Gross vs Net Rental Yield: What Buy-to-Let Investors Need to Know in 2026

Gross Yield: The Headline Number

Gross rental yield is the starting point for any buy-to-let analysis. The formula is simple:

Gross yield (%) = (Annual rental income / Property purchase price) x 100

For a property purchased at £250,000 and let at £1,000 per month (£12,000/year):

Gross yield = (£12,000 / £250,000) x 100 = 4.8%

Gross yield is useful for quick comparisons between properties and markets, but it tells you nothing about what you will actually earn after running the property. Two properties with identical gross yields can have very different net returns depending on the age of the property, local letting agent fees and typical void rates.

Estate agents and property portals typically advertise gross yields. It is rare to see net yield figures in marketing materials -- which means investors who rely only on headline yield numbers are likely to be disappointed by actual returns.

Typical Gross Yields by UK Region

Rental yields in the UK vary enormously by location, driven primarily by the ratio of rental demand to property values:

London (Greater London): 3.0-4.5% gross. High property values relative to rents compress yields. Prime central London can fall below 3%. Outer East and South East London boroughs offer slightly better yields.

South East and East of England: 3.5-5% gross. Cities like Reading, Milton Keynes and Peterborough can offer yields at the upper end of this range.

Midlands (West and East): 5-7% gross. Birmingham and Nottingham in particular attract significant investor interest for this reason, with strong rental demand from young professional and student populations.

Yorkshire and Humber: 5.5-8% gross. Cities including Leeds, Bradford and Sheffield can offer strong yields, particularly in HMO (house in multiple occupation) investments.

North West: 5-8% gross. Manchester's strong rental market and comparatively lower prices versus London have attracted substantial institutional and private investment. Liverpool and Salford also offer high yields.

North East: 6-9% gross. The highest gross yields in England, reflecting lower property values. Sunderland and Newcastle attract investors seeking income rather than capital growth.

Scotland: 5-8% gross. Edinburgh and Glasgow offer different yield profiles -- Edinburgh is more capital-growth oriented while Glasgow can offer higher income yields.

Wales: 5-7% gross. Cardiff and Swansea have seen strong rental demand growth.

Calculating Net Yield: The Costs to Deduct

Net yield requires a full accounting of all costs of running the property. The key deductions from gross rental income are:

Void periods: Properties are not let 52 weeks a year. A conservative standard assumption is 5% of annual rent (approximately 2.5 weeks). On £12,000 gross rent, that is £600 in lost income.

Maintenance and repairs: Budget approximately 10% of annual rent for ongoing maintenance. Older properties, houses (vs flats) and properties in certain climates may need more. On £12,000 rent, that is £1,200 per year.

Letting agent fees: A fully managed service typically costs 10-15% of monthly rent including VAT. At 12%, on £1,000/month rent, that is £120/month or £1,440/year. Self-managed properties save this but require much more landlord time.

Landlord insurance: Buildings and contents cover for buy-to-let properties typically costs £200-£500/year depending on property type and value.

Mortgage arrangement fees: Typically £1,000-£2,000 per mortgage term (often 2-5 years). Amortised over the mortgage term, this adds perhaps £200-£400/year.

Ground rent and service charges (leasehold properties): Can range from negligible to several thousand pounds per year for central city flats.

Safety certifications: Gas safety certificates (£70/year), electrical installation condition reports (£200 every 5 years), EPC, smoke alarm testing. Budget approximately £100-£150/year averaged out.

Accountancy and self-assessment: Approximately £300-£500/year for professional preparation of rental accounts.

Net Yield Worked Example

Using the £250,000 property generating £12,000 gross rent:

Net rental income: £12,000 - £4,440 = £7,560

Net yield: (£7,560 / £250,000) x 100 = 3.02%

The gross-to-net gap here is nearly 1.8 percentage points -- a significant difference. And this is before tax.

Section 24 and the Tax Drag on Rental Returns

Section 24 of the Finance (No. 2) Act 2015, phased in between 2017 and 2020, fundamentally changed the tax treatment of mortgage interest for individual buy-to-let landlords.

Before Section 24: Landlords could deduct full mortgage interest from rental profits before calculating tax. A higher-rate taxpayer received 40% tax relief on interest costs.

After Section 24: Mortgage interest (and finance costs) cannot be deducted from rental profits for individual landlords. Instead, a tax credit equal to 20% of finance costs is applied to the final tax bill.

The practical impact for a higher-rate taxpayer with significant mortgage debt can be dramatic. Consider a landlord with:

• Rental income: £12,000
• Allowable expenses (excluding mortgage interest): £3,000
• Mortgage interest: £6,000

Old system: Taxable profit = £12,000 - £3,000 - £6,000 = £3,000. Tax at 40% = £1,200. Section 24 system: Taxable profit = £12,000 - £3,000 = £9,000. Tax at 40% = £3,600. Less 20% credit on £6,000 = £1,200 credit. Net tax = £2,400.

The landlord pays £1,200 more tax per year on the same property -- a 100% increase in tax liability despite identical economics. This has driven some highly leveraged individual landlords to sell or transfer properties into limited companies.

Total Return: Factoring in Capital Growth

Rental yield is only part of the return story for property investment. Capital growth -- the increase in property value over time -- is equally important for long-term investors.

Total annual return = Net yield + Annual capital appreciation (%)

UK residential property has historically appreciated at roughly 3-5% per year on a long-run nominal basis, though this figure masks enormous regional variation and cyclical volatility. The years 2020-2022 saw exceptional double-digit growth; 2023-2024 saw corrections in many markets.

For leveraged buy-to-let, capital growth has an amplified effect. If you purchase a £250,000 property with a £175,000 mortgage (30% deposit), a 5% capital gain of £12,500 represents a 17.9% return on your £70,000 equity -- though this ignores mortgage repayment costs and assumes the gain is realised.

Capital gains on buy-to-let are subject to CGT at 18% (basic rate) or 24% (higher rate) for residential property, with the Annual Exempt Amount reduced to £3,000 in 2026/27. Private Residence Relief does not apply to buy-to-let properties (unless you lived there).

Stamp Duty and True Yield on Total Capital Invested

First-time buy-to-let investors sometimes forget to include stamp duty in their total capital commitment. Residential property purchases by non-first-time buyers attract standard stamp duty, plus a 3% additional dwelling supplement.

For a £250,000 buy-to-let purchase in England:

• Standard SDLT: £2,500 (2% on £125,001-£250,000 band)
• Additional 3% surcharge: £7,500
• Total SDLT: £10,000

Adding this to the purchase price, the true capital deployed is £260,000 (plus legal fees of approximately £1,500-£2,000 and survey costs of £500-£1,000).

True yield on total capital: £7,560 net income / £262,000 total capital = 2.89%

This is materially lower than the headline 4.8% gross yield and underlines why careful due diligence on all-in costs is essential before committing to a buy-to-let investment.