Closing Date Changes and FIRPTA Penalties: What You Lose by Not Telling Us

A pending Form 8288-B, a 20-day remittance window, an IRS that scrutinizes postmarks. When the closing date slips and we don't know, the buyer can face up to 25% in late-filing penalties.

FIRPTA penalties are calendar-driven. Forms 8288 and 8288-A must reach the IRS within 20 days of closing. Form 8288-B applications are anchored to the closing date the IRS was told about. When the closing date slips and nobody tells the firm working on the FIRPTA filings, the result is an out-of-window filing and a buyer facing late-remittance penalties of up to 25%.

This is the most common avoidable problem in FIRPTA practice. Here's why it happens, what the consequences are, and how to prevent it.

Why closing dates slip

Three normal closing dynamics that derail FIRPTA timing:

• Title issues — survey discrepancies, unreleased liens, or chain-of-title gaps that need to be resolved before the closing can proceed
• Buyer financing delays — appraisal short of contract price, underwriting questions, or last-minute documentation requests from the lender
• Inspection contingencies — unexpected findings that lead to negotiation, repair work, or extended due-diligence periods

Each is normal. Each can push closing by a week, two weeks, sometimes a month. The closing agent typically just updates everyone's calendar and moves on.

The problem is that the firm working on the FIRPTA filings — Form 8288-B if pending, ITIN application if recent, Forms 8288 and 8288-A in preparation — is anchored to the original closing date.

What goes wrong when we're not told

Three concrete failure modes:

1. Form 8288-B is filed with the wrong closing date. If the IRS rules on a 90-day timeline anchored to the original closing date, and the actual closing happens later than the IRS expected, the certificate may need to be re-issued or supplemented — potentially restarting the clock.

2. The 20-day remittance window calculations break. The IRS measures lateness from the actual closing date. If we mailed Forms 8288 and 8288-A based on the original date and the closing actually happened 8 days later, the forms arrive 8 days early — that's fine. If the closing happened 8 days earlier than expected and we mailed accordingly, we're 8 days late.

3. ITIN expiration timing. ITINs expire if not used on a return within three years. A delayed closing can sometimes push a planned 1040-NR filing past the ITIN expiration date, requiring a renewal application and additional delay.

The penalty math

IRC § 6651 imposes late-filing penalties on Form 8288 filings. The penalty structure:

• 5% of the unpaid tax for each month or partial month the return is late, up to 25% maximum
• Plus interest on the unpaid amount
• Plus a separate failure-to-deposit penalty of 2-15% if the withheld funds aren't remitted with the form

On a $112,500 withholding (15% of $750,000), a one-month late filing creates a $5,625 penalty. Three months late, $16,875. The penalty falls on the Withholding Agent — meaning the buyer.

What to do

The fix is uncomfortably simple: tell us the moment the closing date changes. Even if the change is rumored, even if the closing might still happen as scheduled, even if you're not sure if it's a real change.

If we know:

• We notify the IRS of the change on pending 8288-B applications
• We adjust the 20-day remittance schedule
• We coordinate with the closing agent to verify both sides are aligned
• We re-check Section 899 country status (annual list updates can shift between an original and revised closing date)

None of this is expensive when we know. All of it is potentially catastrophic when we don't.

The general rule: schedule changes are rarely a problem when we know about them; they're only a problem when we don't.