Quick answer: A credit freeze is the strongest option and is free by federal law. It blocks new credit outright and lasts until you remove it. A fraud alert is weaker but easier: it asks lenders to verify your identity, lasts one year, and you place it at one bureau which notifies the other two. A credit lock works like a freeze with a faster toggle, but it is governed by a contract rather than by statute. For most people the freeze is the right default.
Key Takeaways
- Credit freeze is free by federal law, blocks new credit, and lasts until you lift it
- Fraud alert does not block anything; it asks lenders to verify identity for one year
- Credit lock is functionally similar to a freeze but governed by company terms, not statute
- You must freeze at all three bureaus separately; a fraud alert propagates automatically
- A freeze does not stop account takeover on cards you already have
Side by side
| Freeze | Fraud alert | Lock | |
|---|---|---|---|
| Cost | Free by law | Free by law | Free or bundled with paid monitoring |
| Blocks new credit | Yes | No, verification only | Yes |
| Duration | Until you lift it | 1 year (7 with theft report) | Until you unlock |
| Where to place | All three bureaus | One bureau notifies the rest | Each bureau’s app |
| Governed by | Federal law | Federal law | Company terms |
| Speed to lift | About an hour online | N/A | Seconds in an app |
The row that matters most is the last one about governance. A freeze is a statutory right, so the bureaus must honor it and cannot charge you. A lock is a product, and the terms can change.
What a freeze actually stops
People picture a wall that blocks everything. It is closer to a locked door with a doorbell.
When a lender pulls your report, the bureau returns a message saying the file is frozen rather than returning your history. Most automated underwriting treats that as an incomplete application and stops. Neither outcome hurts your score, and a decline caused by a freeze is not recorded the way a decline for poor credit would be.
What it does not cover matters too. Existing creditors can still review your file, so a card issuer can change your limit. Employers, landlords, and insurers may still access reports under permitted-purpose rules. And a freeze does nothing about account takeover: if someone has your existing card number, the freeze is irrelevant to that fraud. Our full guide to freezing your credit at all three bureaus covers the gaps and how to close them.
When a fraud alert is the better choice
A fraud alert does not block anything. It flags your file so lenders take extra steps to verify identity before opening an account.
That weakness is sometimes the point. If you apply for credit frequently and a freeze would mean constant lifting, an alert adds friction for thieves without adding much for you. It also propagates automatically, so one phone call covers all three bureaus.
The strongest version is the extended fraud alert, which lasts seven years and requires an Identity Theft Report from IdentityTheft.gov. If you have actually been a victim, this is worth doing in addition to a freeze rather than instead of one.
Why locks exist at all
Locks came from a real problem: freezing and unfreezing used to be slow and, before 2018, often cost money. Bureaus built app-based locks that toggle instantly.
Since freezes became free and can be lifted online in about an hour, the convenience gap has narrowed. What remains is a genuine speed advantage for people who apply for credit often.
The tradeoff is that a lock is a contract. Read what you are agreeing to, particularly whether the lock is bundled with a paid monitoring subscription that renews.
What to do this week
- Freeze at all three bureaus. Equifax, Experian, and TransUnion are separate; freezing one does nothing for the others.
- Save your credentials. Losing the PIN or account login is the most common reason people cannot lift a freeze when they need to.
- Add a fraud alert if you have been a victim. It is free and complements the freeze.
- Freeze your children’s files if they are under 16. Child identity theft often goes unnoticed for a decade.
- Lift all three before mortgage or auto shopping, since multiple lenders may pull different bureaus.
FAQ
Does a freeze hurt my credit score? No. It has no effect on your score.
Do I have to freeze at all three bureaus? Yes. They are separate companies and a freeze at one does not apply to the others.
Is a credit lock as good as a freeze? Functionally similar, but a freeze is protected by federal law while a lock is governed by the company’s terms.
Can I still use my existing cards with a freeze? Yes. A freeze affects new credit applications, not existing accounts.
How fast can I lift a freeze? Online lifts typically take about an hour, and you can lift temporarily for a set window.
Sources
Last updated: August 20, 2026. Written by the InfoBrief Editorial team. Rules change; confirm with the official source before acting. See our disclosure.