Property Calculators
13 free tools for UK landlords and investors. Every one includes the real costs other calculators ignore: service charges, agent fees, voids, and tax.
All figures are before tax unless stated otherwise. Educational use only, not financial advice.
Rental yields by area
Average rents, prices and gross yields for 316 local authorities in England and Wales, from official ONS and Land Registry data (May 2026).
Analyse a Deal
Work out what a property really returns before you commit.
RealYield Calculator
CoreFull BTL deal analysis with true net yield, cashflow, stress testing and AI insights
HMO Yield Calculator
Room-by-room yields with bills, voids and licensing
BRRR Calculator
Model buy-refurbish-refinance deals and capital left in
Flip / Refurb ROI
Buy-refurbish-sell profit, ROI and annualised return
Rent vs Buy
Compare the true cost of renting versus buying over time
Tax & Ownership
See what HMRC takes under each structure before you buy or sell.
Section 24 Calculator
The mortgage interest tax disallowance impact for landlords
Personal vs Ltd Company
Compare tax outcomes for both ownership structures
Stamp Duty Calculator
SDLT for additional properties and all buyer types
Capital Gains Tax
CGT liability when selling, with spouse transfer comparison
Financing & Costs
Price the borrowing and the running costs that eat into returns.
BTL Mortgage Calculator
Model loan amounts, LTV, ICR and monthly payments
Remortgage Comparison
Compare your current deal with a new one and find the saving
Bridging Loan Calculator
Total cost of bridging finance: interest, fees, net advance
EPC Retrofit Cost
Estimate the cost of reaching EPC C by 2030