If you didn't attach Form 4547 to your federal return by April 15, your child doesn't lose eligibility. April 15 is the preferred filing date, not a hard cutoff. You can still file — it just takes a different path and a few more weeks to process. Here's exactly what to do.
The One-Sentence Answer
Mail Form 4547 to the IRS processing center for your state right now, and the $1,000 will still land in your child's account in 6–8 weeks.
That's it. The rest of this article is about the mechanics — where to mail it, what to expect, and the specific scenarios where the answer is different.
Why April 15 Is Preferred, Not Required
April 15 lines up with the federal tax deadline. When you file Form 4547 attached to your return, it rides along with your 1040 and gets processed in the same batch — faster routing, faster matching with the SSA, faster deposit. For e-filed returns, this path is typically 2–4 weeks end to end.
Missing that window means Form 4547 takes its own journey through IRS paper processing. Same form, same $1,000 outcome — just slower.
How to File Late
Step 1 — Fill out the form
Fill out Form 4547 exactly as you would for an on-time filing. Nothing about the form changes — same sections, same SSN requirement, same election box. See the full walkthrough.
The fastest path is the guided Form 4547 Filler, which validates common errors and prints the right mailing address for your state.
Step 2 — Mail it to the correct IRS processing center
The IRS routes Form 4547 to one of three processing centers based on your state.
Austin, TX:
Department of the Treasury Internal Revenue Service Austin, TX 73301-0002
States: AL, AR, AZ, FL, GA, LA, MS, NC, NM, OK, SC, TN, TX
Kansas City, MO:
Department of the Treasury Internal Revenue Service Kansas City, MO 64999-0002
States: CT, DC, DE, IA, IL, IN, KY, MA, MD, ME, MN, MO, NH, NJ, NY, PA, RI, VA, VT, WI, WV
Ogden, UT:
Department of the Treasury Internal Revenue Service Ogden, UT 84201-0002
States: AK, CA, CO, HI, ID, KS, MI, MT, ND, NE, NV, OH, OR, SD, UT, WA, WY
Mail to the wrong center and the IRS will internally re-route the form, adding 2–4 weeks. The Form Filler tool prints the right one on the cover sheet automatically.
Step 3 — Use trackable mail
Send via USPS Certified Mail, Priority Mail with tracking, UPS, or FedEx. You want proof of delivery in case the IRS needs you to re-file after a mishandle. Keep the signed form's copy with your tax records.
Step 4 — Wait 6–8 weeks
Paper-only Form 4547 processing runs 6–8 weeks in normal periods. During peak post-deadline months (May–July) it can run longer. You'll receive:
- An IRS confirmation letter when the election is accepted.
- A Robinhood letter when the account opens and the $1,000 deposit clears.
Scenario-Based Decisions
"My child was born last year but I didn't know about the program"
File now by mail. The $1,000 deposit is not reduced — you only lose compounding time. At 7% annual returns, one missed year costs roughly $220 off the final balance by age 18. Real, but not catastrophic. Mail it this week.
"My child was born three years ago and I'm just learning about this"
Same answer: file by mail now. Three years of delay costs roughly $620 off the final balance on the $1,000 alone, at 7%. Still dramatically better than not filing. The program allows filings any time before the child turns 18.
"I filed my return on time but forgot to attach Form 4547"
Common scenario. Don't amend your 1040 — just mail the 4547 separately now. The IRS processes it as a standalone filing; your return isn't affected.
"I filed an extension on my tax return"
You have two choices:
- File 4547 with your extended return (typically by October 15). Processes in the same fast path as an April 15 filing.
- Mail 4547 separately now, independent of the extension.
Option 2 gets the $1,000 earning faster. Most families should take it.
"I'm filing jointly but my spouse is on the form"
Either spouse can sign as the filer, as long as that spouse can claim the child as a dependent. Don't file two Form 4547s for the same child — that triggers a duplicate-filing rejection and delays the process further.
"I don't have my child's SSN yet"
You cannot file Form 4547 without the child's SSN or ITIN. Apply for a replacement card through the Social Security Administration if it's lost. If the child's SSN was never issued (common for adopted children in the first months), apply via SSA Form SS-5 first, then file 4547.
"I'm filing for a second child and I already filed for the first"
Fine. Each child requires its own 4547 filing. A single 4547 can handle up to four dependents, so if you're filing for multiple eligible kids at once, combine them. Otherwise file separately.
What You Don't Lose by Filing Late
- The $1,000 deposit. Full amount, regardless of when you file.
- Eligibility. Filing after April 15 doesn't disqualify anyone.
- Your right to amend. You can always refile if the first submission rejects.
- Contribution cap. The $5,000/year cap is annual, not tied to the filing date. You can still max out.
What You Do Lose
Compounding time. Every month the money isn't invested is a month it isn't growing. At 7%, a one-year delay on the $1,000 seed costs roughly $220 by age 18. A five-year delay costs roughly $970. These numbers look small against a decent balance, but they compound.
Full numbers in What Happens If I Do Nothing?.
Estimates assume a 7% average annual return. Not a guarantee — all investing involves risk, including possible loss of principal.
Common Questions
Is there a penalty for late filing?
No. Form 4547 has no filing fee and no late penalty. The IRS doesn't fine you for delay.
Do I need to explain why I'm filing late?
No. There's no late-filing reason field on the form.
What if the form gets rejected?
Fix the error (usually a name/SSN mismatch) and resubmit. You don't lose your filing slot, and the $1,000 deposit is still available.
Can I file electronically after April 15?
Only if you're filing an extension or amendment and attaching 4547 to that return. Standalone e-filing of 4547 outside of a tax return is not supported.
Should I wait for an online portal?
No. Treat any "wait for a portal" story with skepticism. File the paper form now — every week of delay is compounding you don't get back.
The Bottom Line
Missing April 15 is a minor inconvenience, not a crisis. Mail Form 4547 to the correct IRS processing center this week, wait 6–8 weeks, and the $1,000 lands in your child's account. The Form 4547 Filler does the busywork; you do the mailing.
This article is general educational information, not tax or legal advice. IRS procedures and addresses can change; verify the current mailing address at IRS.gov before sending.