If you get this letter, verify your identity through IRS Identity Theft Central and track your refund with Where’s My Refund?. Expect your refund to take 21–60 days—or longer—if your return gets flagged.
What’s going on here?
The IRS runs these reviews to confirm your return is accurate and prevent fraud. Around 90% of refunds now process within 21 days, but selected returns can take up to 60 days or more. (That’s just their way of keeping things secure—no red flags about your honesty.)
How do I fix this?
Here’s exactly what to do:
- Read the letter first. Note the 30-day response deadline and the IRS contact info listed.
- Log into your IRS account. Check your filing status and reported income at IRS Account.
- Check your refund status. Use Where’s My Refund? and update your address with Form 8822 if needed.
- Send what they ask for. Mail or upload documents—like W-2s or 1099s—using the address in the letter. Always include the reference number from the letter.
- Still stuck? Call them. Use the toll-free number on the letter or reach the Taxpayer Advocate Service at 1-877-777-4778 for stubborn cases.
What if nothing changes?
- Still processing? Call 1-800-829-1040 (individuals) or 1-800-829-4933 (businesses) if your refund status hasn’t budged past 60 days.
- Refund got smaller? Contact the Financial Management Service at 1-800-304-3107 to see if it was used for debts like student loans or child support.
- Unfair delay? Escalate through TAS or file Form 911 to push for answers.
How can I avoid this next time?
Try these moves to dodge future reviews:
- File online with direct deposit—refunds hit your account 1–2 weeks faster than paper checks.
- Triple-check your entries, especially the Recovery Rebate Credit (RRC) or Earned Income Tax Credit (EITC).
- Make sure your name and Social Security Number match what the Social Security Administration has on file.
- Use IRS Free File or tax software that catches errors before you hit submit.
- Keep an eye on your IRS account for anything fishy.
Keep in mind: timing isn’t guaranteed. Back in 2025, the IRS had 8.5 million unprocessed returns sitting in the queue thanks to pandemic staffing shortages (IRS, 2025).
Why did the IRS pick my return?
Most of the time, it’s just routine. Maybe your filing status doesn’t match their records, or your income numbers seem inconsistent. Sometimes it’s because you claimed credits that often get abused, like the EITC or RRC. (Honestly, it’s not personal—just their automated system doing its job.)
Can I still get my refund while they review it?
You won’t get the refund instantly, but it’s not lost. The IRS holds onto it while they finish the check. If everything checks out, your money will arrive—just later than usual. (Patience is the name of the game here.)
How long will this take?
If the IRS needs more info, they’ll let you know. Otherwise, the clock starts when they receive your response. Big backlogs—like the 8.5 million returns stuck in 2025—can stretch things out even further. (Bureaucracy moves at its own pace, unfortunately.)
What documents do I need to send?
Common requests include W-2s, 1099s, or proof of credits claimed. Don’t guess—only send what the letter lists. If you’re unsure, call the number on the letter to confirm. (When in doubt, less is more—don’t overload them with extra papers.)
What if I miss the deadline?
Deadlines matter, but life happens. If you can’t meet the 30-day window, call the IRS right away. They may grant more time or suggest alternatives. (Don’t panic—just act fast.)
Will this affect my credit score?
IRS letters like 4464C are internal security checks. They don’t get reported to credit bureaus, so your score stays untouched. (One less thing to worry about.)
Can a tax professional help with this?
A CPA or enrolled agent can step in, but you’ll need to sign a power of attorney (Form 2848) first. They can’t access your case without your permission. (If you’re swamped, this might be worth the cost.)
What if I never got the letter?
Sometimes letters get lost in the mail. Log into your IRS account or call 1-800-829-1040 to see if they have a record of sending it. If not, they can resend it or guide you next steps. (Better safe than sorry.)
Is this related to identity theft?
Most 4464C letters pop up because of mismatched info or random selection. That said, if you’ve been a victim of identity theft before, mention it when you respond. (Better to over-explain than leave them guessing.)
What if the IRS made a mistake?
IRS systems aren’t perfect. If you spot a clear mistake—like the wrong refund amount or a missing form—call the number on the letter. They’ll review it and fix things if needed. (Stand your ground politely.)
How do I know the letter is real?
Real IRS letters come from an IRS service center and include a notice number (like CP05 or 4464C). Never click links in unexpected emails—always go to irs.gov directly. (Scammers love to fake these letters, so stay sharp.)
What’s the worst that can happen?
In rare cases, they might adjust your refund if they spot errors or unpaid debts. But outright denials are uncommon—most issues get resolved with extra documentation. (Keep calm and gather your papers.)
Where can I find more help?
For starters, bookmark IRS Identity Theft Central. If you need hands-on help, call the main line at 1-800-829-1040 or visit a local IRS office. (Sometimes a face-to-face chat clears things up fastest.)
