Answers · UK 2025/26
How does bed and SIPP work with the 30-day rule?
"Bed and SIPP" means selling an investment held outside a pension (e.g. in a general investment account) and immediately repurchasing the same investment inside your SIPP, claiming pension tax relief on the reinvested amount. HMRC's 30-day "bed and breakfasting" share-matching rule prevents you from creating an artificial Capital Gains Tax loss by buying back the same shares within 30 days in the SAME account -- but because the repurchase happens in a different account (your SIPP), the 30-day rule does not block the strategy.
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Bed and SIPP is a well-established tax-planning technique that lets investors move existing investments into the more tax-efficient pension wrapper while claiming pension tax relief along the way, and understanding the 30-day rule is key to using it correctly. **What the 30-day rule normally prevents** For Capital Gains Tax purposes, HMRC's share identification rules (sometimes called the "bed and breakfast" rule) stop investors from selling shares to crystallise a loss (or manage their CGT position) and then buying back the identical shares within 30 days in the same account, which would otherwise let someone realise a tax loss on paper while keeping the same economic position. If you sell and rebuy within 30 days in the same account, the disposal is matched against the new purchase rather than your original cost, largely cancelling out any claimed loss or gain. **Why bed and SIPP sidesteps this** Bed and SIPP works differently because you are not repurchasing in the same account -- you sell within your general investment account (or ISA, though ISA sales for this purpose are less common since ISA gains aren't taxed anyway) and then buy the same investment inside your SIPP. Because a SIPP is a legally distinct account from your general investment account, the 30-day matching rule that applies within a single account does not apply across the sale-and-SIPP-purchase, so you are free to rebuy the identical holding immediately inside the pension. **The two tax benefits combined** First, selling outside the pension may trigger a Capital Gains Tax liability (or use up your £3,000 annual CGT exemption) on any gain since you originally bought the investment -- this is often accepted as a worthwhile cost to get the holding into a pension. Second, the cash you use to repurchase inside the SIPP attracts pension tax relief at your marginal rate (so a basic-rate taxpayer effectively gets a 20% top-up, a higher-rate taxpayer up to 40%, via relief at source or a Self Assessment claim), meaning the repurchase costs you less in net terms than the sale proceeds you received. **Market risk during the switch** Because the sale and SIPP repurchase are two separate transactions, there is a brief period of market exposure risk -- if prices move sharply between the sale and repurchase, you could end up buying back fewer units/shares than you sold, so many investors do bed and SIPP as close to simultaneously as their platform allows. **Annual allowance and contribution limits still apply** The repurchase inside the SIPP still counts as a pension contribution towards your £60,000 annual allowance (or your tapered allowance if you're a high earner, or £10,000 if the Money Purchase Annual Allowance applies), so you cannot use bed and SIPP to exceed your normal pension contribution limits. **Practical tip** Check whether your platform offers bed and SIPP as a single combined dealing instruction, since doing it as two manual separate trades increases both cost and market-timing risk compared with a platform-facilitated switch.
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This answer is informational only and does not constitute financial, tax or legal advice. Figures are for the 2025/26 UK tax year. See our methodology and sources.