Form 1099-S Filing Deadline for 2026

What happens if you miss the 1099-S filing deadline?

Missing the 1099-S deadline, or filing incorrect information, can result in penalties. The penalty generally depends on how late you file a correct return or furnish a correct statement.

Penalties for Late or Incorrect Filing

Learn more about 1099-S penalties.

Do I need to file Form 1099-S for the sale of a principal residence?

Not always. You are not required to report the sale of a principal residence for 250,000 or less (500,000 or less for married sellers) if you receive a valid written certification from the seller. The certification must confirm that the full gain is excludable. You can obtain it any time on or before January 31 of the year after the sale. Without the certification, you must file and furnish Form 1099-S.

Can I get an extension to file Form 1099-S?

Yes. Form 1099-S qualifies for an automatic 30-day extension. File Form 8809 electronically or by paper on or before the original due date to receive it. If you need more time to furnish transferor copies, you can request a separate extension with Form 15397.

Tips to meet the Form 1099-S deadline

• Collect the transferor's TIN at closing

  You must request the transferor's TIN no later than the time of closing. Use Form W-9 for U.S. persons, and keep it in your records for 4 years.

• Request an allocation for multiple transferors

  When a property has more than one seller, ask for an allocation of gross proceeds at or before closing. You must file a separate Form 1099-S for each transferor.

• Capture digital asset details during the transaction

  If the contract provides for payment in digital assets, record the asset name, units, value, and date at closing. This avoids gaps when you complete boxes 2c and 8a through 8d.

• Build in time for IRIS if you are transitioning from FIRE

  The IRS is retiring the FIRE system, and the last day to file through FIRE is November 19, 2026. IRIS will be the only e-filing system for information returns during the 2027 filing season. Complete your IRIS setup early so you have time to resolve validation or filing issues before the deadline.