Injunction bonds are the security a plaintiff must post under Federal Rule of Civil Procedure 65(c) before a court will issue a preliminary injunction or temporary restraining order, in whatever amount the court considers sufficient to pay the costs and damages the defendant would suffer if the restriction turns out to be unjustified.1Federal Rule of Civil Procedure 65(c) The bond exists because an injunction is a powerful order issued before anyone has proven their case, and the restrained party deserves a financial backstop if the court later decides the order should not have been entered. State courts use similar frameworks, though the specific rules and recovery standards vary.
How Courts Set the Amount
The bond amount is the court’s best estimate of what the defendant stands to lose while the injunction is in force. Judges work from concrete financial evidence, not abstract claims of harm. The plaintiff typically presents realistic projections; the defendant counters with evidence of anticipated losses; the court lands on a figure meant to cover the plausible worst case.
The losses that go into that figure include fixed overhead that keeps running even when operations stop. Rent, payroll, insurance premiums, and equipment leases don’t pause because a court order shuts down a business. If an injunction halts a construction project, the court factors in contractual penalties and idle equipment costs. Prior-year revenue data helps the judge estimate lost profits, and a seasonal business may draw a higher bond if the injunction coincides with its peak earning period.
Duration matters. A case headed for a two-week bench trial creates different exposure than one requiring eighteen months of discovery. Judges try to predict how long the restriction will stay in place and scale the bond accordingly. If litigation grows more complex than expected, the defendant can petition to increase the bond, and waiting too long to ask is a costly mistake because recovery is generally limited to the bond’s face value.
When Courts Waive or Reduce the Bond
The federal government has a blanket exemption. Rule 65(c) states that the United States, its officers, and its agencies are not required to give security when seeking injunctive relief.1Federal Rule of Civil Procedure 65(c) The assumption is that the government can satisfy any eventual judgment and that a bond requirement would hamper enforcement of federal law.
For private litigants, the rule’s language — “in an amount that the court considers proper” — gives trial judges wide latitude, including the power to set a nominal bond or waive security entirely. Several circuits treat that discretion as settled. Nominal bonds show up most often when a plaintiff is indigent and a substantial bond would effectively block access to injunctive relief, when a nonprofit or public interest organization sues and the defendant’s potential harm is speculative, and when the case involves constitutional rights where a financial barrier would be inappropriate. A court weighing a reduction looks at the strength of the plaintiff’s case, the defendant’s actual exposure, and whether a full bond would prevent a meritorious claim from going forward.
Surety Bond or Cash Deposit
Courts accept two main forms of security. Which one a plaintiff chooses depends on cash flow and the size of the bond.
Corporate Surety Bonds
A corporate surety bond is a three-party arrangement. The plaintiff, called the principal, pays a premium to a surety company, which then guarantees the court it will pay the bond amount if the defendant is entitled to recover. The premium typically runs between one and three percent of the face value per year, with the exact rate depending on the plaintiff’s creditworthiness and the surety’s risk assessment.
Not every insurer qualifies. In federal court, sureties must hold a certificate of authority from the Secretary of the Treasury and must fall within the underwriting limits set by Treasury Department Circular 570. The Bureau of the Fiscal Service publishes the current list of certified companies, and parties can verify a surety’s authorization through its website. The surety’s bonding agent must also file a power of attorney with the court to prove authority to bind the company.
One detail plaintiffs overlook is the indemnity agreement. Before issuing the bond, the surety requires the plaintiff to promise reimbursement for any payments made on it. If the injunction turns out to be wrongful and the surety pays the defendant, the plaintiff owes that money back, often with interest and the surety’s legal costs on top. On larger bonds, the surety may also demand collateral.
Cash Deposits
The alternative is depositing the full bond amount in cash with the court clerk, where it stays until the judge orders release. A cash deposit avoids the premium and the indemnity obligation, but it ties up capital for the duration of the litigation. For a six-figure bond in a two-year case, that is a serious liquidity hit, and most litigants with access to surety markets go that route instead.
What Counts as “Wrongfully Enjoined”
The defendant’s right to recover on the bond only arises if it was “wrongfully enjoined or restrained” within the meaning of Rule 65(c). The rule doesn’t define the phrase, and courts have taken different approaches.
The clearest scenario is a final judgment in the defendant’s favor. If the court ultimately decides the plaintiff was not entitled to the injunction, whether because the underlying claim fails or because the equitable factors didn’t support relief, the defendant has a strong basis to recover. A dissolved preliminary injunction, particularly one dissolved because the court reassessed the plaintiff’s likelihood of success, also supports a wrongful-injunction finding.
Losing the case doesn’t automatically mean the injunction was wrongful. Some courts distinguish an injunction that was reasonable when issued but ultimately incorrect from one that should never have been granted. The defendant has to show more than a favorable outcome; the focus is on whether the restriction lacked legal justification. The analysis is fact-specific, and outcomes vary between circuits. The defendant must also show the injunction actually caused harm while in force. A restriction that technically bound the defendant but had no practical impact on operations won’t support a meaningful recovery, even if the court later dissolves it.
What the Defendant Can Recover
Once wrongful enjoinment is established, recovery focuses on direct financial losses traceable to the restriction. Speculative or remote damages don’t qualify.
Lost Profits
Lost profits are the most common category. A retailer shut out of its store during a holiday season can claim the difference between projected and actual revenue, provided the projections rest on solid evidence like historical sales data and existing purchase orders. A manufacturer blocked from filling contracts can recover the margins it would have earned. Documentation is the key: tax returns, financial statements, contracts, and customer records all help establish what the business would have earned without the restriction.
Out-of-Pocket Costs
Defendants can recover expenses directly attributable to the injunction. Storage fees for seized inventory, costs to maintain idle equipment, rent on unusable commercial space, and similar ongoing obligations all qualify. If the injunction prevented use of real property, the defendant may recover its fair rental value for the restricted period.
Attorney Fees
Attorney fees occupy an awkward middle ground. Most federal courts treat the bond as covering direct economic losses but not litigation expenses, unless a separate statute or contractual provision authorizes fee-shifting. Some courts allow limited recovery of fees spent specifically on dissolving the injunction, distinguishing that work from the broader litigation. As a general rule, a defendant should not count on recovering legal bills from the bond.
Duty to Mitigate
A wrongfully restrained defendant can’t sit idle and let damages accumulate. Courts expect ordinary steps to limit losses: finding alternative revenue sources, renegotiating contracts, reducing unnecessary expenses. Damages that could have been avoided through reasonable effort generally are not recoverable, even when the injunction was clearly wrongful.
The Bond as a Ceiling on Recovery
This is where injunction bonds set a trap for unwary defendants. In most circuits, the bond’s face value is a ceiling on what the defendant can collect. If the court set the bond at $50,000 but the defendant suffered $200,000 in losses, the defendant recovers $50,000. The Seventh Circuit stated this clearly, holding that the bond amount limits recovery even directly from the plaintiff, so long as the plaintiff brought the case in good faith.
That cap makes the initial bond-setting hearing critically important for defendants. Underestimating potential harm at that stage can permanently limit recovery. A defendant watching losses pile up past the bond should move to increase the security as early as possible. Courts do grant mid-litigation increases; in one case, a district court retroactively raised a bond to $4.95 million to cover two years of compliance expenses on an injunction that was later dissolved.
The Bad Faith Exception
The cap has a potential escape valve. When a plaintiff seeks an injunction in bad faith or with malicious intent, courts have recognized that the defendant may pursue damages beyond the bond amount. The Seventh Circuit acknowledged that possibility while declining to define its exact boundaries, noting that a defendant facing a bad-faith injunction might seek additional damages through a Rule 65 motion or a separate malicious prosecution action. Because the plaintiff in that case had acted in good faith, the $5,000 bond was the ceiling.
Proving bad faith is a high bar. A plaintiff who believed in good faith that it had a viable claim, even one that ultimately fails, won’t trigger the exception. It targets litigants who used the injunction process as a weapon to harass a competitor, delay a business rival, or extract a settlement, rather than to protect a legitimate legal interest.
How Collection Works
Recovery begins after the underlying case concludes or the court dissolves the injunction and finds it wrongful. The defendant files a motion detailing damages and requesting payment from the bond, with supporting evidence: financial records showing lost revenue, invoices for costs incurred, and documentation linking each loss to the restriction. The court reviews the claimed amounts for reasonableness and causation. Not every expense during the injunction period qualifies automatically; the defendant has to show each item resulted from the restriction rather than from ordinary business conditions or unrelated factors.
After the judge approves a recovery amount, the mechanics depend on how the security was posted. A surety company requires a copy of the court’s final order before releasing payment, pays the defendant up to the bond amount, and then looks to its indemnity agreement with the plaintiff for reimbursement. If the security was a cash deposit, the clerk disburses the approved amount directly to the defendant. Either way, expect some processing time between the court’s order and actual receipt of funds; surety companies in particular may take several weeks to complete payment after receiving the order.