Renters' Rights Act 2025, Phase 1 commencement
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BTL to Company Incorporation 2026

Transfer BTL Portfolio to Limited Company — SDLT, CGT, Incorporation Relief and Section 24 Tax Analysis

Transferring a buy-to-let portfolio to a limited company: the main tax driver is avoiding the Section 24 finance cost restriction (companies deduct full mortgage interest) and accessing corporation tax rates (19-25%) vs higher-rate income tax (40-45%). Key obstacles: SDLT at market value (FA 2003 s.53) + 3% surcharge; Multiple Dwellings Relief abolished June 2024; CGT on disposal at market value (TCGA 1992 s.18); incorporation relief (TCGA 1992 s.162) usually unavailable for passive BTL; mortgages require full refinance at company BTL rates. Scotland: LBTT + ADS 6%. Wales: LTT higher residential rates.

14 min readUpdated 7 June 2026Last reviewed: 17 May 2026limited-companyincorporationsection-24sdlt

Why landlords consider incorporating: Section 24 and corporation tax

The Section 24 finance cost restriction (Income Tax Act 2007 s.272A) prevents individual landlords from deducting mortgage interest fully from rental income — relief is limited to the basic rate (20%). A limited company owning rental property is NOT subject to Section 24 and deducts full mortgage interest. Combined with corporation tax rates of 19-25% vs income tax at 40-45% for higher-rate payers, the ongoing tax saving for a highly-geared, higher-rate landlord can be significant. However, the one-off transaction costs of incorporation frequently exceed the projected tax saving for many portfolios.

SDLT obstacle: transfer to connected company at market value

  • FA 2003 s.53: when property is transferred to a connected company (one controlled by the transferor — Corporation Tax Act 2010 s.1122), SDLT is calculated on the higher of actual consideration and open market value — even if no cash changes hands and the landlord simply contributes properties in exchange for shares
  • 3% SDLT surcharge: the additional dwelling surcharge (3%) applies to every residential property transferred to a company
  • Example: £300,000 property — approximately £14,000 standard SDLT + £9,000 surcharge (3%) = approximately £23,000 SDLT per property
  • Multiple Dwellings Relief (MDR): ABOLISHED for transactions completing on or after 1 June 2024 (Finance Act 2024 s.11) — no longer available to reduce SDLT on portfolio transfers
  • Partnership route (FA 2003 Schedule 15): previously used to access lower SDLT treatment; HMRC has challenged these schemes; very restricted for residential property portfolios — specialist advice required before attempting any SDLT planning

CGT obstacle: disposal at market value and incorporation relief (s.162 TCGA)

  • TCGA 1992 s.18: a transfer of property to a connected company is treated as a disposal at open market value for CGT purposes — regardless of the actual consideration received; if the property has increased in value since acquisition, CGT is payable on the gain
  • CGT rates on residential property from 6 April 2024: 18% (basic rate taxpayers); 24% (higher/additional rate taxpayers)
  • Incorporation Relief (TCGA 1992 s.162): defers CGT when a 'business' is transferred to a company in exchange for shares — the gain rolls into the base cost of the shares rather than crystallising
  • HMRC's position on s.162 and BTL letting: a passive property letting portfolio is an investment, not a business — incorporation relief is NOT available; the 2013 Upper Tribunal decision in Ramsay v HMRC UKUT 0226 (TCC) held that actively managed lettings could qualify as a business under s.162, but this is fact-specific; landlords who manage their portfolio entirely through a letting agent are much less likely to qualify
  • Specialist tax advice and HMRC clearance should be obtained before relying on s.162

Mortgage complications and Scotland/Wales transaction taxes

  • Most BTL mortgages prohibit transfer of the mortgaged property to a company without the lender's consent — consent is almost never given; the personal BTL mortgage must be repaid and the company must obtain a new company BTL mortgage
  • Company BTL mortgages: typically 0.25-1.5% higher interest rate; personal guarantee from director/shareholder required; stricter minimum property value and rental yield criteria; fewer lenders in the company BTL market
  • Additional transaction costs: legal fees (title transfer to company); Land Registry fees (property registration in company name); early repayment charges on existing personal BTL mortgages; company BTL mortgage arrangement fees
  • Scotland (LBTT + ADS): Land and Buildings Transaction Tax is charged on company purchases; the Additional Dwelling Supplement (ADS) at 6% (from April 2024) applies to companies acquiring residential property — this applies in addition to standard LBTT rates
  • Wales (LTT): Land Transaction Tax applies; Higher Residential Rates (HRR) apply to company purchases of residential property — rates set by the Welsh Government and revised periodically

When does incorporation make financial sense?

  • Most financially beneficial when: the landlord is a higher or additional rate taxpayer (40-45% income tax); the portfolio is highly geared (high mortgage debt relative to value — Section 24 costs most); the landlord intends to hold the portfolio long-term through the company (maximising the compound benefit of retained profits at corporation tax vs income tax rates)
  • Less beneficial or not beneficial when: small portfolio or low rental income; low mortgage leverage (low Section 24 impact); landlord is close to retirement or planned to sell within 5-10 years (transaction costs may not be recouped); portfolio contains properties with large unrealised gains (CGT crystallisation is very costly if s.162 unavailable)
  • Total transaction costs check: before proceeding, calculate SDLT + CGT (if s.162 unavailable) + legal fees + mortgage arrangement fees + ERC (early repayment charges) as a percentage of portfolio value; compare against projected annual tax saving; divide transaction costs by annual saving to find the 'payback period'
  • Typically: break-even period of 7-15 years for a high-geared portfolio of modest size — portfolios with total transaction costs exceeding 10% of portfolio value often do not recover costs before the landlord exits

Frequently asked questions

Does Section 24 apply to a limited company that owns rental properties?+

No. The Section 24 finance cost restriction (Income Tax Act 2007 s.272A) applies only to individual landlords — it restricts the deduction of mortgage interest and other finance costs to the basic rate of tax (20%). A limited company that owns rental properties is not subject to Section 24 and can deduct the full amount of mortgage interest and finance costs from rental income before calculating its taxable profits. This is the primary ongoing tax-saving driver for higher-rate and additional-rate taxpayer landlords considering incorporation.

Will I get incorporation relief (CGT deferral) when I transfer my BTL portfolio to a company?+

This is uncertain and depends on the facts of your management activity. Incorporation relief (TCGA 1992 s.162) defers CGT when a 'business' is transferred to a company in exchange for shares. HMRC's position is that a passive BTL portfolio is an investment, not a business — incorporation relief is not available. The 2013 Ramsay v HMRC decision found that actively managed lettings could qualify, but this is fact-specific. Landlords who manage all their properties personally (not through a letting agent) are in a stronger position, but specialist tax advice and HMRC clearance should be obtained before relying on s.162.

How much SDLT do I pay when transferring buy-to-let properties to a company?+

SDLT is calculated on the market value of each property transferred (FA 2003 s.53), not just the consideration actually paid, plus the 3% additional dwelling surcharge. For a property worth £300,000, this is approximately £23,000 in SDLT. Multiple Dwellings Relief was abolished from 1 June 2024 and is no longer available to reduce the SDLT burden on portfolio transfers. Scotland charges LBTT plus the Additional Dwelling Supplement (ADS) at 6%; Wales charges Land Transaction Tax at higher residential rates.

What happens to my buy-to-let mortgage when I transfer the property to a limited company?+

Most BTL mortgage contracts prohibit transfer of the mortgaged property to a company without the lender's consent — lenders almost never give this consent. In practice, the personal BTL mortgage must be repaid in full when the property is transferred, and the company must then obtain a new company BTL mortgage. Company BTL mortgages typically have higher interest rates, require a personal guarantee from the director, and have stricter lending criteria. Mortgage refinancing costs — arrangement fees, valuation fees, and any early repayment charges — add materially to the total cost of incorporation.

Templates recommended in this guide

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