About this tool
Why use this tool
Rental yield is the primary metric to assess a buy-to-let investment in the UK. It helps compare properties and cities — a terraced house in Middlesbrough yielding 8 % gross is very different from a flat in central London at 3 %. It also benchmarks buy-to-let against alternatives: FTSE 100 dividend yield around 3 % in 2026, top easy-access cash ISAs around 4.5 % AER, and NS&I Premium Bonds at a 4.35 % prize fund rate from the September 2026 draw — a rate NS&I has changed several times in 2026, so check nsandi.com for the current figure rather than treating it as fixed.
How it works
Gross yield = (annual rent / purchase price) × 100. Net yield subtracts operating costs: mortgage interest (only 20 % tax credit since Section 24), letting agent fees (typically 10–15 % managed), buildings insurance, service charge and ground rent (leasehold), gas safety certificate (£60–£90/yr), EICR every 5 years, EPC every 10 years, void periods (usually 1 month/year) and maintenance reserves. Since 2020 landlords also pay 3 % Stamp Duty surcharge on additional properties.
Real example
Terraced house in Manchester bought for £180,000 (plus £8,400 SDLT surcharge = £188,400 total), rented for £900/month. Annual rent = £10,800. Gross yield = 10,800 / 188,400 × 100 = 5.7 %. After £3,200 in expenses (management £1,300, insurance £250, maintenance £900, certificates £150, void £750), net yield = 7,600 / 188,400 = 4 % — reasonable for the North West.
Practical tips
Target 6 %+ gross outside London to absorb Section 24 and cover leveraged mortgages. Northern cities (Liverpool, Sheffield, Sunderland) often exceed 8 %. Consider incorporation via a limited company to reclaim full mortgage interest — worth it above ~£50k rental income. Register with the property redress scheme and comply with Right to Rent checks. Use ONS PIP data and Zoopla/Rightmove Market Trends. Assess HMO potential (higher yield but more regulation). Check EPC — from 2028, rentals must be C or above (proposal).
Disclaimer
This is an indicative calculation. Actual returns depend on tax status, income band, financing costs and unpredictable events. Your capital is at risk and property values can fall. Seek advice from an FCA-regulated financial adviser and a qualified accountant. This tool is not regulated investment advice.