A tenancy deposit scheme (TDP) is a government-approved scheme that protects the deposit you pay when you rent a home. In England and Wales, if you have an assured shorthold tenancy, your landlord or letting agent is legally required to protect your deposit in one of these schemes within a set time of receiving it.
Deposit protection was introduced to stop the once-common problem of landlords unfairly withholding deposits at the end of a tenancy. The scheme holds (or insures) your money and provides a free dispute resolution service if you and your landlord disagree over deductions when you move out.
When you move in, confirm your deposit has been protected and ask which scheme holds it (you should be given this in writing). Note the condition of the property with photos and an inventory so deductions can be fairly judged later. Scotland and Northern Ireland have their own equivalent schemes. This is general information, not legal advice; check the rules for your area on GOV.UK, and Citizens Advice can help with disputes. Our rental deposit checklist and rental checklist may help.