Free tools
Property Calculators
23 free calculators for UK property investors, landlords, and buyers. No sign-up required.
Deal Analyser
Know if a deal makes money before you commit — 8 metrics, stress tests, and an AI buy/pass verdict.
Mortgage Calculator
See your exact monthly payment and total cost before you apply — repayment vs interest-only.
Mortgage Affordability
Find the maximum you can borrow based on income and outgoings — before you talk to a broker.
Stamp Duty (SDLT)
See exactly how much SDLT you owe — including the 5% additional property surcharge and first-time buyer relief.
Capital Gains Tax
Find out your CGT bill before you sell — with all allowable deductions at the 18%/24% rates.
Remortgage Savings
Work out whether remortgaging actually saves you money once arrangement fees and break-even are factored in.
Rent vs Buy
Find out over 10 years whether renting or buying comes out cheaper for your specific numbers.
Moving Cost Calculator
Add up every cost of moving so there are no surprises on completion day.
Rental Yield
Find out in 60 seconds if a BTL property will genuinely make money after all costs.
BRRR Calculator
See how much money you can pull out after refinancing and whether you can recycle your full deposit.
HMO Yield Calculator
Model your HMO room-by-room and find the occupancy rate where it turns profitable.
Flip / Refurb ROI
Work out your profit margin and annualised ROI on a flip before you buy — not after.
Bridging Loan
See the true total cost of bridging so you know exactly what it eats into your margin.
Landlord Costs
See your real annual profit after every expense, void, tax charge, and management fee.
Section 24 Tax
Find out how much extra tax Section 24 is costing you — and whether a limited company would pay less.
Personal vs Ltd Company
Compare the actual after-tax profit of holding property personally vs through an SPV — with your numbers.
EPC Retrofit Cost
Find out what it costs to hit EPC C — and which improvements give the fastest payback before the 2030 deadline.
Landlord Tax Calculator
See your exact income tax bill on rental income — old rules vs Section 24, and your real net profit.
BTL Mortgage Stress Test
Check if your deal passes the lender's stress test before the mortgage broker tells you it doesn't.
Void Period Cost
Find out what a void period actually costs you — including bills you still pay while it's empty.
Rent Increase Calculator
Model the impact of a rent increase and check you're following the correct Section 13 rules.
BTL Monthly Cash Flow
Get a full monthly income vs expenses breakdown so you know the exact cash in your pocket each month.
Leasehold Calculator
Find out if a short lease is a trap — extension cost, depreciation, and mortgage eligibility risks.
All calculators produce estimates for educational purposes only. Not financial, legal, or tax advice.