Renters' Rights Act 2025: Tax Implications for UK Landlords

The Renters' Rights Act 2025 (2025 c. 26) is the most consequential reform of the assured-tenancy regime since the Housing Act 1988. Royal Assent on 27 October 2025; substantive tenancy-reform provisions commenced on 1 May 2026 under SI 2026/421. From that date, Section 21 no-fault evictions ceased, every fixed-term assured shorthold tenancy converted to a periodic assured tenancy, possession runs entirely through reformed Section 8 grounds, and a new 12-month re-letting restriction under HA 1988 s.16E (inserted by RRA 2025 s.15) binds landlords who recover possession on Ground 1 or Ground 1A.

This guide is the tax-implications hub for the post-RRA landlord environment. The operational, regulatory, and compliance mechanics are covered in detail in our companion pages: Section 21 abolition operational mechanics, Schedule 1 grounds reform walk-through, AST-to-periodic conversion obligations, mandatory landlord redress scheme enrolment, EPC C 2030 vs enacted floor, EPC improvement grant schemes, BSA 2022 leaseholder protections, and HMO and selective licensing compliance. This page draws the tax-side threads together.

The Five Tax-Side Channels of RRA 2025 Impact

The Act does not change the structural UK tax framework for rental income (income tax, Section 24 mortgage interest restriction, capital gains tax on disposal, the 2027 separate property income tax rates of 22%/42%/47%). But it changes the operational environment in which that framework operates, with consequences running through five distinct channels:

1. Rental-income cash flow. Longer notice periods on landlord-led possession grounds (4 months for Ground 1, Ground 1A, Ground 6) extend the period between decision and recovery. The 12-month re-letting restriction creates rental-income gaps where possession is recovered for sale or occupation but the underlying plan changes.
2. Legal-fee deductibility on possession claims. Section 8 possession claims now run through a heavier evidential pack and longer procedural timeline. Solicitor and court fees on tenant-default grounds (Grounds 8, 10, 11, 12) are clearly revenue-deductible; fees on Ground 1A landlord-sale possessions sit on the capital side under HMRC's BIM35000 dominant-purpose test.
3. CGT timing on Ground 1A disposals. The 4-month notice period extends the planning window for Ground 1A sales. Non-resident landlords with NRCGT obligations gain time for the 60-day reporting mechanics. The 12-month re-letting restriction means a failed sale leaves the landlord constrained from rental re-let, accelerating the case for re-marketing the disposal.
4. Capital-vs-revenue treatment of compliance spend. MEES energy-efficiency improvements, BSA 2022 building-safety remediation, prospective Decent Homes Standard upgrades, scheme membership fees, and PRS Database registration fees each sit in their own capital-vs-revenue zone. Getting the classification right matters for both the current-year tax position and the long-term CGT base cost.
5. Incorporation decision pressure. Section 24 plus 2027 separate property income tax rates strengthen the comparative advantage of corporate ownership. But the BSA 2022 qualifying-lease test under s.119 (requires individual ownership at 14 February 2022) is lost on corporate-held leases, creating uncapped remediation exposure on SPV-held flats in cladding-affected buildings. The incorporation decision now turns on property-by-property economics across multiple competing factors.

Rental-Income Cash Flow: The Longer Notice Periods and the 12-Month Restriction

The reformed Section 8 grounds carry differentiated notice periods that reshape the rental-income cash-flow profile of any landlord-led possession.

Landlord-Led Grounds: 4-Month Notice

Ground 1 (landlord-or-family occupation), Ground 1A (landlord intent to sell), and Ground 6 (substantial works) all carry 4-month notice periods under Schedule 1 RRA 2025. This is double the previous Section 21 2-month notice. For a landlord deciding in (say) February 2027 to sell a property with vacant possession, the Ground 1A timeline runs:

• February 2027: notice served.
• June 2027: notice expires; possession proceedings may issue if tenant has not vacated.
• August 2027: typical court hearing (6-8 weeks post-issue).
• September 2027: bailiff warrant if needed.
• October 2027: vacant possession achieved.
• November-December 2027: sale completion (assuming 6-8 week conveyance).

That is approximately 10 months from decision to completion, versus 6-7 months pre-RRA. The cash-flow implication is that rental income continues through the notice period (revenue receipts) but is interrupted at the vacant-possession date and not resumed until either sale completion or a new tenancy.

The 12-Month Re-letting Restriction

Where the sale fails (chain collapse, buyer pull-out), the landlord cannot re-let the property as an assured tenancy for 12 months from the date of vacant possession under HA 1988 s.16E. Breach is enforced through s.16K civil penalty up to £40,000 per offence. The financial consequence is a rental-income gap that cannot be filled by re-letting; the property must remain marketed for sale or accept no rental income for the 12-month window.

Tax Treatment of the Income Gap

The lost rental income during the gap is not a deductible tax loss. The tax framework allows deductions against income actually received, not against income that might have been received. However, ongoing operating costs during the gap remain deductible to the extent of the active rental business and any continuing intention to let after the restriction lifts. These include:

• Council tax (now landlord-borne during the gap).
• Building insurance and contents insurance.
• Mortgage interest (subject to Section 24 restriction for personally-held lettings).
• Ground rent and service charges on leasehold properties.
• Sale-related marketing fees (revenue if the underlying purpose remains hold-and-let with sale as secondary; capital if the dominant purpose is sale).

Legal-Fee Deductibility: The Dominant-Purpose Test

Section 8 possession claims now require an evidential pack that survives a defended hearing. Legal fees have risen accordingly. The tax-side treatment depends on the dominant purpose of the possession.

Tenant-Default Possession (Grounds 8, 10, 11, 12, 14)

Legal fees are revenue-deductible against rental income under ITTOIA 2005 s.272 (accruals) or s.34 (cash basis). The dominant purpose is preserving the income-earning capacity of the rental business by removing a non-paying or defaulting tenant. Covers solicitor fees for drafting and serving notices, court fees for issuing proceedings, advocacy fees at the hearing, and bailiff or High Court Enforcement Officer fees for warrants of possession.

Ground 1A Landlord-Sale Possession

The dominant purpose is sale, not preservation of rental income. HMRC's BIM35000 series treats legal fees with a sale-related dominant purpose as capital costs of the disposal, which:

• Do NOT reduce this year's rental tax bill.
• DO add to the CGT base cost on eventual disposal, reducing the chargeable gain.

Where the situation is mixed (the tenant was in arrears AND the landlord was planning sale), apportionment between rental-business preservation and sale-disposal cost is appropriate. The apportionment depends on the facts; specific advice should be sought before reporting.

Ground 1 Landlord-Occupation Possession

The dominant purpose is personal occupation, not rental-business operation. Legal fees are typically not deductible as rental expenses because the underlying purpose is no longer the rental business. The fees may form part of the cost of acquiring vacant possession of a future home and have no income-tax relief; CGT base-cost addition may apply where the property is subsequently sold.

Capital-vs-Revenue Treatment of Compliance Spend

The post-RRA-2025 environment generates multiple compliance-spending streams. Each sits in its own capital-vs-revenue zone.

MEES Energy-Efficiency Improvements

Most improvements (insulation, double glazing, heat-pump installation, structural improvements for thermal performance) are capital expenditure adding to the CGT base cost under TCGA 1992 s.38(1)(b). Like-for-like maintenance is revenue. Grant receipts (ECO4, BUS, GBIS, HUG2) reduce the CGT base-cost addition; grants are not income. The 0% VAT rate on energy-saving materials (in force April 2022 to March 2027) reduces gross costs significantly.

BSA 2022 Building-Safety Remediation

For qualifying leases under s.119, cladding remediation is fully protected (no landlord cost); non-cladding remediation is capped at £10k/£15k/£50k/£100k under Sch 8 para 6. For non-qualifying leases (SPV-held, 4+ property landlords, post-Feb-2022 grants), the freeholder cost-pass-through is uncapped. Landlord-borne remediation costs are typically capital (improvement above prior spec) adding to CGT base cost; like-for-like restoration is revenue. Plant and machinery in common parts qualifies for capital allowances under the CAA 2001 s.35 dwelling-house carve-out.

Decent Homes Standard Compliance (When Operative)

The RRA 2025 Part 3 Decent Homes Standard for PRS is partially in force from 27 December 2025 (preliminary provisions only). The substantive standard awaits a further SI. When operative, compliance spend will follow the same capital-vs-revenue split: improvements capital; repairs revenue.

Scheme Membership and Database Fees

When the RRA 2025 ss.64-74 redress scheme regime is operative (currently only s.74 commenced), annual scheme membership fees will be revenue-deductible under ITTOIA 2005 s.272. Same for PRS Database registration fees when that regime is operative (currently not commenced).

Incorporation Decision Pressure: Section 24 + 2027 Rates + BSA 2022 Cross-Effect

The post-RRA landscape sharpens the incorporation decision but also adds a new factor on the other side of the ledger.

The Standard Pro-Incorporation Argument

Limited companies avoid the Section 24 mortgage-interest restriction. A property held in an SPV pays corporation tax (19% small profits rate up to £50,000; 25% main rate above £250,000; marginal relief between £50k and £250k). Personal ownership pays income tax at the prevailing slab rates, with mortgage interest restricted to 20% basic-rate tax credit only.

The 2027 separate property income tax rates (22% basic, 42% higher, 47% additional) make this comparison sharper. A higher-rate-taxpayer landlord with significant mortgage interest may face an effective marginal tax rate of 47% personally vs 25% corporately. The case for incorporation strengthens.

The New Counterweight: BSA 2022 Qualifying-Lease Loss

For flats in cladding-affected buildings (any residential building of 11m+ height or 5+ storeys, with at least 2 dwellings), the BSA 2022 Sch 8 leaseholder protections only attach to qualifying leases under s.119. Qualifying-lease conditions include: lease granted pre-14 February 2022; leaseholder at 14 February 2022 was an individual (not a company); only-or-principal-home OR ≤3 UK residential properties.

SPV-held leases fail the individual-leaseholder condition. The full freeholder cost-pass-through risk attaches to a corporate-held lease. For cladding remediation (fully protected on qualifying leases), the exposure could be 5- or 6-figure on a single flat. The incorporation tax-benefit may be wiped out by a single round of remediation costs.

The Practical Decision Framework

Run the incorporation decision per-property weighing:

• Section 24 + 2027 rates benefit of corporate ownership.
• Mortgage interest deductibility position post-incorporation.
• BSA 2022 qualifying-lease status (individual-held at 14-Feb-2022 = qualifying; SPV-held = non-qualifying with uncapped remediation exposure).
• SDLT cost of incorporation (Sch 15 partnership SLP route may avoid SDLT in some cases; otherwise full SDLT plus 3% surcharge).
• CGT on incorporation (incorporation relief under TCGA 1992 s.162 if conditions met).
• Inheritance tax position (corporate ownership shifts to share-value-of-company-shares analysis; may improve or worsen depending on facts).

Generic recommendations to incorporate or not incorporate are unsafe. The right answer is property-by-property and circumstance-by-circumstance.

CGT Timing on Ground 1A Disposals

Ground 1A is the new operational route for landlord-led portfolio disposal under the post-RRA regime. The CGT-timing consequences:

Extended Pre-Disposal Window

The 4-month Ground 1A notice period extends the timeline between disposal decision and completion. For non-resident landlords with the 60-day NRCGT reporting and payment obligation, this gives more time to:

• Engage with the SA100 / non-resident filing position.
• Plan the disposal mechanics (which property in the portfolio, timing relative to other disposals in the same tax year, use of the annual exempt amount).
• Engage on any rebasing or PPR-relief positions (private residence relief where the landlord historically occupied the property).

The Annual Exempt Amount

The CGT annual exempt amount is £3,000 from 2024/25 onwards (down from £12,300 in 2022/23). For property disposals, this provides limited shelter. Landlords disposing of multiple properties in the same tax year typically use the annual exempt amount on the smallest gain and accept full CGT on the others. Spacing disposals across tax years can preserve the annual exempt amount for multiple years.

Rates Position on Residential Property

From October 2024 the residential-property CGT rates are 18% basic rate / 24% higher rate (down from the pre-October-2024 rates of 18%/28%). The rate reduction modestly improved the after-tax position on disposals but does not change the structural framework.

BADR / Business Asset Disposal Relief

BADR is generally not available on residential rental properties (the rental business is not a qualifying trade for BADR purposes). The historical FHL (Furnished Holiday Let) carve-out, which allowed BADR on qualifying FHL trades, was withdrawn by Finance Act 2025 from 6 April 2025. Landlords with historic FHL portfolios should check the specific position carefully; BADR access on pre-April-2025 disposals may still be available subject to the 2-year holding period test.

Section 24 Mortgage Interest Restriction Interaction

Section 24 (more formally, the basic-rate-restriction on finance costs under ITTOIA 2005 ss.272A-272C) restricts mortgage interest relief on personally-held residential rental properties to a 20% basic-rate tax credit. The restriction has been fully in force since 2020/21 and is unchanged by the RRA 2025.

The post-RRA cash-flow profile interacts with Section 24 in a worsening direction:

• Extended notice periods on landlord-led grounds mean rental income continues during the 4-month notice but ceases at vacant possession. Section 24's 20% credit applies to mortgage interest paid; the credit continues during the notice period but the income against which it offsets falls at vacant possession.
• The 12-month re-letting restriction creates a 12-month period where mortgage interest continues to accrue but no rental income is generated. The 20% credit still applies but against a zero-rental position; the net effect is unrelieved mortgage interest.
• The new s.13 rent-review constraint (one increase per 12 months, FTT-challengeable) limits the speed at which rental income can rise to compensate for rising mortgage rates. Landlords with highly-geared portfolios face particular pressure where rate rises outpace permissible rent increases.

The 2027 Separate Property Income Tax Rates

From 6 April 2027, separate property income tax rates take effect: 22% basic rate / 42% higher rate / 47% additional rate. The rates apply to rental income from UK property held by individuals. The 2-percentage-point uplift over the standard income tax rates (20% / 40% / 45%) is a structural cost for personally-held portfolios.

For a higher-rate-taxpayer landlord with £50,000 of rental profit, the 2027 rate change adds £1,000 to the annual tax bill (42% vs 40%). For an additional-rate landlord with £100,000 of rental profit, the 2027 change adds £2,000 (47% vs 45%). At portfolio scale these become material annual numbers.

The 2027 rate change combined with the Section 24 restriction is one of the strongest pro-incorporation arguments for higher-rate-taxpayer landlords. Limited companies pay corporation tax on rental profit (19% small profits, 25% main rate, marginal relief between) without the 2027 uplift.

Practical 7-Step Action List for Portfolio Landlords

1. Tenancy-agreement audit. Per property, identify clauses voided by the AST-to-periodic conversion vs clauses that survive. Issue a conversion-confirmation letter to each tenant.
2. Rent-review system update. Move from contractual rent-review clauses to the new HA 1988 s.13 procedure. Track the next eligible increase date per tenancy.
3. EPC band audit. Confirm current EPC for each property. Identify properties at risk under the prospective EPC C 2030 trajectory. Plan capex sequencing prioritising EPC D properties for early action.
4. BSA 2022 Sch 8 qualifying-lease assessment. For each flat in a cladding-affected building, run the s.119 test. Engage with the freeholder on cost-pass-through positions.
5. Compliance sequencing. Across the multiple regimes (HMO licensing at £40k civil penalty post-1-May-2026, redress scheme when operative, PRS Database when operative, EPC C if legislated), sequence by enforcement immediacy and cost.
6. Incorporation review. Per property and per portfolio, weigh Section 24 + 2027 rates benefit vs BSA 2022 SPV-leasehold exposure. Generate a property-by-property action list rather than a portfolio-wide binary decision.
7. MTD for ITSA readiness. Ensure digital record-keeping systems can capture the increased complexity of post-RRA tenancy operations. The MTD trigger thresholds (£50k from 6-Apr-2026; £30k from 6-Apr-2027; £20k from 6-Apr-2028) draw most portfolio landlords into scope quickly.

The Tax Position in One Line

The Renters' Rights Act 2025 does not change the structural UK tax framework for rental income but reshapes the operational environment in which the framework operates: longer notice periods, the 12-month re-letting restriction on Grounds 1 and 1A, the new s.13 rent-review procedure constraining rent increases, the capital-vs-revenue split on MEES + BSA + DHS compliance spend, the incorporation-decision pressure under Section 24 + 2027 separate property tax rates moderated by the BSA 2022 SPV-leasehold exposure, and the CGT timing flexibility on Ground 1A disposals. Portfolio landlords planning post-1-May-2026 operations should run a property-by-property review of each channel against their specific circumstances; generic prescriptions are unsafe.