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Calculators for the dates that actually matter

Letting a property in England runs on a handful of statutory deadlines, and most of them are counted in a way that catches people out — a deposit deadline that is 29 days rather than 30, a notice period set by whichever ground is longest, a certificate with no renewal date at all.

Most of these run the same code the Tenarize product runs, from a copy kept in step by a check that fails our build if the two disagree. The two that do not — landlord registration and HMO licensing, where the answer belongs to a government service or a council rather than to us — say so on the page. Use any of them without signing up for anything.

Section 8 notice period calculator

Pick the grounds you are citing and the date you serve, and see the earliest expiry date each one allows — and which of them is the binding one.

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Deposit protection deadline calculator

Enter the date the deposit reached you and see the last lawful day for both statutory duties — which is 29 days later, not 30, and that catches people out.

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Do you need to register on the landlord database?

Whether the Private Rented Sector Database applies to a property, when registration opens and closes in each of the nine English regions, what it costs, and which widely-quoted claims are not from the government at all.

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Certificate expiry date calculator

Pick a certificate and the date it was issued, and see when it lapses and the date to have the next visit booked by.

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Deposit cap calculator

The most you may lawfully take, from the rent - five weeks' or six, counted the way the Act counts a week rather than the way a calendar does.

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Late rent interest calculator

The maximum lawful rate today, on the current Bank of England base rate, and what has accrued on a late payment - including the fortnight at the start when nothing may be charged.

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Do you need an HMO licence?

Whether mandatory HMO licensing applies, counted on households rather than tenants - and why no answer here can tell you that you do not need a licence.

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Also free

Cost your letting agent out

Not a statutory deadline, but the other number landlords want before they commit to anything: what a full-management fee actually costs against doing it yourself, on your own figures.

Open the letting agent fee calculator