Buying a Second Property in the UK: The True Costs of a Buy-to-Let in 2026

Investing in a buy-to-let property can be a lucrative way to build wealth, but it is not without its challenges. From higher upfront costs to ongoing expenses and regulatory changes, the financial commitments can be significant. If you are considering a second property in the UK, it is essential to understand the true costs involved—and how to make your investment work for you.

Upfront Costs: More Than Just the Purchase Price

When purchasing a buy-to-let property, the upfront costs extend far beyond the price tag. For a £500,000 property, here is what you can expect:

• Deposit: Buy-to-let mortgages typically require a 25% deposit or more, which means £125,000 upfront. This is significantly higher than the 5-10% often required for residential mortgages.
• Stamp Duty: For second homes, the 3% surcharge applies to every band. On a £500,000 property, this amounts to £22,500 in stamp duty alone. Non-UK residents face an additional 2% surcharge, bringing the total to 5% on each band.
• Legal Fees: Conveyancing and searches can cost between £1,000 and £2,500.
• Survey: A HomeBuyer Report or Full Structural Survey will set you back £500–£1,500, depending on the level of detail required.
• Mortgage Fees: Arrangement fees can range from £1,000 to £2,000, with valuation fees adding another £300–£1,000.

For our £500,000 example, the total upfront cost—excluding legal and survey fees—could exceed £150,000.

Ongoing Costs: The Hidden Expenses of Being a Landlord

Once the property is yours, the expenses do not stop. Here is what you need to budget for:

• Mortgage Payments: With interest rates hovering around 4–5% in 2026, your monthly payments will depend on the size of your loan. For a £375,000 mortgage (75% of the property value), you could be looking at £2,000–£2,500 per month.
• Property Management: If you choose to hire a management company, expect to pay 8–12% of your rental income for basic services, or 22–30% for a full-service package.
• Maintenance: A good rule of thumb is to set aside 1% of the property’s value per year for repairs and upkeep. For a £500,000 property, this means £5,000 annually.
• Insurance: Landlord insurance typically costs £200–£500 per year, while buildings insurance adds another £100–£300.
• Void Periods: It is wise to account for 1–2 months of lost rental income per year when your property is unoccupied.
• Taxes:
  • Income Tax: Rental income is taxed at your marginal rate (20–45%).
  • Capital Gains Tax: When you sell, you will pay 18% (basic rate) or 28% (higher rate) on any profit.
  • Corporation Tax: If you hold the property in a limited company, you will face 19–25% corporation tax on profits.

Rental Yields: What to Expect in 2026

Rental yields vary significantly across London. In central areas, you can expect 3.5–5% gross yield, or 2.5–4% net after costs. In outer boroughs like Barking or Walthamstow, yields can reach 5–7% gross, making them attractive for investors seeking higher returns.

Hotspots for Yield in 2026:

• Croydon: 6%+ gross yield.
• Bromley: 5–6% gross yield.
• Walthamstow: 6%+ gross yield.

Regulatory Changes in 2026: What You Need to Know

The buy-to-let landscape is evolving, and staying informed is key to protecting your investment:

• Renters’ Rights Act: The abolition of no-fault evictions (Section 21) makes it harder to regain possession of your property.
• Energy Efficiency: By 2028, all rental properties must have a minimum EPC rating of C.
• Making Tax Digital: From April 2026, landlords earning over £50,000 must report their income quarterly to HMRC.

How Onyx Property Team Can Help

Navigating the buy-to-let market can feel overwhelming, but you do not have to do it alone. At Onyx Property Team, we specialise in helping investors like you assess yields, costs, and long-term growth potential. Whether you are looking for off-market deals or need support with property management, we are here to ensure your investment is a success.