Security for Costs Law and Legal Definition

Security for costs is the money, property, or a bond given to a court by a plaintiff or an appellant to secure the payment of court costs if that party loses.

Where a defendant has a reasonable apprehension that its legal costs will not be paid for by the plaintiff if the defendant is successful, the defendant can apply to the court for an order that the plaintiff provide security for costs. If the defendant is successful, the money can be applied against the costs order. If the claimant is successful, the security is returned to the claimant.