ICO (Information Commissioner's Office)
Quick answer
The UK data protection regulator. Landlords who process tenant data (names, ID copies, bank details) are data controllers under UK GDPR and may need to pay the ICO's data protection fee. A privacy notice to tenants is required.
At a glance
- Role
- UK data protection regulator
- Landlord status
- Data controllers under UK GDPR
- Fee
- Tiered annual ICO fee (usually £40–£60 for landlords)
- Required
- Privacy notice to tenants
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Open full guideWhy ICO (Information Commissioner's Office) matters for landlords
Most landlords hold tenant ID documents, bank details and referencing data — that makes them data controllers under UK GDPR and they should be registered with the ICO and paying the annual fee. The fee is small but non-payment is a civil penalty; more importantly, tenant subject-access requests come up in end-of-tenancy disputes and the landlord needs a proper privacy notice on record to respond defensibly.
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Official sources
LetCompliance editorial reviews this entry every quarter against the sources above. Always confirm specific duties with a qualified solicitor or your local council.
Related terms
Immigration Act 2014
The Act that created Right to Rent, requiring landlords in England to check every adult occupier has the legal right to rent in the UK. Civil penalties for failing to check reach up to £10,000 per occupier for a first breach and £20,000 for a repeat breach; knowingly renting to a disqualified person is a criminal offence (unlimited fine, up to 5 years).
Improvement Notice
A formal notice served by the local housing authority under section 11 (Category 1 hazard) or section 12 (Category 2 hazard) of the Housing Act 2004 requiring a landlord to remedy hazards identified through the Housing Health and Safety Rating System (HHSRS). The notice specifies the works, the deadline and the route of appeal to the First-tier Tribunal. Failure to comply is a criminal offence with civil penalty up to £30,000, and triggers a 12-month Rent Repayment Order window.
Inheritance Tax (IHT)
A tax on the value of an estate on death, charged at 40% above the tax-free threshold. Rental property counts in the estate at its market value less any outstanding mortgage. The nil-rate band is £325,000, with a further residence nil-rate band potentially available when a main home passes to direct descendants.
Interest Coverage Ratio (ICR)
The rental stress test buy-to-let lenders use to decide how much they will lend. It measures whether the rent covers the mortgage interest by a required margin — commonly 125% for basic-rate borrowers and 145% for higher-rate borrowers — tested at a notional stressed interest rate rather than the actual pay rate.
Interest-Only Mortgage
A mortgage where the monthly payment covers only the interest, leaving the original capital to be repaid at the end of the term. Most buy-to-let mortgages are interest-only because it maximises monthly cashflow and, historically, the tax treatment of interest. The capital must still be repaid eventually — usually by selling or remortgaging the property.
Inventory (Inventory Clerk)
The detailed, photographed schedule of the property’s condition and contents at the start of a tenancy, used as the comparison baseline at check-out for deposit deductions. A professionally prepared inventory by an APIP / AIIC-accredited inventory clerk costs typically £80–£200 depending on property size and is the strongest evidence base for the DPS, TDS or mydeposits adjudication process. The Renters Rights Act 2025 strengthens tenant rights to challenge unfair deductions, raising the evidentiary bar for landlords.