How to Calculate Rental Yield in the UK

What is rental yield?

Rental yield is the annual rental income a property generates, expressed as a percentage of the property's value. It's the headline metric UK landlords and investors use to compare buy-to-let opportunities at a glance.

A higher yield means the property produces more income per pound invested. A lower yield typically indicates a more expensive area where investors are relying on capital growth as well as rent.

Why rental yield matters

Yield gives you a quick, comparable number for very different properties — a £150k terrace in the North vs a £500k flat in London — so you can screen deals before doing deeper analysis.

• Compare investment properties on a like-for-like basis
• Quickly assess cash flow potential
• Check whether rent will cover mortgage stress tests
• Compare areas, postcodes and property types
• Plan portfolio growth and refinancing decisions

Gross rental yield formula

The gross yield formula is simple:

Gross yield is useful for fast screening because you only need two numbers. The trade-off is that it ignores every running cost — so two properties with the same gross yield can have very different real returns.

Net rental yield formula

Net yield is more realistic because it deducts the costs of actually running the property:

Typical costs to include:

• Maintenance and repairs
• Landlord insurance
• Letting and management fees
• Service charges and ground rent (leasehold)
• Mortgage interest
• Void periods and council tax during voids

Example rental yield calculation

What is a good rental yield?

There's no single "right" number, but UK investors generally use these benchmarks:

• Below 4% — lower yield, typical of London and the South East
• 5–7% — common target range for single-let buy-to-let
• 8%+ — high yield, often HMOs, student lets or northern cities

Lower-yield areas often offer stronger capital growth, while higher-yield areas typically deliver income but slower price appreciation. Property type matters too — student lets and HMOs almost always out-yield standard family homes.

Yield vs ROI

Yield and ROI are often confused but measure different things:

• Yield — income performance relative to property value
• ROI — total return on the cash you actually invested, including leverage, capital growth and finance costs

A leveraged buy-to-let with a modest 5% yield can still deliver a 15%+ cash-on-cash ROI thanks to mortgage gearing. Use our Buy-to-Let ROI Calculator to model the full picture.

Common landlord costs

Realistic net-yield calculations need realistic costs. Don't forget:

• Repairs and ongoing maintenance (budget ~10% of rent)
• Void periods between tenancies
• Landlord insurance and contents cover
• Mortgage interest payments
• HMO and selective licensing fees
• Letting agent fees (typically 8–12% managed)
• Council tax during void periods
• Safety certificates (gas, electrical, EPC)

HMO yield vs single-let yield

Houses in Multiple Occupation (HMOs) typically deliver gross yields of 10–15%+ because total rent across rooms exceeds a single-tenancy let. However, they also come with:

• Higher management intensity and tenant turnover
• HMO licensing and additional compliance
• More frequent repairs and shared-area cleaning
• Higher utility and council tax costs (often paid by the landlord)

Use our HMO Deal Calculator to model room-by-room rents alongside HMO-specific costs.

BRRR and yield

The Buy, Refurbish, Refinance, Rent strategy uses an uplifted post-refurb valuation to pull most of your cash back out of the deal. Yield works differently here because you measure it against the new valuation, not the original purchase price — and your cash-on-cash return can be very high once capital is recycled.

Model recycled cash, equity created and ROI with the BRRR Calculator.

Common investor mistakes

• Quoting only the gross yield and ignoring real running costs
• Forgetting void periods in the annual rent figure
• Underestimating maintenance and repair budgets
• Overestimating achievable rent based on best-case listings
• Ignoring mortgage interest in net yield calculations
• Confusing yield with ROI when comparing leveraged deals
• Not refreshing yield as property values change