Landlord Calculators
Free, UK-specific calculators for tax, investment and day-to-day operations. Calculations run in your browser — we never see your numbers.
Tax calculators
Section 24 Tax Impact Calculator
See exactly how much extra tax Section 24 costs you on your BTL portfolio — at every tax band.
TaxIncorporation Decision Calculator
Should you transfer your portfolio to a limited company? Get CGT, SDLT, breakeven and 10-year net.
TaxCGT Calculator (Property Disposals)
Calculate Capital Gains Tax on a property sale, including PPR relief, lettings relief and the 60-day reporting deadline.
TaxSDLT / LBTT / LTT Calculator
Stamp duty across England, Scotland and Wales — including the 5% additional dwelling surcharge.
TaxTake-Home Pay Estimator
Estimate your take-home income after tax, National Insurance and allowable expenses.
TaxMileage Claim Calculator
Work out how much mileage you can claim as a business expense using HMRC's simplified rates.
TaxPortfolio Tax Reserve Calculator
Estimate your annual property tax bill (post-Section 24) and how much to set aside each month and per POA.
TaxStudent Loan Repayment Estimator
See how much student loan repayment will be added to your January Self Assessment bill.
TaxLandlord Tax Band Calculator
See your tax band, headroom to the next band, and how one more property would push your tax bill.
TaxDirectors' Salary vs Dividends Calculator
Optimise extraction from your SPV — corp tax, employer NI, dividends and total take-home compared.
TaxInvestment calculators
BTL Yield Calculator
Calculate gross & net yield, ROI on deposit and monthly cashflow — compare two properties side by side.
InvestmentEPC Upgrade Cost-Benefit Calculator
Estimate cost to reach EPC C, ECO4 / Boiler Upgrade Scheme grants, payback period and 2030 deadline countdown.
InvestmentHMO Yield vs BTL Comparison
Compare a single-let against an HMO conversion — yields, conversion payback and the 13% sale premium.
InvestmentAirbnb Pricing & Occupancy Tracker
Track 12 months of nights, ADR and RevPAR — and see whether short-letting beats a long-term AST.
InvestmentBusiness Rates Calculator
Estimate business rates liability for a commercial property or qualifying workspace.
InvestmentPension Gap Calculator
Find out how much you need to save for retirement based on State Pension forecast and target income.
InvestmentBTL Mortgage Affordability Calculator
ICR at actual and stress rates, max borrowing, monthly cashflow — see if a BTL mortgage will fly with lenders.
InvestmentProperty Purchase Total Cost Calculator
Day-one investment, SDLT, fees, refurb, letting setup and first-year ROI — the true cost of a purchase.
InvestmentLease Extension Premium Calculator
Estimate the premium under current rules and the reformed Leasehold Reform Act 2024 — including marriage value warnings.
InvestmentRental Property Comparison Calculator
Side-by-side comparison of two properties — yield, cashflow, ROI, ICR and stress test.
InvestmentOperational calculators
Late Payment Calculator
Work out how much interest and compensation you're owed when a tenant or contractor pays late.
OperationalRental Income vs Expenses Tracker
Log monthly rent and expenses across categories — see annual P&L, monthly average and SA105 box-by-box summary.
OperationalMTD Quarterly Reporting Tool
Track quarterly income and expenses across multiple properties — get year-end reconciliation and POA preview.
OperationalVoid Cost Calculator
Work out the true cost of an empty rental — holding costs plus lost rent at 2, 4, 8 and 12 weeks of voids.
OperationalCash Flow Stress-Test Calculator
Stress-test your portfolio against rate rises, rent falls, longer voids and major repairs — with traffic-light status.
OperationalInvoice Generator
Create a professional PDF invoice with your business details, itemised charges and payment terms.
OperationalRent Increase Calculator
Plan a rent increase — Section 13 procedure, market comparison, tenant affordability and Renters' Rights Act notes.
Operational