A letter of indemnity for a bank is a contract in which you promise to reimburse the bank for any losses, claims, or legal costs it incurs by carrying out a request that falls outside its normal risk tolerance. Banks ask for one when you want them to do something they would otherwise refuse: replace a lost cashier’s check, deposit a check that’s more than six months old, try to recall a wire you sent in error, or release payment under a letter of credit despite paperwork that doesn’t quite match. Signing shifts the financial risk from the bank to you.
Why the Bank Is Asking
Banks run on conservative policies. When your request creates a possibility of loss the bank can’t eliminate on its own, it has two choices: refuse, or get you to agree in writing to cover the loss if it happens. The letter of indemnity (LOI) is that written agreement. You are the indemnitor; the bank is the indemnitee. Once signed, the document sits in the bank’s file and can be enforced against you if things go wrong.
The most frequent triggers are these:
- A lost or stolen cashier’s check, teller’s check, or certified check. Because the bank itself guarantees these instruments, whoever holds the original can present it for payment. If the bank issues you a replacement and the original later surfaces in good hands, the bank pays twice unless you reimburse it.
- A stale-dated check. A bank is not obligated to honor a personal check presented more than six months after its issue date. If the bank credits your account and the check bounces, it wants you on the hook for the clawback.1Cornell Law School. Uniform Commercial Code 4-404 – Bank Not Obliged to Pay Check More Than Six Months Old
- A wire transfer recall. Once a wire clears, the receiving bank is not required to send the money back. If you want your bank to try, it will usually require an LOI covering any costs or losses from the attempt.
- A trade-finance payment under a letter of credit. The bank must dishonor payment if the seller’s documents don’t match the credit’s terms. A buyer’s LOI can authorize the bank to release payment despite minor discrepancies, with the buyer taking on any downstream dispute.2Cornell Law Institute. Uniform Commercial Code 5-108 – Issuers Rights and Obligations
- A lost stock or bond certificate. The issuer or its transfer agent will require an indemnity agreement before issuing a replacement, since the original is still out there.3SEC.gov. Exhibit 16(A)(1)(III) Lost Stock Affidavit
For lost cashier’s, teller’s, and certified checks, the Uniform Commercial Code also gives you a statutory path. You file a written declaration of loss under penalty of perjury, and your claim becomes enforceable 90 days after the date on the check (or, for a certified check, 90 days after the bank accepted it).4Cornell Law Institute. Uniform Commercial Code 3-312 – Lost, Destroyed, or Stolen Cashiers Check, Tellers Check, or Certified Check The LOI runs alongside that statutory obligation and typically expands it to include the bank’s legal costs if a dispute arises.
What You Are Actually Agreeing To
The indemnification clause is the heart of the document. In it, you promise to reimburse the bank for losses, liabilities, and legal fees arising from the transaction you asked it to carry out. The language is usually broad. A lost cashier’s check LOI, for example, covers not just the face amount of a duplicate payment but also the bank’s costs of defending any claim brought by whoever ends up holding the original.
Read the scope carefully. Some LOIs cap your exposure at a specific dollar figure. Others leave it open-ended, meaning you owe whatever the bank ends up losing, with no ceiling. If the form is open-ended and the underlying transaction is small, that may still be acceptable; if the transaction is large or the facts are uncertain, an uncapped indemnity is a real commitment.
If you are signing for a business, the bank will typically require a corporate resolution or similar document showing you have authority to bind the entity. Without that proof, the bank cannot enforce the LOI against the company, and most banks will not proceed.
What the Document Contains
Most banks use their own standard form. A typical letter of indemnity includes:
- Your full legal name and address and the bank’s legal name.
- A specific description of the transaction, with identifying details such as a check number, amount, date, and payee.
- The indemnification clause itself.
- Any scope limits or dollar caps on your liability.
- Your signature, often notarized.
For securities-related indemnities, the bank or transfer agent will usually require a Medallion Signature Guarantee rather than a notary stamp. A Medallion is a stamp from a specially authorized bank or broker-dealer employee confirming your identity and guaranteeing your signature, with the financial institution accepting liability for any forgery. Only participants in a recognized Medallion program can provide it, and most will stamp only for their own customers. If you are not already a customer, expect to open an account before the replacement process can move.
How You Sign and Submit It
Banks generally expect in-person submission at a branch, where staff can check your ID. If notarization is required, many branches have a notary on staff. Notary fees are set by state law and typically fall between $2 and $25 per signature, with a handful of states not capping the fee.
Electronic signatures are permitted on indemnity agreements under federal law.5National Credit Union Administration. Electronic Signatures in Global and National Commerce Act (E-Sign Act) Whether your bank accepts one depends on its own policies. For a time-sensitive matter, ask whether the LOI can be completed through the bank’s secure online portal or a service like DocuSign.
When the Bank Wants a Bond Instead
For large-dollar lost instruments, your signature alone may not satisfy the bank. Many institutions require a surety bond, often called a lost instrument bond, purchased from an insurance company. The bond guarantees repayment even if you can’t cover the loss personally. Premiums typically run 1% to 5% of the instrument’s face value, with minimums around $100. On a $50,000 lost cashier’s check, that works out to roughly $500 to $2,500.
The threshold where a bank shifts from a plain LOI to requiring a bond varies. Some banks require bonds on any cashier’s check replacement above a few thousand dollars. Others weigh your account history, relationship, and creditworthiness. If a bond is needed, you apply through a surety company, and the process can add days or weeks to the timeline.
How Long Your Liability Lasts
Most bank LOIs have no expiration date. Your obligation lasts as long as the underlying risk exists, which in practice often means indefinitely. A lost cashier’s check could surface years after you received the replacement. Unless the form explicitly caps the duration, assume your exposure continues.
State statutes of limitations on written contracts eventually bar enforcement, usually somewhere between four and ten years, but the clock generally starts when the bank actually suffers the loss, not when you signed. A bank that discovers a duplicate payment seven years later could still be within its window, depending on state law.
When an LOI May Not Be Enforceable
An LOI is a contract and can be challenged on the usual grounds: fraud, misrepresentation, or unconscionability. If the bank obtained your signature with false information, or the terms are so one-sided no reasonable person would agree, a court may refuse to enforce it.
In trade finance, LOIs used to cover up known misrepresentations have been struck down as unenforceable on public-policy grounds. Issuing a “clean” bill of lading for cargo known to be damaged, with an LOI as backup, can void the protection entirely and leave the party relying on it exposed. The limit is narrow but worth understanding: an LOI protects against honest mistakes and unforeseen outcomes, not deliberate deception.
Before You Sign
You are not required to sign on the spot. If the indemnification clause has no dollar cap, or the language is broader than the transaction seems to warrant, ask the bank three things: what specific losses the LOI covers, whether there is a maximum exposure amount, and how long the obligation lasts. Get the answers in writing where you can. For high-value transactions, a short consultation with an attorney before you sign is usually worth the fee.