Louth follows Ireland-wide tenancy rules; there is currently no separate county deposit protection scheme. For most new tenancies, a landlord generally cannot seek more than one month’s rent as a deposit, and the deposit should be returned promptly after the tenancy ends unless a lawful deduction is being considered. Deductions may relate to rent arrears, unpaid bills, or damage beyond normal wear and tear, but the landlord should explain and support them with evidence. If you cannot agree, you can use the RTB dispute resolution process; the outcome depends on the individual facts.