for exit fees or valuable guarantees before transferring anything, and read our guide to finding and combining old pensions first.

SIPPs and tax when you take the money

At retirement a SIPP behaves like any other defined contribution pension. You can usually take 25% tax-free (capped at £268,275 across all your pensions), and the rest is taxed as income as you draw it. Most platforms offer flexi-access drawdown, letting you take income directly from the SIPP while the remainder stays invested. Once you take taxable income flexibly, the Money Purchase Annual Allowance cuts what you can pay in from then on to £10,000 a year, which catches out people who dip in early while still working.

Opening one: what to check

• Compare total costs (platform fee plus fund fees) on your pot size, not headline rates.
• Check the provider is FCA-regulated and covered by the Financial Services Compensation Scheme.
• If transferring old pensions in, check for exit fees and valuable guarantees you might lose.
• Set up a regular monthly contribution. Drip-feeding beats waiting for the perfect moment.

Common questions

This article is for general information only and does not constitute financial advice, and nothing here is a recommendation of any particular provider or investment. The value of investments can fall as well as rise. Figures relate to the 2026/27 tax year and are correct as of August 2026. For advice tailored to you, speak to a financial adviser regulated by the Financial Conduct Authority (FCA), or get free guidance from MoneyHelper.