The holding method matters more than the headline figure, because it decides how exposed your money is between booking and refund. There are three patterns, and they are not equally good for the renter.
Credit card pre-authorisation
The best outcome for a renter. The manager places a hold on your card, the funds never leave your account, and the hold lapses on its own, usually within a few days of checkout, if no claim is made. It is the Caribbean norm and increasingly common in Europe. The only catch is that the hold counts against your card limit for the stay, so a €50,000 authorisation needs headroom.
Agency-held bank transfer
The European default for larger sums. You wire the deposit to the management company before arrival and they return it after the inventory. This is fine with a reputable firm, but the money is genuinely out of your hands, so two clauses matter: the refund window in days, and a requirement that the funds sit in the company's client or business account. Never send a deposit to a personal account.
Third-party escrow
The strongest protection and the rarest in Europe. A neutral third party, often a lawyer or a broker's escrow account, holds the deposit and releases it on instruction from both sides. It is the United States norm through licensed brokers and worth asking for on a very large deposit anywhere, since it removes the manager's discretion over your money.
The damage waiver alternative
Many platforms now offer a non-refundable damage waiver in place of a deposit, typically 1 to 3 percent of the rate or a flat €150 to €1,500. It covers accidental damage up to a cap and means no large sum is tied up. The trade-off: it does not cover negligence or gross misuse, which still fall back on you, and on a low-risk stay you are paying for cover you may not need.