Free tools
UK landlord calculators
Free, instant calculators for UK landlords. No sign-up required - just open the tool and get your answer.
UK Tenancy Deposit Cap Calculator
Calculate the maximum security deposit you can legally charge under the Tenant Fees Act 2019. Works for weekly and monthly rents.
Section 8 Ground 8 Arrears Calculator
Check whether rent arrears meet the mandatory Ground 8 threshold. Shows which possession grounds are available and whether the court must grant possession.
Section 8 Notice Expiry Date Calculator
Calculate the earliest date you can apply to court after serving a Section 8 notice. Covers all standard grounds including Ground 8, 10, 11, 12, 13, and 14.
UK Rental Yield Calculator
Calculate gross and net rental yield for any buy-to-let property. Enter purchase price, rent, and running costs to see your return instantly.
MTD ITSA Eligibility Checker for Landlords
Find out if Making Tax Digital for Income Tax applies to you as a landlord, and which phase mandates you. Covers the April 2026 and 2027 rollout.
Property Compliance Certificate Calendar
See when your gas safety, EICR, EPC, fire risk and other certificates need renewing. Enter your tenancy start date to map every deadline.
Buy-to-Let Stamp Duty (SDLT) Calculator
Estimate Stamp Duty Land Tax on a buy-to-let or second home purchase in England, including the 5% additional property surcharge.
Section 24 Mortgage Interest Tax Calculator
Compare your tax bill under the old fully-deductible mortgage interest rules against the current 20% tax credit system.
Tenant Rent Affordability Calculator
Check a prospective tenant's income against the standard UK letting industry 30x monthly rent affordability benchmark.
Automate this in STEMHQ
These calculations happen automatically inside STEMHQ. Track arrears, serve Section 8 notices, and stay RRA 2026 compliant without doing the maths yourself.
All calculators are for guidance only and do not constitute legal or financial advice. Always verify with current legislation or a qualified professional.