SIPP Guide UK 2026: Best Providers, Contribution Limits and Tax Relief Explained
A Self-Invested Personal Pension lets a UK investor pick their own funds, ETFs and shares while still collecting the government's tax relief top-up. This 2026 guide walks through the £60,000 annual allowance, the four providers most self-directed savers actually shortlist, and how to slot a SIPP alongside your workplace scheme and ISA without leaving free money on the table.
If you have already maxed your £20,000 Stocks and Shares ISA allowance for the 2026/27 tax year, or you want a bigger tax break than an ISA delivers, a SIPP is usually the next stop. A Self-Invested Personal Pension is the UK's most flexible personal pension wrapper. You choose the platform, you choose the funds and ETFs inside it, and HMRC gives you tax relief on every contribution up to the annual allowance.
This guide covers the numbers that actually matter for the 2026/27 tax year, four providers real self-directed investors shortlist, and a five-step decision box for picking one. It skips pension jargon wherever plain language works.
What a SIPP is (and what it is not)
A SIPP is a personal pension you contribute to yourself, on top of any workplace scheme. Money paid in gets a government top-up (tax relief) and grows free of UK income tax and capital gains tax inside the wrapper. You cannot touch it until age 55 (rising to 57 in April 2028), and once you do, the first 25% is normally tax-free up to the Lump Sum Allowance.
Unlike a workplace pension, there is no default fund and no employer match. You pick every holding, from a single all-world tracker to a hand-built portfolio of index funds, ETFs, investment trusts and individual shares. That flexibility is why SIPP assets crossed £600 billion in the UK before 2026.
The 2026/27 numbers you need to know
| Rule | 2026/27 limit | What it means |
|---|---|---|
| Annual allowance | £60,000 gross | Total pension contributions (yours plus employer plus tax relief) that get tax relief in the year. |
| Tapered allowance | Reduces above £260,000 adjusted income | High earners lose £1 of allowance for every £2 over £260,000, floor £10,000. |
| Money Purchase Annual Allowance | £10,000 | Kicks in permanently once you flexibly access a pension. Cuts your annual allowance to £10k. |
| Basic-rate tax relief | 20% added at source | Pay in £80, HMRC adds £20, so £100 lands in the SIPP. |
| Higher-rate relief | Extra 20% via self-assessment | 40% taxpayers reclaim another £20 for every £100 gross. 45% additional-rate reclaim £25. |
| Lump Sum Allowance | £268,275 | Total tax-free cash you can take across all your pensions in a lifetime. |
| Access age | 55, rising to 57 in April 2028 | The earliest you can draw money. Ill-health rules can allow earlier access. |
| Carry-forward | Up to 3 prior years unused allowance | You must have been a member of a UK-registered pension in those years. |
How tax relief actually works
Tax relief is the whole point of a SIPP. Basic-rate relief is automatic: a £80 net contribution becomes £100 gross in the SIPP because HMRC pays in £20. Higher-rate (40%) and additional-rate (45%) taxpayers get the same £20 top-up automatically, then claim the extra 20% or 25% via a self-assessment tax return.
The practical effect for a higher-rate taxpayer is that £100 in the SIPP costs you £60 out of pocket. That is a 66% instant uplift before any market return. No ISA can match that on the way in. The trade-off is that withdrawals in retirement are taxed as income above the 25% tax-free portion.
The four SIPP providers most UK investors shortlist
AJ Bell
- 0.25% platform fee on funds, capped at £10/month for shares and ETFs (£120/year cap)
- £1.50 fund dealing, £5 share/ETF dealing (£3.50 for regular investing)
- Full range: funds, ETFs, shares, ITs, bonds, gilts
- Best if: you hold a mix of funds and ETFs above about £50k
Vanguard UK
- 0.15% platform fee capped at £375/year across all Vanguard accounts
- Zero dealing charges on Vanguard funds and ETFs
- Vanguard funds and ETFs only (no shares, no third-party funds)
- Best if: you want a one-fund LifeStrategy or FTSE Global All Cap portfolio
InvestEngine
- Zero platform fee on the DIY ETF-only SIPP
- Zero dealing charges, zero FX fees on GBP ETFs
- ETFs only (about 700 UCITS ETFs)
- Best if: you build a portfolio purely from UCITS ETFs like VWRP or VUAG
Hargreaves Lansdown
- 0.45% on funds tiered down, £200/year cap on shares and ETFs
- £11.95 share dealing, free fund dealing
- Widest range in the UK plus best-in-class research
- Best if: you value phone support and deep research over the lowest fee
The cost gap between the cheapest and most expensive SIPP on a £200,000 all-ETF portfolio is roughly £900 a year (£0 at InvestEngine vs about £900 gross at HL after caps). Over 20 years that compounds to more than £30,000 of lost growth. Fees compound the same way returns do.
SIPP vs Stocks and Shares ISA vs workplace pension
| Feature | SIPP | Stocks and Shares ISA | Workplace pension |
|---|---|---|---|
| 2026/27 allowance | £60,000 gross | £20,000 | Usually 100% of salary up to £60k combined |
| Tax relief in | Yes (20% + higher-rate top-up) | No (post-tax money) | Yes (usually via salary sacrifice) |
| Tax on growth | None inside wrapper | None | None |
| Tax on withdrawals | 25% tax-free, rest as income | None, ever | 25% tax-free, rest as income |
| Access age | 55 (57 from Apr 2028) | Any age | 55 (57 from Apr 2028) |
| Employer match | No | No | Usually yes, up to a cap |
| Investment choice | You pick everything | You pick everything | Usually a shortlist |
The order most UK investors should fund
FIVE-STEP FUNDING ORDER
- Take the full workplace pension employer match first. It is a 50-100% instant return that a SIPP cannot beat.
- Clear high-interest debt above about 8% APR before opening any investment wrapper.
- Build 3-6 months of emergency cash in a Cash ISA or premium bonds. Not a SIPP, not investments.
- Fill your £20,000 Stocks and Shares ISA if you want tax-free access before 55/57. Great for house deposit above the LISA, career break, or early retirement.
- Route additional long-term money into a SIPP, especially if you are a higher-rate (40%) or additional-rate (45%) taxpayer, to bank the extra tax relief you cannot get in an ISA.
Building the SIPP portfolio itself
A SIPP is a wrapper, not a portfolio. The wrapper decides the tax treatment, the funds decide the returns. Most UK investors do fine with a one-fund or three-fund core built from UCITS-compliant, accumulating ETFs to sidestep unrecoverable US withholding tax.
- One-fund core: VWRP (Vanguard FTSE All-World, accumulating) at 0.22% OCF, or SSAC (iShares MSCI ACWI) at 0.20%.
- Three-fund tilt: 65% VUAG (S&P 500) + 20% VMID (FTSE 250) + 15% VFEG (Emerging Markets), rebalanced yearly.
- Bond sleeve for the last 10 years before retirement: VAGP (Global Aggregate GBP-hedged) or IGLA (Global Gov Bond GBP-hedged).
- Dividend focus (income drawdown): VHYL (FTSE All-World High Div Yield) or ISPY (S&P 500 High Div).
Because a SIPP has decades to run, use accumulating (Acc) ETFs where possible. They reinvest dividends automatically and cut down on paperwork and dealing charges. Once you shift to drawdown, distributing (Dist) share classes make cash flow easier to plan.
Rebalancing a SIPP the sensible way
Because a SIPP holds no cash tax event on rebalancing (all internal), you can rebalance freely without triggering CGT. Most self-directed UK investors use a calendar plus threshold rule: once a year on your birthday or the anniversary of the account, plus any time an asset drifts more than 5 percentage points from its target.
If the whole point of a SIPP for you is a hands-off compounding machine, tools like Wealth Rebalancer can pull your holdings, show drift versus target, and calculate the exact top-up amounts for your next contribution so you rebalance by adding rather than selling.
Frequently asked questions
Can I have more than one SIPP?
Yes. There is no cap on the number of SIPPs you can open. The £60,000 annual allowance applies across all your pensions combined, not per account. Some investors run two SIPPs (for example, a Vanguard SIPP for the core and an InvestEngine SIPP for satellite ETFs) to game platform fee caps.
What happens to my SIPP if I die?
SIPPs sit outside your estate for inheritance tax purposes until 2027 rules change. If you die before 75, beneficiaries can usually take the SIPP tax-free (subject to the Lump Sum and Death Benefit Allowance of £1,073,100). If you die after 75, withdrawals are taxed at the recipient's marginal income tax rate. Nominate beneficiaries via your provider.
Can I transfer an old workplace pension into a SIPP?
Usually yes, if it is a defined contribution (money purchase) pension. Defined benefit (final salary) transfers above £30,000 require regulated advice and are almost never worth it. Most SIPP providers handle the transfer paperwork for free and it typically takes 2-6 weeks.
SIPP or LISA for retirement if I am under 40?
A LISA gives a flat 25% government bonus on up to £4,000 a year. A SIPP gives your marginal rate as relief. If you are a basic-rate taxpayer, a LISA beats a SIPP on the way in (25% vs 20%). If you are a higher or additional-rate taxpayer, the SIPP wins by a wide margin. Both can be run in parallel.
Are SIPP contributions capped at my salary?
Yes. You can only get tax relief on contributions up to 100% of your UK relevant earnings in the tax year, capped at the £60,000 annual allowance. Non-earners can still pay in £2,880 net (£3,600 gross) each year and get basic-rate relief.
How is tax relief given if I use salary sacrifice?
Salary sacrifice routes the contribution before income tax and National Insurance are deducted, so you effectively get full marginal-rate relief without needing to claim on self-assessment. Not all SIPP providers support salary sacrifice from a personal employer, but workplace pensions almost always do. This is one reason to take the workplace match first before topping up a SIPP.