# You Don't Need a CPA to File Taxes for Your US LLC (If You Have No Revenue Yet)

> Zero-revenue, single-member, foreign-owned LLCs file Form 1120 plus Form 5472 by mail or fax. This is the structural workflow, the AI review step, and the thresholds where DIY stops being viable.

- Canonical: https://www.globalsolo.global/blog/diy-tax-filing-zero-revenue-foreign-owned-llc-2026
- Published: 2026-04-15 · Last updated: 2026-10-04
- Author: Jett Fu
- Topics: tax, form-5472, foreign-owned-llc, non-resident, compliance, diy
- Affiliate disclosure: some links are affiliate links — https://www.globalsolo.global/about/how-we-make-money

---

The April 15 deadline just passed. Thousands of non-resident founders running zero-revenue US LLCs are looking at Form 5472 for the first time and being quoted $650 to $1,200 by CPAs to file it. That price tag is defensible for complex structures. For a shell LLC with no revenue, no reportable transactions above the shareholder loan, and no US trade or business, it is mostly a premium paid for unfamiliarity.

A viral Chinese-language WeChat article by 罩罩 recently walked non-resident founders through the self-filing process. Software engineer 图拉鼎 validated the approach publicly. The method is not new. What is new is the AI review layer -- models like Claude and ChatGPT now function as structural readers capable of catching form inconsistencies before submission.

**The short version: for a zero-revenue, single-member, foreign-owned US LLC, the federal filing is structurally simple -- a pro forma Form 1120 plus Form 5472, merged into a PDF and faxed or mailed to the IRS by April 15 (or October 15 with extension). This guide maps the workflow and the thresholds where it stops being viable.**

This is a structural guide, not tax advice. Multi-member LLCs, LLCs that have elected corporate taxation, and LLCs with US-source effectively connected income fall outside its scope -- the thresholds are listed explicitly so readers can self-identify whether they are covered.

## The two filings people confuse: state annual report vs. IRS tax return

The first place non-resident founders lose track is the assumption that one filing covers everything. It does not.

**State annual report** is a fee paid to the state of formation to keep the LLC in good standing. Deadlines and costs vary:

| State | Annual report fee | Deadline |
|-------|-------------------|----------|
| Delaware | $400 (from tax year 2026; $300 before) | June 1 |
| Wyoming | $60 minimum | 1st day of anniversary month |
| New Mexico | $0 (no annual report) | N/A |
| Nevada | $350 | Last day of anniversary month |
| Florida | $138.75 | May 1 |

**IRS tax filing** is a separate federal obligation. For foreign-owned LLCs, it is due April 15. It is required even if the LLC generated zero revenue. Filing the state annual report does not satisfy it.

The common failure pattern: founder pays the Delaware franchise tax, sees "annual report complete" in the state portal, and assumes the federal obligation is handled. It is not. Missing the Form 5472 filing triggers a $25,000 penalty per year per form, with additional $25,000 increments every 30 days after IRS notice. There is no cap.

## The decision tree: which forms apply to your LLC

Not every non-resident LLC files the same forms. The decision tree below maps structure to required filings:

| LLC structure | Federal forms required | DIY viability |
|---|---|---|
| Single-member, foreign-owned, zero revenue, no US trade or business | Form 1120 (pro forma) + Form 5472 | High |
| Single-member, foreign-owned, with US-source income | Form 1040-NR + Schedule C + possibly Form 5472 | Medium |
| Multi-member LLC (default partnership taxation) | Form 1065 + K-1s + possibly Form 8804/8805 | Low -- CPA indicated |
| LLC elected corporate taxation via Form 8832 | Form 1120 (full) + state corporate return | Low -- CPA indicated |
| LLC with reportable transactions above specific thresholds | Expanded Form 5472 + possible Form 8938, [FBAR](/blog/fbar-for-digital-nomads-the-10k-threshold-trap) | Low -- CPA indicated |

This guide covers the first row. If your structure matches any of rows 2 through 5, read the rest of this article as context, not instructions. A CPA's fee for a non-trivial return is small next to the penalty exposure from a misfiled complex one.

## The zero-revenue filing workflow

Here is the structural process for Row 1 -- single-member, foreign-owned, zero revenue, no US trade or business.

### Step 1. Confirm the identifying numbers

Filing requires a valid Employer Identification Number for the LLC. If the EIN was never obtained, that is a pre-filing step handled separately. For the process, see [How to Get an EIN Without SSN (Non-Resident Founders)](/blog/how-to-get-ein-without-ssn-non-resident-2026).

The second question -- whether the owner needs a number of their own -- stops more first-time filers than the EIN does. Form 5472 Part II asks for the foreign owner's identifying number, and reading that as "ITIN" sends people into a 7-to-11-week application before they file. The Instructions for Form 5472 (Rev. December 2024) describe a path that does not depend on one.

Part II line 4b(1) is where the foreign owner of a disregarded entity is identified:

> For each 25% foreign shareholder listed in Part II, enter the shareholder's U.S. identifying number, if any. Individuals should enter a social security number (SSN), or an individual taxpayer identification number (ITIN) issued by the IRS.

The qualifier "if any" governs that sentence, and the next line addresses the case where there is none:

> A reference ID number is required only in cases where no U.S. identifying number was entered for the shareholder on the preceding line.

A reference ID number is self-assigned, not applied for. The same instructions state there is "no need to apply to the IRS to request a reference ID number or for permission to use these numbers." It is alphanumeric, capped at 50 characters, and carried forward unchanged from one tax year to the next.

Line 4b(3) takes a foreign taxpayer identification number (FTIN). Where none exists: "If you do not have an FTIN, enter 'None' or 'N/A' in the FTIN block."

Read together, the published instructions supply a complete identification path for an owner holding neither an SSN nor an ITIN: the LLC's EIN in Part I, a self-assigned reference ID number in Part II, and an FTIN or "N/A" on line 4b(3). Whether an ITIN is needed for a different reason -- a Form 1040-NR obligation, a treaty claim -- is a separate question, covered in [EIN vs ITIN](/blog/difference-between-ein-and-itin-non-resident-founders).

### Step 2. Download the correct forms

Form 1120 and Form 5472 both have annual revisions. Download the version that matches the tax year being filed -- for 2025 tax year returns filed in 2026, use the 2025 revisions from [irs.gov/forms-pubs](https://www.irs.gov/forms-pubs). Filing the wrong year's form can trigger processing delays.

### Step 3. Complete Form 1120 as a pro forma

For a zero-revenue foreign-owned disregarded entity, Form 1120 is filed as a "shell" or pro forma. Only specific sections are completed:

- Name and address of the foreign-owned US DE
- Items B and E on the first page -- B is the EIN, E is the "check if" box for an initial return, final return, name change or address change
- Annotation at the top of the form: **"Foreign-owned U.S. DE"**
- All income and deduction lines remain blank

The Instructions for Form 5472 put the required set narrowly: "The only information required to be completed on Form 1120 is the name and address of the foreign-owned U.S. DE and items B and E on the first page." Item C, date incorporated, sits outside that list.

The purpose of the pro forma 1120 is not to report income -- it is the required transmittal form for Form 5472. The IRS instructions explicitly cover this treatment.

### Step 4. Complete Form 5472

Form 5472 is the substantive filing. It has five parts:

- **Part I:** identifying information for the reporting corporation (the LLC itself)
- **Part II:** identifying information for the 25% or greater foreign shareholder
- **Part III:** related party details
- **Part IV:** reportable transactions between the LLC and its foreign shareholder or related parties
- **Part V:** additional information for certain transaction categories

The Part IV "reportable transactions" definition is broader than most first-time filers expect. It includes:

- Loans from the shareholder to the LLC (including initial capitalization treated as a loan)
- Capital contributions to the LLC
- Expenses paid by the shareholder on behalf of the LLC (even if reimbursed)
- Any transfer of cash between the LLC and the shareholder or related entity

A truly zero-activity LLC -- no bank account funding, no expense pass-throughs, no [formation cost](/blog/how-much-does-it-cost-to-form-us-llc-non-resident) reimbursement -- would have all Part IV fields at zero. In practice this is rare. Most "zero revenue" LLCs have at least formation-cost reimbursements or initial capitalization that qualify as reportable.

### Step 5. Merge the forms into a single PDF

Form 1120 first, then Form 5472 attached behind it. The IRS processes them as a single submission. Digital signature is accepted.

### Step 6. Submit by mail or fax

E-filing is not available for foreign-owned disregarded entities filing Form 5472. The submission channels are:

- **Fax:** 855-887-7737 (confirm current number on IRS Form 5472 instructions before sending)
- **Mail:** Internal Revenue Service, 1973 Rulon White Blvd., M/S 6112, Attn: PIN Unit, Ogden, UT 84201

For founders without a fax machine, services like Dropbox Fax or HelloFax offer the first month free. Total fax cost runs under $10. If you mail instead, use a traceable service (certified mail, international courier with tracking).

## The AI review step

Before submission, the completed forms benefit from a structural review. Claude and ChatGPT are not tax professionals. What they are is structural readers capable of three specific checks:

**Cross-consistency check.** Paste the completed forms (or a structured description of each field's entry) and ask the model to identify inconsistencies between Form 1120 and Form 5472. Mismatched EINs, transposed addresses, and Part II shareholder details that contradict Part III related-party details are common first-time errors that AI catches reliably.

**Definition lookup.** Ask the model to define "reportable transaction," "related party," and "25% foreign shareholder" with citations to the current Form 5472 instructions. Then verify the field entries against the definitions. Terms like "related party" have specific meanings that are broader than most first-time filers assume.

**Missing field detection.** Ask the model to list every required field for each form and compare against what has been filled. Blank fields that need an entry -- or fields that need "N/A" rather than being left empty -- show up quickly.

What AI cannot do: determine whether a specific LLC has reportable transactions that exceed DIY-safe thresholds, replace a CPA review for complex cases, or promise the IRS will accept the filing. The review step is structural, not substantive.

## When DIY stops making sense

The thresholds that shift the DIY-to-CPA decision are structural, not arbitrary. The indicators:

| Structural indicator | What it suggests |
|---|---|
| Revenue above $0 from any US source | Form 1040-NR complexity, not pro forma Form 1120 |
| Multi-member LLC | Partnership return, K-1 preparation, foreign partner withholding |
| Reportable transactions above $1M aggregate | Form 5472 Part IV granularity increases; audit exposure rises |
| Entity elected corporate taxation | Full Form 1120 with income and deductions, not pro forma |
| Operations in multiple states | State income tax filings, nexus determination |
| Home-country reporting obligations (FEMA, CRS, tax treaty positions) | Cross-border documentation requirements beyond IRS |

The pattern: **the farther an LLC's structure moves from the pro forma zero-revenue case, the more the DIY approach loses its cost advantage over a CPA.** For structures that fall into any of the rows above, the $650 to $1,200 CPA fee is often a compliance insurance premium, not an overcharge.

## A first-person note on compliance insurance

For my own Delaware LLC (AGL, foreign-owned by a Hong Kong entity, 2025 tax year), I used a CPA -- [O&G Tax and Accounting](https://oandgaccounting.com), Alex Oware, $500 for Form 5472 plus pro forma 1120, which is also the firm's published rate. The return was straightforward. I could have filed it myself.

What I paid for was not complexity. It was accountability. A signed CPA return carries a different audit posture than a self-prepared one. For a first filing year, for an entity where I was still building documentation habits, the $500 bought a structural checkpoint I valued.

Next year, if nothing changes structurally, I would probably file zero-revenue shells myself. The O&G Tax bill is effectively a compliance insurance premium -- the value is the signature and the record, not the calculation.

*Correction (2026-10-02): from April until today this section said I paid $300. The invoice, dated 2026-03-06, was $500. The link also pointed to a different firm with the same initials; it now goes to Alex Oware's practice.*

If you would rather pay someone, published prices for the same two forms start at $300. The [Form 5472 cost table](/blog/what-happens-if-you-miss-form-5472-non-resident-llc#how-much-does-it-cost-to-file-form-5472) lists seven providers, what each one covers and who signs.

This is what "DIY viability" actually looks like in practice. Not "CPAs are overpriced." Rather: for certain structures, the CPA fee is paying for something other than preparation time, and the decision is whether that something is worth the premium in a given year.

## Missed April 15? Form 7004 gives six more months

For founders who missed the April 15 Tax Day, Form 7004 provides an automatic 6-month extension for Form 1120 filings. It has to be submitted by the original due date -- meaning the extension filing itself is also time-sensitive.

The structural facts:

- Form 7004 extends the **filing** deadline to October 15, 2026
- Form 7004 does **not** extend the **payment** deadline -- but a zero-revenue LLC has no payment due
- The extension filing requires the same workflow as Form 5472: mail or fax to the IRS

If both April 15 and the Form 7004 extension window are missed, the Form 5472 penalty ($25,000 per year per form) begins accruing from the original due date. That penalty has no cap and compounds every 30 days after IRS notice.

The Form 7004 workflow is faster than the Form 5472 workflow -- one page, basic identifying information, estimated tax liability (zero for a pro forma filing). Most first-time users complete it in under an hour.

## Key takeaways

- State annual reports and IRS tax filings are separate federal and state obligations. Filing one does not satisfy the other.
- For zero-revenue, single-member, foreign-owned LLCs, Form 1120 (pro forma) plus Form 5472 is the complete federal filing. The process is structurally simple.
- AI models function as structural readers for form cross-checking, definition lookups, and missing-field detection. They are not tax preparers.
- DIY viability decreases as structural complexity increases. The thresholds are explicit: any US-source revenue, multi-member structure, corporate election, multi-state operations, or home-country reporting obligations shift the calculus toward a CPA.
- Form 7004 provides an automatic six-month extension, filed by April 15. A zero-revenue foreign-owned LLC owes no tax with it; the pro forma 1120 carries zeros.

## Related resources

- [Form 5472: $25,000 Penalty for Non-Resident LLCs (Filing Guide)](/blog/what-happens-if-you-miss-form-5472-non-resident-llc)
- [Form 5472: The $25K/Year Penalty Most LLC Owners Miss](/blog/form-5472-penalty-chinese-llc-owners-2026)
- [How to Get an EIN Without SSN (Non-Resident Founders)](/blog/how-to-get-ein-without-ssn-non-resident-2026)
- [Entity Decision Framework for Cross-Border Founders](/blog/entity-decision-framework-cross-border-founders)
- [Formation Service Comparison](/tools/compare/formation)
- [Quick Check](/tools/risk-check)

## References

- IRS, [Instructions for Form 5472 (Rev. December 2024)](https://www.irs.gov/instructions/i5472)
- IRS, [Instructions for Form 1120 (2025)](https://www.irs.gov/instructions/i1120)
- IRS, [Form 7004 instructions](https://www.irs.gov/forms-pubs/about-form-7004)
- 罩罩, ["如何为美国 LLC/Inc 公司报税"](https://mp.weixin.qq.com/s/WvflMsw2QYoxoJlRki345g), WeChat
- 图拉鼎, [validating thread on DIY tax filing with AI review](https://x.com/tualatrix/status/2043714159175733298), X

---

*Not sure whether your LLC's structure matches the DIY path or crosses into CPA-indicated territory? The [free Risk Check](/tools/risk-check) maps your entity structure against the thresholds above in under two minutes.*