What Is an Identity Theft Affidavit?

Updated July 9, 2026 5 min read

Saying that an account isn’t yours is a claim. Putting it in writing, with specifics and a signature, is what starts turning that claim into something creditors and credit bureaus can actually process.

The short answer

An identity theft affidavit is a formal statement, often on a standardized form, in which someone documents that specific accounts or transactions were opened or made fraudulently using their identity. It’s typically required as supporting evidence when removing a fraudulent account from a credit report or disputing charges with a creditor. The affidavit itself doesn’t resolve the fraud, but it gives institutions a documented, sworn basis to act on the claim rather than an informal phone call.

What it usually asks for

Most identity theft affidavits ask for a similar set of details: which accounts or transactions are being disputed, roughly when the fraud is believed to have occurred, whether the person has any idea how their information was obtained, and a statement affirming the information provided is accurate. Some versions are general-purpose, while others — like the ones used for tax-related identity theft — are specific to a particular type of fraud and ask more targeted questions.

When one is typically requested

Why the specifics matter

An affidavit that’s vague — “someone used my information” without naming accounts, dates, or amounts — tends to slow the process down rather than speed it up, because the institution reviewing it can’t act on generalities. Being as specific as possible about which accounts, which transactions, and roughly when the activity occurred gives whoever is processing the affidavit something concrete to check against their own records.

How it fits into the bigger picture

An affidavit is one document in a process that often involves several separate steps: contacting the creditor directly, notifying the credit bureaus, and in some cases involving law enforcement. It supports those other steps rather than replacing any of them — a completed affidavit paired with a dispute is generally stronger than either one alone, since it gives the receiving institution a documented account of what’s being claimed and why.

Where this leaves you

An identity theft affidavit is best thought of as documentation infrastructure — not the resolution itself, but the paperwork that makes the resolution possible. Filling it out carefully, with as much specific detail as can be gathered, tends to move the underlying dispute forward faster than treating it as a formality to get through quickly.