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 they are willing to help you, but only if you take the financial risk off their books. The most common triggers are replacing a lost cashier’s or certified check, depositing a check more than six months old, recalling a wire, or releasing funds under a letter of credit with paperwork that does not quite match. Once you sign, the bank moves forward. If something goes wrong later, you pay.
What You Are Actually Agreeing To
The mechanics are simple, and the consequences are not. You are the indemnitor, the bank is the indemnitee, and your signature converts the bank’s risk into your risk. If the bank ends up paying twice on a replaced check, you owe the bank the duplicate payment. If a recalled wire cannot be clawed back from the recipient, you cover the loss. If a stale check bounces after the bank credited your account, you refund the credit.
This is not a waiver or a formality. It is a legally binding promise the bank keeps on file and can enforce against you personally, or against your business if you signed in a corporate capacity. Banks that require an LOI for a business transaction will usually also ask for a corporate resolution or similar document proving you have authority to bind the company. Without that proof, the bank cannot enforce the LOI against the entity, and most will not proceed.
When a Bank Will Ask for One
Lost or Stolen Cashier’s, Teller’s, or Certified Checks
This is the situation most consumers encounter. Cashier’s checks, teller’s checks, and certified checks are guaranteed by the bank, so whoever holds the original paper can present it for payment. If you lose one and want a replacement, the bank faces the real possibility of paying twice.
Under the Uniform Commercial Code, you file a claim by giving the bank a written declaration of loss under penalty of perjury, stating that you lost the check, did not transfer it to anyone else, and cannot reasonably recover it. Your claim does not become enforceable until 90 days after the date on the check (or, for a certified check, 90 days after the bank accepted it).1Cornell Law Institute. Uniform Commercial Code 3-312 – Lost, Destroyed, or Stolen Cashiers Check, Tellers Check, or Certified Check The bank uses that window to see whether the original surfaces. The LOI you sign reinforces the statutory obligation and typically expands it to include the bank’s legal costs if a dispute arises later. If the original check turns up years down the road and a legitimate holder cashes it, you owe the bank.
Stale-Dated Checks
A bank has no obligation to honor a personal check presented more than six months after its issue date.2Cornell Law School. Uniform Commercial Code 4-404 – Bank Not Obliged to Pay Check More Than Six Months Old Many banks will still process the deposit if you sign an LOI agreeing to reimburse them if the check comes back unpaid. The issuer may have stopped payment, closed the account, or simply not kept enough in it. If the check bounces, the bank pulls the money back from you.
Wire Transfer Recalls
Once a wire clears, the sending bank has no automatic right to reverse it. If you sent funds to the wrong account, your bank can ask the receiving bank to return the money, but the receiving bank does not have to comply. Before initiating the recall, your bank will usually require an LOI covering any costs or losses it incurs in the attempt. If the recipient disputes the recall or has already withdrawn the money, that loss lands on you.
Letters of Credit and Trade Finance
If you deal in international trade, an LOI can authorize a bank to release payment under a letter of credit even when the shipping documents contain a minor discrepancy the bank would otherwise have to reject.3Cornell Law Institute. Uniform Commercial Code 5-108 – Issuers Rights and Obligations You accept responsibility if the mismatch later triggers a dispute. Trade-side LOIs also come up when a carrier releases cargo without an original bill of lading against the shipper’s indemnity. These are specialized uses; the risk allocation is the same idea as a lost-check LOI, just applied to shipping documents instead of a piece of paper you dropped in the mail.
Lost Stock or Bond Certificates
Worth flagging so you don’t assume your bank handles it: replacing a physical securities certificate goes through the issuing company or its transfer agent, not your bank, and typically requires a Medallion Signature Guarantee rather than a standard notarization.4SEC.gov. Exhibit 16(A)(1)(III) Lost Stock Affidavit The indemnity concept is identical, but the counterparty is different.
What to Read Before You Sign
Most banks use a standardized form. The details still matter, and a few clauses are worth pausing on:
- Party identification: your full legal name and address, plus the bank’s legal name.
- Transaction description: the specific request that triggered the LOI. For a lost check, that means the check number, amount, date, and payee. Errors here can create problems later.
- Indemnification clause: the core promise to reimburse the bank for losses, liabilities, and legal fees arising from the transaction.
- Scope or cap: some LOIs cap your exposure at a specific dollar amount; others are open-ended and cover any and all losses without a ceiling. This is the single most important line to read.
- Duration: most bank LOIs do not include an expiration date, which means your obligation lasts as long as the underlying risk does.
- Signature and, where required, notarization or a Medallion guarantee.
You are not required to sign on the spot. If the indemnification clause has no dollar cap or the language seems unusually broad, ask the bank what specific losses are covered, whether there is a maximum exposure, and how long the obligation runs. For a high-value transaction, a short attorney consultation before signing is reasonable.
When the Bank Wants a Bond Instead
For large lost instruments, your signature alone may not satisfy the bank. Many will require a surety bond, sometimes called a lost instrument bond, purchased from an insurance company. The bond guarantees the bank gets paid back even if you cannot cover the loss yourself. Premiums typically run 1% to 5% of the check’s face value, with minimums around $100. On a $50,000 lost cashier’s check, expect a bond premium of roughly $500 to $2,500.
The threshold where a bank switches from LOI to bond varies. Some require a bond for any cashier’s check replacement above a few thousand dollars. Others look at your account history, relationship with the bank, and credit. Applying through a surety company can add days or weeks to the timeline, so it is worth asking about upfront if the amount is substantial.
How Long You Stay on the Hook
Assume your exposure is indefinite unless the LOI says otherwise. A lost cashier’s check could surface years after you received the replacement. That said, the bank cannot wait forever to enforce the LOI once it takes a loss. Statutes of limitations on written-contract claims typically run four to ten years depending on the state, and the clock generally starts when the bank actually suffers the loss it wants you to cover, not when you signed. A duplicate payment discovered seven years later can still be within the enforcement window in many states.
When an LOI May Not Hold Up
An LOI is a contract, and contracts can be challenged. The usual grounds are fraud, misrepresentation, and unconscionability. If the bank induced your signature with false information, or the terms are so lopsided that no reasonable person would agree to them, a court may refuse to enforce it.
The clearest limit shows up in trade finance. Courts in some jurisdictions have refused to enforce LOIs used to cover a known misrepresentation, such as signing a “clean” bill of lading for cargo the shipper knew was damaged. An LOI protects the bank or carrier against honest mistakes and unforeseen outcomes. It does not launder deliberate deception, and using one that way can leave the party holding it with no protection at all.