A letter of indemnity is a contract in which one party promises to reimburse another for specific losses, damages, or liabilities tied to a particular transaction or event. It shows up most often in shipping, mergers and acquisitions, lost-document replacement, and construction, where one side is being asked to take on a risk it wouldn’t normally accept and wants a written promise that the other side will absorb the fallout. A well-drafted LOI spells out exactly which losses are covered, for how long, and up to what dollar amount. A sloppy one can leave the party signing it exposed to open-ended liability, or leave the party relying on it with nothing collectible.
How a Letter of Indemnity Works
There are two core roles. The indemnitor makes the promise to cover losses. The indemnitee receives that protection. On larger transactions a third party, usually a bank or insurer, co-signs or guarantees the LOI so the indemnitee knows someone with real money stands behind it.
The exchange is straightforward. The indemnitee agrees to do something it would otherwise refuse, and the indemnitor agrees to cover the financial consequences if things go wrong. A shipping line asked to release cargo without seeing the original bill of lading takes on real exposure; the LOI from the receiver tells the carrier to hand over the goods anyway and promises to pay if a legitimate claimant appears later. Without that promise, the transaction doesn’t happen.
An LOI is not a guarantee. A guarantee creates a secondary obligation: the guarantor pays only if the primary debtor defaults. An LOI creates a direct, primary obligation. The indemnitor owes the money as soon as the covered loss happens, regardless of what any other party does or fails to do.
Where Letters of Indemnity Are Used
Shipping and Cargo Release
This is the highest-volume use and carries the sharpest risks. When cargo arrives but the original bill of lading hasn’t, the consignee faces storage fees and supply chain delays. The consignee issues an LOI asking the carrier to release the cargo without the original document, promising to indemnify the carrier against any later claims.1Maersk. Letter of Indemnity Release of Cargo Without Presentation of the Original Bill of Lading The risk is real: original bills of lading can still change hands after cargo has been released, and a carrier that delivers to the wrong party may face claims from the legitimate holder and find its own insurance compromised.2West of England P&I Club. Bills of Lading 2 – Letters of Indemnity Standard-form LOIs published by the International Group of P&I Clubs are the common currency here because carriers and insurers recognize the terms.
Replacing Lost Stock Certificates and Bonds
When a stock certificate, bond, or similar negotiable instrument is lost, stolen, or destroyed, the issuer worries that reissuing it exposes the company to a later claim from whoever shows up holding the original. An LOI from the certificate holder, often paired with a lost stock affidavit, indemnifies the issuer against any future claims tied to the original document.3U.S. Securities and Exchange Commission. Exhibit 16(a)(1)(iii) Lost Stock Affidavit
Construction
General contractors use LOIs to protect project owners against liens filed by unpaid subcontractors or suppliers, and against defects discovered after completion. The contractor promises to cover lien-related costs or repair bills tied to its work.
Mergers and Acquisitions
Purchase agreements almost always contain indemnification provisions that function the same way as a standalone LOI. The seller indemnifies the buyer against losses from inaccurate representations, undisclosed liabilities, or breaches of the agreement. These clauses are among the most heavily negotiated terms in any deal.
What Belongs in the Document
A vague LOI is barely worth the paper it’s printed on. Courts read these contracts strictly, and ambiguity tends to narrow the indemnitor’s obligation rather than expand it. The sections below are where drafting discipline matters most.
Parties and Scope
Identify the indemnitor, the indemnitee, and any third party by name and address. Describe the specific event or transaction triggering the obligation. A shipping LOI should name the vessel, the bill of lading number, and the exact cargo. Define what categories of loss are covered, and spell out what’s excluded.
Caps and Baskets
In high-value transactions, especially M&A, the indemnity obligation usually has financial guardrails. A cap sets the maximum the indemnitor will pay. Caps commonly land around 10% of transaction value for general claims, though the range runs from under 1% to the full purchase price depending on the deal. A basket works like a deductible: the indemnitee has to absorb a threshold of losses before the indemnitor pays anything. Some baskets act as true deductibles, where only losses above the threshold are recoverable; others “tip,” entitling the indemnitee to recover from the first dollar once the threshold is crossed.
Fraud and misrepresentation about fundamental facts, such as ownership or authority, are often carved out of these limits entirely. Sellers sometimes push to cap even fraud claims; buyers resist, for obvious reasons.
Duration
Every LOI should say how long the obligation lasts. In M&A this is called the survival period and functions as a private statute of limitations between the parties. Survival of 12 to 18 months after closing is typical for general representations. Fundamental representations often survive five to six years or track the applicable statute of limitations. Fraud claims typically get an indefinite or significantly extended period. In shipping, the major P&I club forms deliberately avoid any time limit, keeping protection as broad as possible for the carrier.
Governing Law and Signatures
Specify which jurisdiction’s law applies and whether disputes go to court or arbitration. This matters more than people assume. If the indemnitor and indemnitee sit in different countries, a judgment obtained in one may not be enforceable in the other without a treaty in place. Get original signatures from people with actual authority to bind each party.
Duty to Defend Is Not the Same as Duty to Indemnify
These two obligations look alike and operate differently. The duty to indemnify means paying for losses after they’ve been determined. The duty to defend means paying for the indemnitee’s legal defense as soon as a covered claim is filed, whether or not the claim ultimately succeeds. One kicks in at the back end, the other at the front.
Here is the practical trap. Standard language promising to cover “losses, damages, costs, and expenses arising from” an event does not automatically include the cost of enforcing the indemnity itself. If the indemnitor refuses to pay and the indemnitee has to sue to collect, recovering the legal fees from that enforcement action requires separate, explicit language. Without it, the American Rule applies and each side pays its own lawyers even if the indemnitee wins.
What You’re Taking On If You Sign One
In many industries LOIs get treated as routine paperwork. That casualness creates real exposure.
Uncapped Liability
An LOI without a cap is an open-ended financial commitment. The P&I club shipping forms are deliberately uncapped because the carrier needs broad protection. If you’re the indemnitor on one of those, your exposure is theoretically unlimited. Even in commercial deals where caps are standard, carve-outs for fraud and fundamental representations can swallow the cap entirely.
Conflict With Your Insurance
Signing an LOI can create friction with your own insurance policies. Many commercial policies contain subrogation clauses giving the insurer the right to recover from third parties who caused a covered loss. If you sign an LOI holding a third party harmless for the very losses your insurer might otherwise pursue, you may be impairing the insurer’s subrogation rights. Some policies treat that as a violation that reduces or voids coverage. Check your policy’s subrogation language before you sign anything.
The Fraudulent-LOI Trap in Shipping
An LOI used to obtain a “clean” bill of lading when the cargo is actually damaged or misdescribed is considered fraudulent. If a carrier knowingly issues a clean bill in exchange for an LOI, both sides have participated in a deliberate misrepresentation. The LOI becomes unenforceable because it was procured in support of an illegal act, and the carrier’s P&I coverage for the resulting claim is likely forfeited. The document that was supposed to provide protection is worthless at the moment it’s needed.
When a Court Won’t Enforce the LOI
Indemnity for Illegal Acts
An LOI covering losses from conduct that’s illegal or against public policy is void. You cannot contract around criminal or tortious behavior. The fraudulent clean-bill scenario above is the clearest example, but the principle runs across all industries. If the underlying action the LOI is meant to protect is unlawful, the promise collapses.
Anti-Indemnity Statutes
Forty-three states have enacted some form of anti-indemnity legislation, most of it aimed at construction contracts. These statutes limit or prohibit provisions that force one party to indemnify another for the other party’s own negligence. Scope varies: roughly 28 states bar indemnification for another party’s sole or partial fault, and 15 states only bar it for another party’s sole fault. An indemnity clause that violates these statutes is void regardless of what the parties signed.
In construction especially, a “broad form” indemnity clause requiring you to cover losses even when the other side was entirely at fault will not survive challenge in most states. “Limited form” clauses, which require indemnification only to the extent of your own negligence, hold up in the vast majority of jurisdictions.
Vague or Ambiguous Language
Courts construe ambiguous indemnity provisions narrowly. If the LOI doesn’t clearly describe the triggering event, the scope of covered losses, or the identity of the parties, the indemnitor’s obligation often ends up far smaller than the indemnitee expected. Every material term should be specific enough that a stranger reading the document could tell exactly who owes what, when, and under what conditions.
Bank Guarantees Behind the LOI
An LOI is only as strong as the indemnitor’s ability to pay. When the stakes are high, the indemnitee will often require a bank guarantee backing it. The bank agrees to pay on the indemnitee’s first written demand if the indemnitor fails to perform, which makes the guarantee essentially unconditional.4Hapag-Lloyd. Letter of Indemnity (and Bank Guarantee, If Applicable) Bank-backed LOIs are standard in international shipping for cargo releases without original bills of lading, particularly when the indemnitor is a smaller company or sits in a jurisdiction where enforcing a judgment would be difficult. Carriers and their insurers are far more willing to accept an LOI with bank backing, and in some cases won’t accept one without it. The cost to the indemnitor is real: banks charge fees for issuing these guarantees and usually require collateral or a credit facility.
Tax Treatment of Indemnity Payments
Indemnity payments have tax consequences on both sides, and the treatment depends on the nature of the underlying loss.
For the payer, an indemnity payment may be a deductible business expense if it’s directly related to the payer’s own trade or business. The IRS has made clear that the mere existence of a contractual obligation doesn’t make the payment deductible on its own. The expense must be “proximately and directly related” to the payer’s business, and a taxpayer generally cannot deduct the cost of someone else’s business expenses even when a contract requires the payment.5Internal Revenue Service. Deduction for Indemnification of Liability (IRS Memorandum 20132801F)
For the recipient, treatment depends on what the payment replaces. Payments reimbursing a deductible business loss are generally taxable income. Payments tied to physical injury or sickness may qualify for exclusion under IRC Section 104. For fixed-indemnity insurance benefits, the IRS has stated that benefits are not taxable if the policyholder paid premiums with after-tax dollars but are includible in income to the extent they exceed unreimbursed medical expenses when premiums were paid pre-tax.6Internal Revenue Service. IRS Memorandum 202323006 Because the result can swing significantly on the facts, anyone receiving a substantial indemnity payment should talk to a tax professional before filing.