For a lot of people, the first sign is a tax form. A 1099-K from Block, Inc. lands in the mail or your inbox, reporting thousands of dollars in payments through a Cash App account you’ve never touched. Others find out when a debt collector calls, or when they try to open their own Cash App and get told the account already exists. Either way, the message is the same: someone used your personal information — likely your name, date of birth, and Social Security number — to open a financial account in your name.
This is identity theft, and it’s genuinely stressful. The good news: there’s a clear, free path to shut it down, clean up the tax mess, and protect your credit. Here’s exactly how to work through it.
First, Confirm What You’re Dealing With
Before you start making calls, gather the facts so you only have to explain the story once:
- The 1099-K itself (if you got one). Note the payer — it will say Block, Inc. — plus the gross amount reported and the tax year.
- Any account details you can see: the Cashtag, email, or phone number tied to the account, if the form or a notification shows them.
- Your own records. Confirm you never opened the account. A real but forgotten account is a very different problem from fraud.
Don’t try to log in to or “take over” the fraudulent account. You want it closed and documented, not controlled by you.
Step 1: Report It to Cash App and Ask Them to Close It
Block, Inc. (Cash App’s parent company) has acknowledged these fraudulently opened accounts and set up a dedicated process for victims. Call Cash App support at 1-800-969-1940 and specifically ask for the team that handles identity-theft victims. Phone lines are generally open daytime hours ET; you can also start a report in the app under Profile → Support.
Make three concrete requests and write down who you spoke to and when:
- Close the fraudulent account opened with your information.
- Block your SSN from being used to open future Cash App accounts.
- Issue a corrected 1099-K ($0) to both you and the IRS if a form was filed under your name.
If you only need to report a Cash App account that is contacting or scamming you (rather than one opened as you), you can also report it in-app: tap the search icon, find the account, open it, scroll down, and tap Report.
Step 2: File Your FTC Identity Theft Report
Go to IdentityTheft.gov and complete the report. This is the single most useful document you’ll create — the site builds an official FTC Identity Theft Report plus a personalized recovery checklist you can reuse with every company and bureau. You can also call 1-877-438-4338. It’s free and there’s no catch.
Keep the PDF it generates. Banks, Cash App, the IRS, and the credit bureaus all accept it as proof.
Step 3: Lock Down Your Credit — Two Free Tools
Someone who opened a Cash App in your name may try (or have already tried) to open other accounts. Use both of these — they’re free and don’t hurt your credit score.
| Tool | What it does | Cost & duration | Where |
|---|---|---|---|
| Fraud alert | Lenders must verify your identity before opening new credit | Free; 1 year (renewable). Contact one bureau, it tells the other two | Equifax, Experian, or TransUnion |
| Credit freeze | Blocks new creditors from pulling your report at all | Free; stays until you lift it | Each bureau separately (all 3) |
| Free credit reports | Spot other accounts opened in your name | Free, weekly | AnnualCreditReport.com |
A freeze is stronger than an alert because it stops access entirely; place it with all three bureaus for full coverage. Pull your reports and flag anything you don’t recognize — a fraud ring that opened a Cash App often tries banks and credit cards too.
Step 4: Handle the Surprise 1099-K With the IRS
A 1099-K reports money that flowed through a payment app. If a fraudster ran transactions through an account in your name, the IRS may think you earned that income. Do not ignore it and do not report the fake income as yours.
Take these steps:
- Contact the issuer (Block, Inc.) using Step 1 above and request a corrected $0 form.
- File IRS Form 14039, Identity Theft Affidavit, if the fraudulent 1099-K shows up on your IRS wage-and-income records. You can file it electronically through IdentityTheft.gov or attach it to a paper return.
- Keep your own return accurate. If the corrected form hasn’t arrived by filing time, the IRS instructs taxpayers to report only their real income and keep documentation of the dispute. A tax professional can help you attach an explanation.
Worked example: Maria receives a 1099-K reporting $31,400 in payments from “Cash App / Block, Inc.” for a tax year she never used Cash App. She calls 1-800-969-1940, asks the identity-theft team to close the account and issue a corrected form, files her report at IdentityTheft.gov, submits Form 14039, and files her own taxes reporting only her actual wages. She keeps every confirmation number in one folder. Months later, a collector contacts her about a balance on that account — she sends a copy of her FTC report and the account is removed from her file.
Step 5: Build Your Paper Trail and Report the Crime
- File a police report with local law enforcement, bringing your FTC Identity Theft Report. A police report helps when disputing accounts and, in rare cases, if the fraudulent account gets tied to other crimes.
- File with the FBI’s IC3 at ic3.gov if money movement or online fraud is involved.
- Keep everything: dates, names, confirmation numbers, and copies of every letter. Send disputes by a method you can track.
Frequently Asked Questions
Will I owe taxes on money I never received?
You should not owe tax on income that isn’t yours. The fix is to get Block, Inc. to issue a corrected $0 1099-K and to file Form 14039 so the IRS flags the entry as identity theft. Report only your real income on your return and keep records of the dispute. Consider working with a tax professional.
Why did the 1099-K get issued if I never hit the reporting threshold?
For 2025 and 2026, the federal 1099-K threshold is more than $20,000 and more than 200 transactions (the One Big Beautiful Bill Act reinstated the old rule). If a fraudster ran heavy volume through the account in your name, it can cross that line — which is often how victims discover the fraud in the first place. Some states set lower thresholds too.
Can Cash App refuse to tell me about the account?
Possibly. Because you can’t prove you “own” an account you never opened, support may be limited in what details they share. That’s exactly why you ask for the identity-theft team, lead with your FTC report, and get the account closed and SSN blocked rather than trying to access it yourself.
How long does it take to clean up?
Closing the account and placing freezes can happen within days. Corrected tax forms and removing fraudulent entries from your credit file can take weeks to a few months. Staying organized and persistent — resending your FTC report whenever a new issue surfaces — is what gets it finished.
The Bottom Line
A Cash App account opened in your name is unsettling, but the response is well-mapped: call Block’s identity-theft line and demand the account be closed, your SSN blocked, and the 1099-K corrected; file your free report at IdentityTheft.gov; freeze your credit with all three bureaus; and handle the tax form with Form 14039 so the IRS knows the income isn’t yours. Document every step — your paper trail is what finally closes the case.
WalletWisp is an informational resource, not financial, tax, or legal advice. For your specific situation, consult a qualified tax professional or attorney.
