Credit Freeze vs. Credit Lock: What's the Difference?

If you've been the victim of a data breach, or you simply don't plan to apply for new credit any time soon, locking down your credit report is one of the most effective ways to prevent identity theft. The two tools for doing this — a credit freeze and a credit lock — sound interchangeable, and they accomplish nearly the same goal, but they aren't identical. Knowing the difference helps you pick the right one, or use both.

What Is a Credit Freeze?

A credit freeze (also called a security freeze) restricts access to your credit report. When your file is frozen, lenders can't pull your report to approve a new credit card, loan, or line of credit in your name — which means an identity thief can't open new accounts using your information, even if they have your Social Security number.

Freezes are governed by federal law. Since 2018, all three credit bureaus are required to offer freezes for free, and you can freeze or "thaw" (temporarily lift) your freeze online, by phone, or by mail within one hour for online requests.

What Is a Credit Lock?

A credit lock does essentially the same thing — it prevents lenders from accessing your report — but it's a proprietary product offered directly through each bureau's own app or website (Equifax Lock, Experian's lock feature, TransUnion's TrueIdentity). Locks are designed for convenience: you can toggle them on and off instantly from a mobile app, without the sometimes-clunky PIN or password recovery process that freezes can involve.

Some lock features are bundled into paid credit monitoring subscriptions, though each bureau also offers a basic free lock option.

Credit Freeze vs. Credit Lock: Side-by-Side

What Neither One Does

It's worth being clear about the limits of both tools:

• They don't stop existing creditors from reviewing your account (for a credit line increase or periodic review).
• They don't affect your credit score — freezing or locking your file has zero score impact.
• They don't stop debt collectors, insurers, or employers in every case — certain "permissible purpose" checks (like a landlord's tenant screening or an existing lender's account review) can still go through in some setups.
• They don't protect an existing account from being misused — you still need to monitor statements for unauthorized charges.

How to Freeze Your Credit (Step by Step)

1. Go to each bureau's freeze page: Equifax, Experian, and TransUnion.
2. Create an account or verify your identity with personal details.
3. Request the freeze — you'll receive a confirmation and a PIN or password to manage it later.
4. Store your PINs somewhere safe; you'll need them to thaw your freeze when you actually apply for credit.
5. Repeat at all three bureaus, since lenders may pull from any one of them.

Freezing your credit is free, reversible, and one of the few security steps with essentially zero downside. If you're not actively applying for credit, there's little reason not to freeze your file at all three bureaus.

Which Should You Use?

For most people, a credit freeze is the stronger choice because it carries federal legal protections and never costs money. A credit lock can be a good supplement if you frequently open and close access — for example, if you shop for financing often and want a one-tap way to toggle access from your phone. Many security-conscious consumers simply keep a freeze in place year-round and thaw it only when applying for new credit.

Next Steps

Related guides:

• How to dispute errors on your credit report
• Credit report vs. credit score: key differences
• Hard vs. soft credit inquiries explained
• How long negative items stay on your report