Missed the April 15 Deadline? What NRAs Need to Do Now

You Missed the April 15 Deadline. Here’s What NRAs Should Do Next

If you’re a nonresident alien and April 15 came and went without filing your U.S. return, don’t panic. But don’t freeze either. The worst move after missing the deadline is doing nothing for another month.

For many NRAs, especially foreign investors with Florida rental properties, the situation is usually fixable. In some cases, the damage is smaller than people think. In others, the penalties start stacking fast. The difference comes down to one question: what kind of income did you have, and what should have been filed by April 15?

This guide breaks down what happens after you miss April 15, who actually had an April 15 deadline versus June 15, what penalties apply, and the exact order of moves you should make now if you’re behind.

First: Did You Actually Miss Your Deadline?

Not every NRA has the same filing deadline.

April 15 Usually Applies If:

You had U.S. wages subject to withholding
You were making or should have been making estimated tax payments
You owed tax and wanted to avoid interest and failure-to-pay exposure from April 15

June 15 Often Applies If:

You are a nonresident alien with no U.S. wages
Your U.S. income came mainly from rental property, partnership allocations, or other non-wage sources
You are filing Form 1040-NR and did not receive wages subject to withholding

This matters a lot. Many NRA landlords assume they already blew the filing deadline on April 15 when, technically, their return is not late yet. But there’s a catch: if you owe tax, interest can still start running from April 15 even when the return itself is due later.

So the first step is not guessing. It’s confirming whether your issue is:

a late return,
a late payment,
a missed estimated payment,
or just confusion about the actual deadline.

What Happens If You Really Missed April 15?

1. Failure-to-File Penalty

If your return was due on April 15 and you didn’t file or extend, the IRS can charge 5% of the unpaid tax per month, up to 25%.

If you’re more than 60 days late, the minimum penalty can be several hundred dollars even on a smaller balance.

2. Failure-to-Pay Penalty

If you owed tax and didn’t pay by April 15, the IRS can add 0.5% per month, also up to 25%.

This is smaller than the failure-to-file penalty, but it runs at the same time. That’s why filing quickly, even if you can’t pay everything, is still the right move.

3. Interest

Interest starts accruing from the due date on unpaid balances. Unlike a flat penalty, interest keeps compounding. If you wait months to act, the return gets more expensive than it needed to be.

4. Estimated Tax Underpayment Penalty

If you should have been making quarterly estimated payments and didn’t, the IRS may assess an underpayment penalty even if you file the annual return later. This is common for NRAs with profitable rental properties who only think about tax once a year.

The Most Common NRA Scenarios After April 15

Scenario A: You Have a Florida Rental Property and No U.S. Wages

This is the most common Celeraxiom case. You own a vacation rental, maybe through an LLC or partnership, and you don’t draw a U.S. paycheck.

In many of these cases, your Form 1040-NR filing deadline is June 15, not April 15. So the return itself may still be on time. But if you owe tax, April 15 still matters because that’s when the payment clock starts.

What to do now:

Confirm whether the income is being reported as ECI or default FDAP
Gather your rental P&L, depreciation schedule, mortgage interest, HOA, insurance, and repair records
Check whether a Section 871(d) election is being made so you can deduct expenses against rental income
Estimate any balance due and pay as soon as possible
File before June 15 if you can

Scenario B: You Had U.S. Wages or Service Income

If you worked physically in the U.S. and had wage withholding, or if the facts push your service income into a true April 15 filing deadline, then yes, you’re late.

What to do now:

Prepare and file the return immediately
Pay as much of the balance as possible now
If you were due a refund, file anyway. The penalties are tied to unpaid tax, not to late refunds, but you still need the return on file

Scenario C: You Sold Property and Had FIRPTA Withholding

If U.S. real estate was sold and FIRPTA withholding was taken, many NRAs are actually due a refund because the withholding is based on gross sale price, not actual taxable gain.

Missing the filing deadline delays the refund. It doesn’t make the refund disappear overnight. But the longer you wait, the longer the money stays with the IRS instead of with you.

If this is your situation, late filing is still worth doing quickly.

Scenario D: You Never Applied for an ITIN

This is where a lot of filings get stuck. You know you need to file, maybe even to claim a refund, but you don’t have a Social Security Number or ITIN.

Without an ITIN, the return can’t move properly through the system. So your next move is not just “file the return.” It’s:

prepare Form W-7,
pair it with the 1040-NR,
and submit it correctly so the ITIN application and tax return move together.

At Celeraxiom, this is one of the areas where we help most. Our team includes Beatriz Carvalho, a Certifying Acceptance Agent (CAA), which means we can help with the ITIN process without you mailing your original passport to the IRS.

The Right Order of Moves If You’re Behind

Step 1: Figure Out the Real Deadline

Don’t start with panic. Start with classification. Was your return actually due April 15, or is your true filing deadline June 15? That answer changes the whole posture.

Step 2: Estimate the Damage

How much unpaid tax is there? Did withholding already cover most of it? Was there FIRPTA or 1042-S withholding? Are you likely due a refund instead of a balance?

Too many people assume they are in trouble when they are actually due money back.

Step 3: Pay Something Now

If you expect to owe, pay as much as you reasonably can now. This reduces penalties and interest even before the return is filed.

Step 4: Get the Filing Package Ready

That usually means:

Form 1040-NR
Schedule E for rental income
Form 4562 if depreciation is involved
Form 8833 if you’re claiming treaty treatment
Form W-7 if you need an ITIN

Step 5: Don’t Wait for Perfect Information

If one document is missing, that doesn’t automatically justify another 30 days of delay. In many cases, it’s better to file based on the best available numbers and amend later if needed than to keep the return frozen while penalties keep growing.

What About Extensions?

If April 15 already passed and you didn’t file an extension, that window is gone. You don’t retroactively create a timely extension after the fact.

But that doesn’t change the advice: file now anyway.

An extension only protects you from the failure-to-file penalty. It never protected you from paying late. So once the deadline is gone, the practical focus shifts from procedural cleanup to damage control.

Where ECI Changes the Game

This is a big one for NRAs with Florida properties, partnerships, or service income.

If your income is treated as ECI (Effectively Connected Income), you’re taxed on net income at graduated rates, not on gross receipts at a flat 30% withholding model. That means:

you can deduct expenses,
the actual tax might be much lower than expected,
and in some cases you may still be due a refund even though you filed late.

Rental income is the classic example. If you make the Section 871(d) election, rental income can be treated as ECI. That usually produces a better result than default FDAP treatment because you get to deduct management fees, repairs, HOA, insurance, depreciation, and mortgage interest.

So if you missed the deadline and own U.S. rental property, one of the first questions is not “how bad is this?” It’s “was the income being reported the right way?”

Common Mistakes People Make After Missing the Deadline

Assuming April 15 applied when the real filing deadline is June 15. This creates unnecessary panic and bad decisions.
Doing nothing because they can’t pay in full. Filing and partial payment are still much better than silence.
Missing the Section 871(d) election. This can turn deductible net rental income into gross income taxed too aggressively.
Waiting for an ITIN before doing any work. The ITIN process and tax return should usually move together.
Ignoring withholding already paid. FIRPTA, 1042-S, or partnership withholding may mean you’re due a refund.
Treating service income as simple FDAP when the facts point to ECI. That can distort the whole return.

What If You Owe but Can’t Pay?

Still file. Always.

The IRS is much harsher on non-filers than on people who file and then work out the payment problem. Once the return is filed, you can look at installment options or partial payment strategies. But if the return is sitting unfiled, the penalties keep compounding and the problem gets uglier fast.

The Bottom Line

Missing April 15 is not the same thing as being beyond repair.
Many NRAs without U.S. wages actually file 1040-NR by June 15, not April 15.
Even if the return deadline is later, unpaid tax can still start costing money from April 15.
ECI treatment, especially for rental income, can materially reduce what you owe.
If you need an ITIN, don’t let that stall the entire case. Move the W-7 and return together.
The right move after missing a deadline is almost never “wait longer.”

How Celeraxiom Can Help

At Celeraxiom, we help NRAs clean up missed filing deadlines, late payments, ITIN issues, FIRPTA refund claims, and rental income reporting. If you own Florida property and aren’t sure whether your deadline was April 15 or June 15, or whether your rental income should be treated as ECI, we can sort that out fast. And if you still need an ITIN, Beatriz Carvalho, our IRS-authorized Certifying Acceptance Agent, can handle the W-7 process without you mailing your passport to the IRS.

Frequently Asked Questions

I missed April 15. Am I automatically late as an NRA?

No. Many NRAs who do not receive U.S. wages have a June 15 filing deadline for Form 1040-NR. But if you owe tax, interest may still start from April 15. You need to separate the filing deadline from the payment deadline.

I only own a Florida rental property. Do I still have a problem?

Possibly, but not always. If you have no U.S. wages, your 1040-NR may still be due June 15. The key issues are whether you owe tax, whether estimated payments should have been made, and whether your rental income is being treated correctly as ECI under Section 871(d).

If I am due a refund, do late-filing penalties still apply?

The major late-filing penalties are tied to unpaid tax. If you are due a full refund and owe nothing, the penalty exposure is much lower. But you should still file promptly so you do not delay the refund or create unnecessary IRS correspondence later.

Can I still get a FIRPTA refund if I file late?

Yes, in many cases. Late filing delays the refund, but it does not automatically eliminate your right to claim it. The faster the return is filed, the faster the refund process can start.

I don’t have an ITIN yet. Should I wait until I get one?

No. Usually the better move is to prepare the W-7 and 1040-NR together and submit them as one package. That keeps the case moving instead of turning the ITIN into another source of delay.