The 2026 Sell-or-Hold Question: What Every UK Landlord Needs to Know
Buy-to-Let: Sell or Hold 2026
Time to read: 2 minutes
Three developments are converging in 2026 that make the sell-or-hold question more pressing than it has been in years.
Section 24 is now fully phased in. Individual landlords can no longer deduct mortgage interest from rental income before calculating their tax liability. A higher-rate taxpayer with £20,000 in rental income and £10,000 in mortgage interest pays tax on the full £20,000, offset only by a 20% basic-rate credit. For landlords with high LTV mortgages held in personal names, the effective tax rate on actual cash profit can exceed 100%.
Making Tax Digital becomes mandatory from 6 April for landlords with gross income above £50,000. And the Renters’ Rights Act takes effect on 1 May, abolishing Section 21 and converting all tenancies to rolling periodic structures with civil penalties of up to £40,000 for serious breaches.
Against that, the case for holding remains substantial. Capital gains tax on residential property sits at 24% for higher-rate taxpayers, its most favourable level since 2016. Rental demand is running at approximately ten applicants per available property. Rents are growing at 3 to 7% annually. Landlords who exit well-performing assets will find re-entry expensive.
The answer for most portfolio landlords is neither a full exit nor passive retention. It is rationalisation: assessing each property on its own terms across four factors, net yield, tax structure, compliance readiness, and capital growth, and making a different decision for each one.
Properties with net yields below 3%, high LTV mortgages held personally by higher-rate taxpayers, or EPC ratings requiring significant capital expenditure before 2030 are disposal candidates. Properties with yields above 5%, stable tenancies, and compliant ownership structures are holds.
Most portfolios contain both types.
The full framework, including a regional yield breakdown and a free portfolio calculator, is in the main article.
