Answer
A typical rental deposit in Uruguay is 3 to 6 months' rent; figures of 3–4 months or about 5 months' rent are often cited. It is not a single fixed amount that can be applied to every property.
A deposit is not a universal minimum for all transactions. The amount depends on the owner, the contract, the furnishings, the chosen guarantee, and the tenant's profile, especially if a foreigner has no local income history or verifiable payment history.
It is important to understand where the money is held, in whose name the account is opened, who receives the interest, and under what conditions the deposit is returned. A large sum should not be transferred without a contract, confirmation of where the funds are held, and a clear procedure for its return after you have fully moved out.