Why FIRPTA Withholding Is Often Higher Than Your Actual Tax and How Refunds Are Calculated

Introduction

Foreign sellers of U.S. real estate often reach the same conclusion after closing. The amount withheld under FIRPTA feels far too high compared to the profit they believe they earned. In some cases, sellers are certain they sold at a loss, yet a sizable payment was still sent to the IRS.

This disconnect leads many sellers to assume something went wrong. In most cases, it did not. The issue is not an error in withholding but a misunderstanding of what FIRPTA withholding is designed to do and how the final tax is actually calculated.

The Purpose of FIRPTA Withholding

FIRPTA withholding exists to protect U.S. tax collection when a seller does not reside in the United States. Because nonresident sellers may not otherwise file U.S. tax returns, the law requires tax to be collected at the time of sale.

To achieve this, FIRPTA uses a conservative approach. Instead of estimating the seller’s true tax liability, it applies withholding to the gross sales price. This ensures funds reach the IRS, even if the seller never files a return.

This design favors certainty over accuracy. The reconciliation is expected to occur later through the tax filing process.

Why Gross Sales Price Is Used Instead of Profit

Under normal circumstances, U.S. income tax is calculated on net gain. That calculation requires information that is typically unavailable or impractical to verify at closing.

For example, determining true taxable gain requires knowledge of:

• The original purchase price
• Capital improvements made over time
• Depreciation, if applicable
• Selling expenses
• Ownership structure and allocations

None of this information is reviewed or validated at closing. As a result, FIRPTA does not attempt to calculate tax based on profit. Instead, it applies withholding mechanically to the gross sales price.

This is the primary reason FIRPTA withholding frequently exceeds the actual tax owed.

Common Situations Where Withholding Exceeds Tax

Over-withholding is not the exception. It is common, particularly in the following situations.

First, sellers who held property for many years often invested heavily in improvements. While those costs increase the property’s basis, they are ignored for withholding purposes.

Second, sellers who incurred high selling expenses such as commissions, legal fees, or transfer costs often see their net proceeds reduced significantly. FIRPTA does not consider these expenses.

Third, sellers who experienced market declines or unfavorable exchange rates may sell at little or no gain. FIRPTA withholding still applies regardless of economic outcome.

Finally, sellers who qualify for long-term capital gain treatment or have offsetting losses elsewhere may owe far less tax than the amount withheld.

How the Actual U.S. Tax Is Determined

The seller’s real U.S. tax liability is determined only after the transaction is reported on a U.S. income tax return.

At that stage, the seller calculates gain or loss by subtracting adjusted basis and allowable expenses from the sale price. The resulting gain, if any, is then taxed according to the seller’s tax classification and applicable rates.

Only after this calculation does the IRS know whether too much tax was collected.

This is why FIRPTA withholding should be viewed as a deposit, not a final bill.

How Refunds Are Calculated and Issued

When a foreign seller files a U.S. tax return for the year of sale, the FIRPTA withholding is claimed as a tax credit. The credit is applied against the actual tax owed.

If the withholding exceeds the tax liability, the excess becomes refundable.

The IRS does not issue this refund automatically. It is generated only after the return is processed and accepted. Processing time varies and can be affected by documentation quality, completeness of reporting, and IRS workload.

Until the return is filed, the IRS has no basis to determine whether a refund is due.

Why Some Sellers Never Recover Excess Withholding

A common reason refunds go unclaimed is the belief that no filing is required if no tax is owed. In practice, the refund mechanism requires a filed return.

Other sellers encounter problems because they lack proper documentation for basis or improvements. Without support, taxable gain may be overstated.

In some cases, refunds are delayed because the seller did not obtain a required taxpayer identification number in time or filed under the wrong classification.

These issues do not change the underlying tax outcome, but they can significantly slow the recovery process.

Conclusion

FIRPTA withholding is intentionally blunt. It prioritizes collection at the point of sale rather than accuracy at the point of closing. As a result, it often bears little resemblance to the tax actually owed once the transaction is analyzed properly.

Recovering excess withholding requires understanding how the reconciliation process works and following through with accurate U.S. tax reporting. Firms that routinely handle FIRPTA filings and refund claims are familiar with these mechanics and the documentation the IRS expects, which can help ensure the process is handled correctly from start to finish.

This article is for educational purposes only and does not constitute tax or legal advice.