When you sell a house, Form 1099-S is sent by the closing agent handling your transaction — in most sales that means the title company, escrow officer, or closing attorney who disburses the funds. They file the form with the IRS and mail your copy. If no closing agent is involved, the filing duty falls through a hierarchy that can land on the mortgage lender, a broker, or even the buyer.
What the Form Actually Reports
Form 1099-S, Proceeds From Real Estate Transactions, is an informational return telling the IRS that a property changed hands and how much the seller received. It shows the closing date, the gross proceeds, and basic information about the property and parties. It does not show your profit or loss. Only the total you received or were credited at closing.
Gross proceeds include cash paid to you, the outstanding balance of any mortgage the buyer assumed, and the principal amount of any promissory note you accepted. If part of your payment came as property or services rather than money, the closing agent checks a separate box rather than assigning a dollar value.1Internal Revenue Service. Instructions for Form 1099-S Proceeds From Real Estate Transactions That figure matters because the IRS compares it to the sale price on your return, and mismatches tend to generate letters.
Who Files by Default
The person legally required to file Form 1099-S is whoever is responsible for closing the transaction and disbursing funds. In almost every ordinary sale, that is a title company, escrow officer, or closing attorney. They file with the IRS and furnish the seller’s copy.2eCFR. 26 CFR 1.6045-4 – Information Reporting on Real Estate Transactions
Parties to a sale can also sign a written designation agreement at or before closing that assigns the filing duty to any party already in the reporting hierarchy. In practice this is uncommon; the closing company simply does it as part of its work.
When There Is No Closing Agent
Private sales don’t always involve a title company, and the rule accounts for that. If no one is handling a formal closing, the filing obligation moves down a specific order: first to the mortgage lender providing new financing to the buyer, then to the seller’s broker, then to the buyer’s broker, and finally to the buyer.3Internal Revenue Service. Instructions for Form 1099-S
For a for-sale-by-owner deal, that means the buyer’s lender files the 1099-S if the buyer is financing the purchase. If there is no lender and no broker on either side, the buyer is the filing party by default. Most buyers in that spot don’t know this, which is why private, all-cash sales are the ones that most often produce a missing 1099-S and an IRS follow-up down the line.
When You Won’t Receive One at All
Not every home sale generates a 1099-S. Many primary-residence sales are exempt from reporting entirely, and the exemption does not depend on the sale price. A house that sells for $800,000 can be exempt as long as the seller’s full gain qualifies for exclusion under Section 121, the home-sale exclusion.2eCFR. 26 CFR 1.6045-4 – Information Reporting on Real Estate Transactions
To trigger the exemption, you must give the closing agent a written certification, signed under penalty of perjury, stating two things: that the property is your principal residence, and that the entire gain is excludable from gross income under Section 121. The closing agent must keep that certification on file for four years. If the home has multiple owners, each owner must provide a separate certification, or the closing agent must file a 1099-S for any owner who does not certify.
Other transactions exempt from 1099-S reporting include transfers to corporations or government entities, sales where the total consideration is under $600, and transactions that aren’t treated as sales or exchanges, such as gifts or inheritances.
One point worth being clear on: the closing agent’s decision not to file a 1099-S does not relieve you of reporting the sale on your own return. If you have a taxable gain, you owe the tax whether or not a 1099-S was ever issued. The certification only controls the paperwork between the closing agent and the IRS.
When You Should Receive It
If your sale is reportable, the closing agent must furnish your copy of the 1099-S by January 31 of the year after the sale. The form is due to the IRS by February 28 on paper, or March 31 electronically.4Internal Revenue Service. Publication 1099 General Instructions for Certain Information Returns Filers submitting 10 or more information returns in a calendar year must file electronically.5Internal Revenue Service. Topic No. 801, Who Must File Information Returns Electronically
If January 31 comes and goes and you were expecting a 1099-S, start with the closing agent. Most title and escrow companies simply forget to mail a copy or send it to an outdated address; they can reissue quickly. If you sold without a closing agent, work through the hierarchy above to identify who should have filed, and ask them for a copy. You will need the figure to prepare your return regardless of whether the paper arrives.
The Backup Withholding Trap
If you don’t give the closing agent your taxpayer identification number — usually your Social Security number — at or before closing, the closing agent is required to withhold 24% of the gross proceeds and send it to the IRS as backup withholding.4Internal Revenue Service. Publication 1099 General Instructions for Certain Information Returns You get credit for the withheld amount when you file, but the cash is out of reach until then. This is one of the more unpleasant surprises for sellers who signed closing paperwork without reading the certification requests.
What to Do When Your 1099-S Arrives
Compare the gross proceeds on the form to what you actually received at closing, including any mortgage the buyer assumed and any promissory note you accepted. Small differences are worth resolving with the closing agent before you file; a corrected 1099-S is easier than answering an IRS notice later.
You report the sale on Form 8949, Sales and Other Dispositions of Capital Assets, which flows into Schedule D of your Form 1040.6Internal Revenue Service. Instructions for Form 8949 Form 8949 is where the IRS reconciles the gross proceeds figure on the 1099-S with the gain or loss you calculate from your basis and selling expenses.
If you qualified for the full Section 121 exclusion and your gain falls entirely within the exclusion, you generally don’t have to report the sale on your return — but only if no 1099-S was issued. If a 1099-S was issued, report the sale on Form 8949 even when the entire gain is excluded, so the IRS can match the form to your return without sending a letter asking where it went.
Penalties on the Filer Side
Closing agents who miss the deadline or file incorrectly face per-return penalties that scale with how late the fix comes:
- Up to 30 days late: $60 per return
- 31 days late through August 1: $130 per return
- After August 1 or never filed: $340 per return
- Intentional disregard: $680 per return with no maximum cap
These figures apply to returns due in 2026.7Internal Revenue Service. Information Return Penalties Sellers don’t pay these; the filer does. What sellers face is a separate accuracy-related penalty of 20% of any underpaid tax if the IRS finds the gain was negligently calculated, rising to 40% for a gross valuation misstatement such as sharply inflating basis to shrink the gain.8Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments Keeping your purchase records, receipts for improvements, and any depreciation history is the simplest protection against both the penalty and the audit that produces it.