ITIN for non-US founders.
File US taxes from anywhere.
An ITIN (Individual Taxpayer Identification Number) is a nine-digit IRS number for people who must file US taxes but cannot get an SSN. Monezzi prepares Form W-7, certifies your passport copy, and files it with the IRS.
Focus on your customers, we will handle the bureaucracy.
Sources: official IRS guidance on the Individual Taxpayer Identification Number, the Form W-7 application, and the IRS procedure for rescinding an ITIN once you receive an SSN.
Why an ITIN is Important
Four concrete situations where you need an ITIN to operate a US business as a non-resident.
Tax compliance
Required for non-U.S. residents with U.S. tax obligations.
US banking
Needed to open U.S. business bank accounts when you do not have an SSN.
Federal tax filings
Enables filing of federal taxes for LLCs, partnerships, or other US-source income.
Treaty benefits
Helps you apply for U.S. tax treaty reductions on income or withholding.
Apply for your ITIN before you move to the US
If you are on the path to a US visa — E2 investor, O1 extraordinary ability, L1 intra-company, or any other route — apply for your ITIN now, while you are still abroad. The ITIN itself is independent of your visa. Once you arrive, you can start using US banking, ITIN-accepting credit cards, and pre-built credit history months before your SSN is issued.
Head-start on US credit history
Major US banks and card issuers (Capital One, Chase Premier services, Wells Fargo) accept ITINs for credit-card and loan applications. Open one early, pay on time, and you arrive in the US with an existing credit footprint instead of starting from zero.
Bank account ready on day one
ITIN-friendly US banks let you open business or personal accounts with an ITIN. With your ITIN in hand, you can wire funds, set up direct deposits and pay US bills the same week you land.
Federal tax filing before relocation
If you own a US LLC, you owe federal filings (Form 5472, Pro-Forma 1120) from year one — even if you have not moved yet. An ITIN lets you sign and file those returns yourself.
ITIN to SSN transition, history preserved
When the SSA later issues your SSN, the IRS lets you transition your ITIN record to the SSN. Your credit history, tax filings, and bank relationships carry over — you do not start over.
"The single biggest reason ITIN applications get rejected is a mismatched name on the W-7 versus the passport — diacritics, transliteration of Cyrillic or Arabic scripts, middle-name handling. We catch every one of these before it leaves our desk."
ITIN Overview & Key Details
The ITIN is a nine-digit number formatted like an SSN (XXX-XX-XXXX), issued by the IRS to individuals who need a U.S. taxpayer identification but are not eligible for an SSN. ITINs are used solely for tax reporting and cannot be used for work authorization in the U.S.
Who needs it
Non-U.S. residents earning U.S.-source income, non-resident owners of U.S. entities, or individuals with U.S. tax filing obligations.
How to apply
File IRS Form W-7 with supporting documentation such as a passport, visa or national ID.
Processing time
Typically 6 to 10 weeks, but timing can vary based on IRS workload.
Renewal
ITINs expire if unused for three consecutive years or if issued before 2013 and never renewed.
How we assist — step by step
We simplify every stage of obtaining an ITIN, ensuring compliance and timely processing with the IRS.
Eligibility check
We review whether you qualify for an ITIN based on your residency, income sources, entity ownership, and any pending US visa.
Document preparation
We gather all required documents — passport, visa, IRS forms, and proof of identity — and prepare them for submission.
Form W-7 submission
We complete IRS Form W-7 accurately, attach supporting documentation, and submit it to the IRS by mail or through an IRS-authorized Acceptance Agent. The IRS controls processing time from here — we cannot promise a date.
Approval — CP 565 issued
When the IRS approves your application, you receive your ITIN on Notice CP 565. We store it in your Documents vault and pre-fill it into every Monezzi form (bank application, Stripe, federal tax filings).
Use it (and later transition to SSN)
Use your ITIN to file federal taxes, open ITIN-friendly US bank accounts, apply for ITIN-accepting credit cards, and start building US credit history. When you later receive an SSN, the IRS lets you transition your ITIN history to the SSN so your credit file is not lost.
Frequently Asked Questions
Answers to common questions about ITINs for non-U.S. founders.
Non-U.S. residents with U.S. tax obligations, owners of U.S. entities, or individuals required to file federal taxes who do not qualify for a Social Security Number.
No. ITINs are strictly for tax reporting purposes and cannot be used to work legally in the U.S.
The IRS controls the timeline. In our experience it often runs 3 to 4 months from submission, and can take longer during peak filing season (January to April) or when supporting documents need a second review. Anyone promising a fixed week-count is guessing.
Yes. Most U.S. banks require an ITIN or SSN to open business accounts if you are a non-U.S. founder.
Yes. Several major US banks (Capital One, Chase, Wells Fargo, American Express) accept ITINs on credit-card and loan applications. Open an ITIN-accepting card early, use it responsibly, and your credit history starts building before you move to the US — a meaningful advantage when you later apply for a mortgage, car loan or business line of credit.
You stop using the ITIN, but you do not lose its history. Per IRS guidance you write to the IRS asking them to merge your prior ITIN records under your new SSN. Your tax filings, credit accounts and bank relationships carry over — you do not start from zero.
Because your SSN can be months away after you land, and the things you need most on day one — a US bank account, a credit card to rent an apartment, the ability to file the federal taxes your US LLC already owes — all work with an ITIN. Founders who apply early arrive with infrastructure in place; founders who wait spend the first quarter rebuilding from scratch.