A refundable hold or charge collected before a rental begins, returned after the item comes back undamaged and on time.
A security deposit is money collected from the customer before they take possession of a rental item. It acts as a financial guarantee that the item will be returned in the same condition it left. If everything goes well, the deposit is refunded in full. If the item comes back damaged, late, or not at all, the deposit covers part or all of your losses.
Security deposits can be structured as either a charge (actual money taken from the customer) or an authorization hold (a temporary block on their credit card that is released later). Authorization holds are more customer-friendly because the money never actually leaves their account. However, holds expire after a set period (typically 7-14 days depending on the card issuer), so they work best for short-term rentals.
Setting the right deposit amount is a balancing act. Too low and it does not cover potential damage, leaving you exposed. Too high and it discourages customers from booking. A general rule of thumb is to set the deposit at 25-50 percent of the item replacement cost. A $2,000 trailer might have a $500-$1,000 deposit. A $300 bounce house might require a $75-$150 deposit.
The biggest operational challenge with deposits is the refund process. Customers expect their deposit back quickly - within 24-48 hours of returning the item. If your inspection process is slow or your refund workflow is manual, frustrated customers start calling and leaving bad reviews. Automate this as much as possible: inspect the item at return, approve the refund in your system, and let the payment processor handle the rest.
A common mistake is not documenting the item condition at both checkout and return. Without a condition report, deposit disputes become he-said-she-said arguments. Take photos or have the customer sign a condition acknowledgment when they pick up and return the item.
Some rental businesses are moving away from traditional deposits entirely, replacing them with damage waivers or requiring rental insurance instead. This reduces the payment friction at checkout while still protecting your assets.
Security deposits protect your most valuable business assets - your rental inventory. Without them, you bear the full financial risk of damage, theft, or loss every time an item goes out the door.
A construction equipment rental company places a $1,000 authorization hold on a customer credit card for a mini excavator rental. The customer returns the excavator with a cracked windshield. The company charges $650 against the hold for the repair, releases the remaining $350, and sends the customer a detailed invoice showing the damage and repair cost.
14-day free trial. No credit card required. We build it for you.
Learn about security deposits for rentals