The CGT Exemption for Pension Funds
Registered pension schemes, including SIPPs and SSAS schemes, are exempt from capital gains tax on all disposals of assets. When a SIPP sells a commercial property, the entire gain — however large — is free of CGT. This exemption is provided under the Taxation of Chargeable Gains Act 1992 and applies automatically to all UK-registered pension schemes.
To put the scale of this advantage in context: CGT on commercial property is charged at 24% for higher-rate taxpayers (the current rate from April 2024 for property gains). A gain of £300,000 on a personally-held property would attract CGT of around £69,000 or more after using the annual exempt amount. Inside a SIPP, that same gain is entirely exempt. The full £300,000 remains in the fund to be reinvested.
Why the CGT Exemption Matters for Investors
The CGT exemption is particularly valuable for investors who plan to reinvest property proceeds — either into another property or into other pension assets. Personally-held property investors who sell and reinvest face an immediate CGT cost, meaning only the after-tax proceeds are available for reinvestment. SIPP investors reinvest the full proceeds, giving them a larger capital base from which to generate future returns.
Over multiple property cycles — buy, hold, sell, reinvest — the cumulative CGT saving can be transformational. A SIPP investor who cycles through three properties over thirty years, each time generating a £200,000 gain, saves up to £140,000+ in CGT compared to a personally-held equivalent. That saving, compounded within the pension fund, could be worth several hundred thousand pounds by retirement.
For this reason, the CGT exemption is one of the primary reasons experienced property investors choose to hold at least a portion of their commercial property portfolio within a pension. The exemption is most valuable for those with a long investment horizon and a clear intention to sell and reinvest rather than to hold until death. Read our full overview of SIPP property tax benefits.
What Happens to CGT on Withdrawal From the Pension?
It is important to understand that the CGT exemption within the pension does not mean gains escape all taxation forever. When money is drawn from a SIPP — whether as a pension income, a lump sum or a combination — it is subject to income tax at the member's marginal rate (with the exception of the 25% pension commencement lump sum, which is tax-free).
So the trade is: CGT exemption now (while the property grows within the pension) in exchange for income tax on withdrawal later. For higher-rate taxpayers in accumulation who expect to draw their pension at a lower marginal rate in retirement, this is an extremely attractive trade. Even if you draw at the higher rate, the deferral of tax until retirement — and the compounding of the full, untaxed gains in the meantime — typically produces a better outcome than paying CGT at the point of sale.
The 25% tax-free element (the pension commencement lump sum) effectively provides a partial escape from income tax as well. See our guide to the pension commencement lump sum for how this applies when the pension holds property.
CGT Comparison: Personal vs Pension Property Holding
The following comparison illustrates the CGT advantage of pension-held versus personally-held commercial property:
- Purchase price: £500,000
- Sale price after 15 years: £900,000
- Gain: £400,000
- CGT if held personally (24% after annual exempt amount): approx. £93,600
- CGT if held in SIPP: £0
The £93,600 saving remains inside the pension fund where it continues to compound. If those savings are themselves invested at 5% per annum for a further ten years, the effective benefit grows to over £150,000. The longer the time horizon, the more dramatic the CGT advantage becomes. Use our SIPP Mortgage Calculator to model whether pension-financed property investment makes sense for your specific circumstances.