Ireland does not currently have a statutory deposit-protection scheme requiring Dublin landlords to lodge deposits with an approved provider. A landlord should hold the deposit safely and return it promptly when the tenancy ends, subject to reasonable deductions for rent arrears, unpaid bills, damage beyond normal wear and tear, or other agreed costs. Ask for an itemised explanation and supporting evidence, and keep the lease, payment record, photographs and inspection reports. If you cannot agree, either party can apply to the Residential Tenancies Board (RTB), which will assess the individual facts; consider legal advice for a complex dispute.