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UK landlord calculators — instant answers, zero paywall.
Hand-built by the LetCompliance team for the questions that silently cost landlords thousands: yield, deposit deadlines, Section 21 dates, stamp duty, RRA notice periods and more. No email gate. No card.
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20 tools across finance, compliance, tax, deposits and possession.
Tenancy
Tenancy agreement template
Fill the form, get a free PDF tenancy agreement in under a minute. AST pre-May 2026, Assured Periodic Tenancy after. Landlord, tenant, rent, deposit, bills, break clause. Upgrade for signable, audit-trailed, portfolio versions.
Open calculatorFinance
Rental yield
Gross yield is a vanity metric. See your real net return after mortgage, running costs and tax — the same numbers your portfolio dashboard runs on every property in LetCompliance.
Open calculatorCompliance
Section 21 deadline
Section 21 is being abolished by the Renters Rights Act 2025, but it's still live today. Miss one prerequisite and the notice is invalid, costing you months.
Open calculatorDeposits
Deposit deadline
30 calendar days from receipt, not the tenancy start. Miss it and courts can award tenants 1–3× the deposit and block your Section 21.
Open calculatorFinance
Stamp Duty BTL
SDLT on buy-to-let is complex. Residential rates + 5% additional-property surcharge + 2% non-resident surcharge. Get the exact bill before you offer.
Open calculatorFinance
BTL stress test
Every UK BTL lender stress-tests your rent at 5.5%–7% with ICR of 125% (basic-rate) or 145% (higher-rate). See the maximum loan your rent supports.
Open calculatorFinance
CGT on BTL
Selling a BTL? CGT rates changed in April 2024 and the allowance is now just £3,000. Plus you have 60 days from completion to report and pay. Run the numbers before you accept an offer.
Open calculatorFinance
HMO all-in yield
Gross yield on purchase price flatters bad projects. See true all-in yield on total project cost and cash-on-cash after interest-only mortgage, management and bills.
Open calculatorFinance
HMO mortgage
HMO lenders stress per-room rent at 5.5%–8% with ICR up to 170% for higher-rate landlords. See the maximum loan your room income actually supports — before you offer.
Open calculatorTax
Section 24 tax
Section 24 doesn’t just take away your deduction — it can shove your rental profit into the higher-rate band even when your cash position is basic-rate. See the real number for your portfolio.
Open calculatorTax
MTD ITSA deadlines
Four quarterly updates plus a Final Declaration. Miss one and HMRC starts the penalty point clock. Get every date for your tax year in one place.
Open calculatorPossession
Section 8 notice period
Ground 8 needs 4 weeks’ notice. Ground 1A needs 4 months and a 12-month tenancy. Ground 14 needs none. The Renters’ Rights Act made the rules longer — this tool keeps you valid.
Open calculatorDeposits
Deposit penalty
A late deposit protection isn’t a slap on the wrist — the court can award the tenant up to 3× the deposit, per renewal. See your real exposure before they file.
Open calculatorProperty Safety
Awaab’s Law timer
A missed Awaab’s Law deadline turns a routine repair into an Ombudsman case, an Improvement Notice and a Rent Repayment Order. This timer keeps every milestone in one place.
Open calculatorProperty Safety
EPC retrofit cost
Every new tenancy needs EPC C by April 2028, every existing one by April 2030, with a proposed £15,000 cost cap. See your retrofit bill before the deadline lands.
Open calculatorPossession
Section 13 rent increase
Section 21 abolished means Section 13 is the only lawful way to raise rent. Get the notice period, the earliest valid date and the tribunal-risk flag in one screen.
Open calculatorFinance
Void cost
A 6-week void on a £1,500 BTL costs roughly £2,800 once council tax, bills and re-let fees are added. See the real number before you set the next asking rent.
Open calculatorDeposits
Deposit cap
5 weeks’ rent under £50k annual, 6 weeks’ rent at or above £50k. Over the cap is a banned fee — returnable to the tenant, plus a Section 21 block. Get the exact lawful figure.
Open calculatorPossession
Break clause date
A break clause is only as good as the dates inside it. Get the earliest activation date, the notice service deadline and the move-out date in one screen — in seconds.
Open calculatorDeposits
Deposit scheme quiz
Three government-authorised schemes, six product variants — free custodial vs paid insured. 5 questions, one ranked recommendation. No email needed.
Open calculatorWhy free, why no signup?
These tools solve a problem in under 30 seconds. If they help and you decide LetCompliance could run your whole portfolio, great. If not, bookmark the page and come back any time. We track zero personal data on these calculators.