You can buy a home in Florida with your passport. You can close without setting foot in the United States, and you can even get a mortgage without a Social Security number. What you cannot do is stay compliant with the IRS without a taxpayer identification number, and that is where the ITIN comes in. Many investors find out too late: in their first year of rental income, when the accountant asks for the number to file the return, or worse, on the day they sell and realize tens of thousands of dollars are being withheld that they cannot get back without one. If you are not yet sure which taxes you owe as a nonresident, start with our guide to taxes for foreigners in Florida and come back here for the application process.
What an ITIN is and what it is not
An ITIN (Individual Taxpayer Identification Number) is a nine-digit number the IRS issues to people who have U.S. tax obligations but are not eligible for a Social Security number. It always starts with 9 and uses the same format as an SSN: 9XX-XX-XXXX.
It is worth being clear about what an ITIN does not do, because there is a lot of confusion out there:
- It does not authorize you to work.
- It does not change your immigration status or prove legal residency.
- It does not entitle you to Social Security benefits.
- It does not replace a visa.
It is a tax tool and nothing more. But for a foreign real estate investor, it is a tool you will need sooner or later.
When you will need it as an investor
Not every investor needs an ITIN on the same day. This table covers the most common scenarios:
| Situation | Do you need an ITIN? | Why |
|---|---|---|
| You buy a property in your own name and do not rent it | Not right away | The purchase alone does not create a federal filing requirement |
| You rent the property (short or long term) | Yes | You must file Form 1040-NR every year to report the income |
| You sell the property | Yes | To recover the 15% FIRPTA withholding you have to report the sale |
| You buy through a single-member LLC | It depends | The LLC uses an EIN, but the foreign owner reports the income personally |
| You apply for a mortgage as a foreigner | Sometimes | Some lenders accept only a passport; others ask for an ITIN |
| You open a bank account or build credit | Helpful | It makes things easier with banks and card issuers |
The practical rule is simple: if your property will generate income or you will sell it someday, you will need an ITIN.
Requirements and documents for Form W-7
You apply for an ITIN with IRS Form W-7. The basic pieces are:
1. Reason for applying. The form has boxes to explain why you need the number. The most common one for investors is “nonresident alien required to get an ITIN to file a U.S. federal tax return.”
2. Proof of identity and foreign status. A valid passport is the only document that proves both at once. If you do not use your passport, you need at least two documents from an approved list, such as a national ID card, a foreign driver’s license, or a birth certificate.
3. Originals or certified copies. The IRS does not accept regular photocopies. You either send the original, send a copy certified by the agency that issued the document, or apply through an agent who can verify the original.
4. A tax return attached. In most cases, Form W-7 is submitted together with the federal return (Form 1040-NR). There are exceptions, which we cover below.
Three ways to submit your application
| Option | How it works | Risk to your documents | When it makes sense |
|---|---|---|---|
| Mail to the IRS | You send the W-7, the return, and original or certified documents to the ITIN office in Austin, Texas | High: your passport travels by mail and may take weeks to come back | Only if you have copies certified by the issuing agency |
| Certified Acceptance Agent (CAA) | An IRS-authorized professional verifies your originals and sends copies | Low: your passport never leaves your hands | The most common choice for foreign investors |
| Taxpayer Assistance Center (TAC) | In-person appointment at an IRS office in the U.S. | Low | If you are in Florida and can get an appointment |
If you live abroad, a CAA is almost always the smartest route. Some CAAs work with clients remotely, and a few are based in Latin America. Fees vary, but the time and risk you save usually justify the cost.
Exceptions: when you do not need to attach a tax return
The IRS lets you apply for an ITIN without filing a tax return in certain cases, known as exceptions. For real estate investors, the most relevant one applies when tax is being withheld on the sale of U.S. real property under FIRPTA. In that case, instead of a return, you attach documents that prove the transaction, such as the purchase and sale contract or the withholding forms.
This exception is useful because it lets you apply at the time of the sale, without waiting for tax season. The Form W-7 instructions spell out every exception and the exact documents the IRS wants, and it is worth reviewing them with your accountant before you send anything.
Realistic timeline and the mistakes that slow it down
The IRS says processing takes about seven weeks from the date it receives a complete application. That stretches to nine to eleven weeks during peak tax season, from mid-January through April, and when the application is mailed from outside the United States.
With those timelines, a realistic calendar for an investor who started renting in 2026 looks like this:
| When | What to do |
|---|---|
| October to December 2026 | Gather your passport and choose a CAA or accountant |
| January to February 2027 | Prepare your 2026 Form 1040-NR together with the W-7 |
| By June 15, 2027 | Usual deadline for nonresidents without wages subject to withholding |
| 7 to 11 weeks after submitting | You receive the IRS letter with your assigned ITIN |
The mistakes that cause delays are almost always the same:
- Your name is spelled differently on the W-7, the passport, and the return.
- You send plain photocopies instead of originals or certified copies.
- You check the wrong reason box on the form.
- You forget to sign, or you send an incomplete return.
One detail few people know: an ITIN expires if you do not use it on a federal return for three consecutive years. If you stop renting your property for a few years and then sell, check that your number is still active before closing.
A numbers example: selling with and without an ITIN
Say you bought a condo in Orlando for $350,000 and sell it in 2027 for $400,000. After purchase and sale costs, your net gain is $35,000.
- FIRPTA withholding at closing: 15% of $400,000 = $60,000. The closing agent withholds it and sends it to the IRS.
- Estimated tax on the gain: at an illustrative 15% rate on $35,000, about $5,250.
- Balance owed back to you: $60,000 – $5,250 = $54,750.
With an ITIN, you file Form 1040-NR for the year of the sale and get that $54,750 refunded. Without an ITIN, the money stays with the IRS until you apply, and if your application lands in the middle of tax season, you could wait months longer than necessary. In some cases you can also request a reduced withholding before closing (Form 8288-B), but that, again, requires an ITIN.
That is why we recommend applying as soon as you start renting, not when you are already selling.
ITIN, EIN, and SSN: which one you need for what
People mix up these three numbers all the time, and banks and accountants sometimes use them as if they were interchangeable. They are not.
An SSN (Social Security number) is for citizens, permanent residents, and foreigners with work authorization. As a nonresident investor, you will not have one, and you do not need it.
An EIN (Employer Identification Number) identifies a business, such as your LLC. You request it with Form SS-4, and even if the owner is a foreigner with no SSN or ITIN, the IRS will assign it by fax or mail. The EIN is used to open the LLC’s bank account and file the company’s information returns.
An ITIN identifies you as an individual to the IRS. It goes on your personal income tax return and on the withholding forms when you sell.
In practice, a foreign investor who buys through an LLC ends up with two numbers: the company’s EIN and their own ITIN. Someone who buys in their own name only needs the ITIN. Getting both early keeps your bank account, your tax return, or the closing of a sale from stalling over paperwork that could have been handled months before.
How the ITIN fits into your tax planning
The ITIN is the first step, not the last. Once you have it, you need to decide how to report rental income (on gross income with 30% withholding, or on net income with deductions), how to claim depreciation, and how to prepare for a future sale. Those decisions can change the final return on your investment quite a bit.
Our accounting consulting for real estate investors in Orlando supports foreign clients through the ITIN application, the annual rental income return, and planning for the sale, working with certified agents so you never have to mail your passport.
Frequently asked questions about ITINs for investors
Can I buy property in Florida without an ITIN?
Yes. You can buy with your passport, and the purchase does not require an ITIN. The number becomes necessary when the property produces rental income, when you sell it, or when a lender asks for it as part of the loan review.
How long does it take the IRS to issue an ITIN?
About seven weeks from the date the IRS receives a complete application. During peak tax season, from mid-January through April, or if you apply from outside the country, it can take nine to eleven weeks.
Do I have to mail my original passport to the IRS?
Not necessarily. You can apply through a Certified Acceptance Agent, who verifies your original passport and sends copies to the IRS. That way your document never travels by mail.
Does an ITIN expire?
Yes. If you do not use it on a federal tax return for three consecutive years, it becomes inactive and you must renew it with the same Form W-7 before using it again.
Does an LLC need an ITIN?
The LLC is identified with an EIN, not an ITIN. But if you are the foreign owner of a single-member LLC, you usually report the rental income in your own name, and for that you do need your own ITIN.
Getting your ITIN early saves you months of waiting and leaves you ready to file, sell, or refinance without surprises. Let us help you get your ITIN and organize your tax obligations as a foreign investor in Florida.
