Missed a prior year? Start a late 1120 + 5472 filing with GatewayBase. Supported years and pricing should be checked before you publish or run ads.
If you missed Form 1120 and Form 5472 for your foreign-owned US LLC, the best next step is usually to deal with it directly. Waiting longer can make the problem harder.
Form 5472 has a serious penalty risk. Current IRS guidance lists a $25,000 penalty for each failure to file a complete and correct Form 5472 by the due date. Additional continuation penalties can apply in some cases after an IRS notice.
This does not mean every late filer will automatically have the same result. But it does mean late Form 5472 should not be ignored.
This article is general education, not tax advice. GatewayBase provides document preparation and filing workflow software. We are not a law firm, CPA firm, or tax advisor.
Why late Form 5472 matters
Form 5472 is not a normal income tax form for calculating profit and tax. It is an information return.
For many foreign-owned single-member US LLCs, the form reports transactions between the LLC and foreign related parties. Often, the related party is the owner.
Examples can include:
- Money the owner put into the LLC.
- Money the LLC paid to the owner.
- Loans between the owner and the LLC.
- Owner-paid startup costs.
- Payments to a foreign company related to the owner.
Even if the LLC had no US tax due, the reporting requirement can still matter.
What is filed late?
For a foreign-owned US disregarded entity, Form 5472 is filed with a pro forma Form 1120.
The pro forma Form 1120 is a basic wrapper. It is not the same as preparing a full corporate tax return for every corporation. The IRS instructions say the foreign-owned US disregarded entity uses Form 1120 with Form 5472 attached and follows the special filing instructions for that type of filer.
So when people say "late Form 5472," they often mean:
- A late pro forma Form 1120.
- One or more late Forms 5472.
- Required signatures or supporting details.
- Filing proof.
What to do if you missed the deadline
Start by building a clean record of what happened.
Use this checklist:
- Confirm the missed tax year.
- Confirm the LLC legal name.
- Confirm the EIN.
- Confirm the US address or mailing address.
- Confirm the foreign owner name and address.
- List all owner transactions for that year.
- Find receipts for owner-paid expenses.
- Gather bank statements, if the LLC had a bank account.
- Check whether any foreign related company was paid or received money.
- Keep any IRS notices you received.
If you received an IRS notice, pay close attention to the response deadline. You may want a qualified tax professional to help with the notice response.
Supported late years in GatewayBase
GatewayBase has a late-filing option for supported previous years.
As of the current repo state checked on 2026-07-08, GatewayBase supports Form 1120 tax years:
- 2023
- 2024
- 2025
The current late-filing price in the repo is $49.
Before publishing this article or running ads to it, re-check lib/form-1120.ts and lib/pricing.ts because supported years and pricing can change.
Should you wait for the IRS to ask?
Usually, waiting is not a good strategy.
If the filing was required, filing late may be better than doing nothing. If the IRS has already sent a notice, the notice may include deadlines and instructions. Missing those deadlines can increase risk.
GatewayBase can help prepare supported late filings, but it does not represent you before the IRS and does not guarantee penalty relief. If you need to argue reasonable cause, dispute a penalty, or respond to a notice, consider a qualified tax professional.
Common late filing situations
You formed the LLC and forgot the first year
This is common. A founder forms a US LLC, gets an EIN, opens a bank account, and starts using Stripe or another payment tool. They later learn that a foreign-owned LLC may need Form 1120 and Form 5472.
The first year often includes formation costs, registered agent payments, and owner contributions. These should be reviewed.
You had no revenue and thought there was no filing
No revenue does not always mean no filing. Owner funding and owner-paid expenses can still matter.
You filed in your home country and thought that was enough
Your home country tax filing is separate from US information reporting. A foreign-owned US LLC can have US filing obligations even if the owner also files taxes abroad.
You did not have an EIN
You generally need an EIN for the filing. If your LLC still does not have one, start with the EIN problem first.
How GatewayBase helps
GatewayBase turns Form 1120 and Form 5472 into simple questions for foreign LLC owners.
For supported late filings, GatewayBase helps you:
- Pick the tax year.
- Add company details.
- Add foreign owner details.
- Add related-party transaction details.
- Review the generated packet.
- Send the filing through the supported workflow.
- Store filing proof in your file vault.
Start here: late 1120 + 5472 filing.
If you are not sure whether your no-income year still needed filing, read: Do I need to file Form 5472 if my LLC had no income?
FAQ
Can I file Form 5472 late?
Yes, late filing is possible. The important point is to prepare a complete and correct filing and keep proof that it was sent.
Will filing late remove the penalty?
GatewayBase cannot promise that. Penalty decisions belong to the IRS. Filing late may still be better than ignoring the issue.
What if I missed more than one year?
Handle each year separately. Each tax year can have its own facts, transactions, and filing packet.
Can GatewayBase file any old year?
No. GatewayBase only supports specific tax years. As of the current repo check, those years are 2023, 2024, and 2025.
What if I received an IRS notice?
Read the notice carefully. If the notice asks for a response or penalty explanation, consider getting professional help.