This guide is for new or prospective landlords considering their first buy-to-let investment in 2026. It covers the financial fundamentals (mortgages, yield, tax), the legal obligations that come with being a landlord under current English law, and the practical compliance steps required before and at the start of a tenancy.
The Renters' Rights Act 2025 — which commenced on 1 May 2026 — has changed several fundamental features of the landlord-tenant relationship: fixed-term tenancies are abolished, Section 21 no longer exists, and new obligations apply from day one of every new tenancy. Anyone entering buy-to-let in 2026 must understand the new framework from the start.
Buy-to-let mortgage basics
Buy-to-let mortgages are assessed differently from residential mortgages. Key differences:
- Rental income coverage: Most lenders require the expected monthly rent to exceed 125–145% of the monthly mortgage interest payment (the 'interest cover ratio' or ICR)
- Deposit requirements: Minimum 25% deposit for most buy-to-let mortgages; best rates typically at 40%+ LTV
- Personal income: Many lenders require minimum personal income of £25,000–£35,000 alongside the rental income
- Interest-only vs repayment: Most buy-to-let investors use interest-only mortgages to maximise monthly cash flow — but you will need a strategy for repaying the capital at the end of the term
- Limited company mortgages: Many landlords use a Special Purpose Vehicle (SPV) limited company for tax efficiency — different lenders and rates apply
Calculating yield and return
Before purchasing, calculate both gross and net yield to assess viability:
- Gross yield: Annual rent ÷ purchase price × 100. A £180,000 property renting at £900/month = gross yield of 6%
- Net yield: (Annual rent - annual costs) ÷ purchase price × 100. Costs include: mortgage interest, insurance, letting agent fees, maintenance, void periods, licensing fees
- Target yields: UK average gross yield is approximately 5–7% (2026). Northern cities (Manchester, Leeds, Liverpool, Sheffield) typically offer higher yields than southern commuter belt
- Capital growth: Yields are only one component — long-term capital growth in the right location adds to total return, but is not guaranteed
- Void allowance: Budget for at least 1–2 months per year of void (empty) periods in your yield calculation
Tax — Section 24 and the rental income rules
Tax is the most significant factor affecting buy-to-let viability for higher-rate taxpayers. Key rules in 2026:
- Section 24 (Finance Act 2015): Mortgage interest relief is restricted to a 20% tax credit regardless of your income tax rate. Higher-rate (40%) and additional-rate (45%) taxpayers cannot deduct mortgage interest as an expense
- Income tax on rent: Rental profit (income minus allowable expenses excluding mortgage interest) is taxed at your marginal income tax rate
- Allowable expenses: Letting agent fees, insurance, repairs and maintenance, gas and electrical safety costs, accountancy, service charges, ground rent
- Capital gains tax: When you sell, CGT applies on the gain above your annual CGT allowance (£3,000 in 2026). The residential property rate is 24% for basic rate and 24% for higher rate taxpayers
- Limited company: Landlords with multiple properties often incorporate to pay corporation tax (19–25%) rather than income tax, and to retain the full mortgage interest deduction within the company
Legal obligations — the 2026 framework
From 1 May 2026, the Renters' Rights Act 2025 changed the fundamental nature of the landlord-tenant relationship in England. New buy-to-let landlords must understand:
- No fixed-term tenancies: All new lettings from 1 May 2026 must use a Periodic Assured Tenancy Agreement — no fixed terms
- Section 21 abolished: You cannot evict a tenant without a valid ground under Section 8. Know the grounds before you let
- Section 8 as the only possession route: Mandatory grounds (e.g. Ground 8 for 3+ months' rent arrears) are reliable; discretionary grounds require court persuasion
- Rent increases via Section 13 only: One increase per 12 months with 2 months' notice on Form 4A
- Pet requests: You cannot have a blanket no-pets policy — you must respond in writing to each pet request within 42 days
Compliance checklist before first tenant
Every buy-to-let landlord must have all of the following in place before the first tenant moves in:
- EPC certificate (grade E or above) — obtained before marketing
- Gas Safety Record (CP12) — annual inspection by Gas Safe registered engineer
- EICR (Electrical Installation Condition Report) — every 5 years
- Smoke alarms on every habitable floor; CO alarms in every room with a fixed combustion appliance
- Buy-to-let mortgage lender's consent (if applicable)
- Landlord buildings insurance (standard home insurance is void for rentals)
- Property licensing check — HMO licence if applicable; selective licence if in designated area
- Periodic Assured Tenancy Agreement (England) from 1 May 2026
- How to Rent guide (current edition) served on every tenant
- Deposit protection in an approved scheme within 30 days; Prescribed Information served
Frequently asked questions
Is buy-to-let still worth it in 2026?+
Buy-to-let remains viable in 2026 but requires more careful analysis than in previous decades. Section 24 mortgage interest restrictions significantly reduce after-tax returns for higher-rate taxpayers holding properties personally. Many investors now use limited companies. Strong rental demand and rising rents in most UK cities support income returns, but higher compliance costs, Stamp Duty surcharges, and legislative complexity have reduced overall returns compared to a decade ago.
How much deposit do I need for a buy-to-let mortgage?+
Most buy-to-let lenders require a minimum 25% deposit. The best rates are available at 40% LTV or above. Some lenders will consider 20% deposits in limited circumstances but rates are significantly higher. You will also need to factor in Stamp Duty Land Tax (3% surcharge on second homes), survey costs, legal fees, and initial renovation or compliance costs.
What tenancy type do I use for a new let in England in 2026?+
A Periodic Assured Tenancy Agreement (PAT) — no fixed term. The Renters' Rights Act 2025 abolished fixed-term assured shorthold tenancies from 1 May 2026. All new lettings in England must be periodic. The tenancy runs month to month (or week to week if rent is paid weekly) and can only be ended by the tenant giving notice or by the landlord obtaining a possession order on a valid Section 8 ground.
How do I evict a buy-to-let tenant who stops paying rent in 2026?+
Serve a Section 8 notice citing Ground 8 (mandatory — 3+ months' rent arrears), Ground 10 (discretionary — any arrears), and Ground 11 (discretionary — persistent late payment). Wait for the 4-week notice period to expire, then issue a possession claim at the county court. If arrears are still 3+ months at the hearing, the court must grant possession under Ground 8.