What Is a SIPP? A Simple Explanation

SIPP stands for Self-Invested Personal Pension. Strip away the jargon and it's a type of personal pension — separate from any workplace pension — where you choose the specific investments yourself, rather than being placed into a provider's ready-made fund.

How a SIPP differs from a normal personal pension

With a standard personal pension, you typically pick from a shortlist of funds the provider offers. With a SIPP, you generally get access to a much wider range of investments — individual company shares, investment trusts, a broader menu of funds, and sometimes commercial property — and you decide how your money is spread across them. In exchange for that extra control, you take on more responsibility for the decisions.

Who tends to use a SIPP

SIPPs are popular with people who already feel comfortable managing investments — perhaps because they invest outside their pension already — and want the same level of control over their retirement savings. They're also commonly used by self-employed people who don't have access to a workplace pension and want a flexible personal pension instead (our self-employed pension guide covers that whole setup). That said, many providers now offer simplified SIPPs with ready-made portfolios, aimed at people who want the tax benefits of a SIPP without picking individual investments themselves.

The tax treatment is the same as other pensions

It's a common misconception that a SIPP has special tax rules. It doesn't — the same pension tax relief, annual allowance, and minimum access age rules apply as with any other personal pension, including the 25% tax-free lump sum when you come to take money out. The difference is entirely about investment choice and control, not tax treatment.

What you're responsible for

Because you (or an adviser you choose to work with) are making the investment decisions, a SIPP puts more of the responsibility for performance on you. There's no default fund quietly managing things in the background the way there often is with a workplace pension. If you don't want to actively manage investments yourself, a SIPP with a ready-made portfolio, or simply a standard personal or workplace pension, may suit you better.

Fees can work differently

SIPP providers often charge in a few different ways — a platform fee, fees on individual fund holdings, and sometimes dealing charges if you buy and sell investments like shares. These can add up differently depending on how actively you trade and how much you hold, so it's worth comparing the actual fee structure against a standard personal pension rather than assuming a SIPP is automatically more expensive or cheaper.

Transferring into a SIPP

It's possible to transfer other pensions — old workplace pensions, for instance — into a SIPP to consolidate them in one place; our guide to combining pension pots walks through when that helps and when it backfires. Before transferring, especially from a defined benefit ("final salary") scheme, it's worth being cautious: those schemes often come with valuable guarantees that a SIPP cannot replicate, and transferring away from one is a decision most people should only make with regulated financial advice.

This is general information, not personalised financial advice. Rules and allowances change, and your right decision depends on your own circumstances — for anything that affects your money long-term, it is worth checking the current figures on GOV.UK or speaking to a regulated financial adviser (MoneyHelper offers free, impartial guidance).