An arm’s length short sale affidavit is a sworn statement, signed by everyone involved in a short sale, confirming that the buyer and seller are strangers acting independently, that no hidden side deals exist, and that the price on the contract is the real price. Lenders require it because they are agreeing to accept less than the full mortgage balance and want everyone on record, under oath, that the loss is genuine. It is signed under penalty of perjury, and lying on it is a federal crime under 18 U.S.C. § 1014 carrying fines up to $1,000,000 and up to 30 years in prison.1Office of the Law Revision Counsel. 18 USC 1014 – Loan and Credit Applications Generally
What “Arm’s Length” Actually Means
Fannie Mae’s Short Sale Affidavit (Form 191) defines an arm’s length transaction as one “between parties who are unrelated and unaffiliated by family, marriage, or commercial enterprise.”2Fannie Mae. Short Sale Affidavit (Form 191) The concern is straightforward: a below-market sale to a relative, a friend, or a business partner lets the seller effectively keep the property while the lender absorbs the loss. The affidavit closes that door by making every signer swear the relationship does not exist.
The document does more than certify the relationship. It also requires signers to confirm that no higher offer was received and hidden from the lender, and that the purchase price on the affidavit matches the net sheet the lender approved.3American Land Title Association. Short Sale Affidavit If the number on the closing disclosure drifts from the number the lender approved, the deal stalls.
No Side Deals
Side agreements are the biggest trap. Any arrangement outside the official closing has to be disclosed and, in most cases, is prohibited outright. That includes cash paid outside escrow, promises to lease the property back to the seller, and any understanding that the buyer will later reconvey title. Every payment to any person or entity connected to the sale must appear on the settlement statement and be approved by the servicer.2Fannie Mae. Short Sale Affidavit (Form 191)
The specific form varies. Some lenders use Fannie Mae’s Form 191 as the template; others provide their own version through their loss mitigation department. The core representations are consistent across them: no hidden relationships, no undisclosed payments, no secret arrangements.
Who Has to Sign
The affidavit reaches further than just the two principals. Both the buyer and the seller sign to confirm they are not related by blood, marriage, or shared business ventures. The listing agent and the buyer’s agent also sign, certifying they have no undisclosed interest in the property beyond their standard commission. That signature blocks the scenario where an agent quietly buys the property through a straw purchaser at a discount.
Fannie Mae’s Form 191 adds a signature line for a “Transaction Facilitator,” which covers third-party short sale negotiators, transaction coordinators, and anyone else who assisted in the deal.2Fannie Mae. Short Sale Affidavit (Form 191) Even an intermediary who takes no commission has to acknowledge the arm’s length requirements, because someone managing the paperwork is well-positioned to arrange the kind of side deal the affidavit exists to prevent.
If the buyer is a corporate entity like an LLC or a trust, the person signing must have legal authority to bind that entity. All names on the affidavit need to match the purchase agreement and the loan payoff documents.
Payments to the Seller and Staying in the Home
Sellers sometimes receive a relocation incentive from the servicer to encourage cooperation with the short sale. The affidavit permits this only where the servicer has offered and approved the payment, and it must show up on the settlement statement.2Fannie Mae. Short Sale Affidavit (Form 191) Any other payment to the seller violates the affidavit.
Post-closing occupancy is the other common question. Under Fannie Mae’s standard terms, the seller may stay as a tenant for up to 90 days to facilitate relocation, but no longer.2Fannie Mae. Short Sale Affidavit (Form 191) Any agreement to stay past that window, or any understanding that the seller will later reacquire the property, breaks the affidavit. Lenders enforce this hard, because the point of a short sale is a clean break between the distressed borrower and the property.
Resale Restrictions on the Buyer
Fannie Mae’s servicing guidelines require a deed restriction preventing the buyer from reselling the property at any price during the first 30 days after closing. For the next 60 days after that, the buyer cannot resell at more than 120% of the short sale price.4Fannie Mae. Fannie Mae Short Sale These restrictions run with the land, so they bind any subsequent owner during the restricted period. The purpose is to keep investors from buying a short sale at a deep discount and immediately flipping it for a profit the lender could have captured.
How the Affidavit Is Signed and Delivered
Each signer executes the affidavit in front of a notary public who verifies identity, witnesses the signature, and applies an official seal. This usually happens during the closing window, within a few days of the scheduled transfer. An affidavit signed too far in advance can be rejected by the lender’s underwriting team as stale.
After notarization, the title company or escrow officer packages the affidavit with the rest of the closing documents and sends it to the servicer. Electronic delivery is common for initial review; many lenders still require physical originals by secure courier. The sale cannot officially close until the lender receives, reviews, and approves the affidavit alongside the settlement statement. Notary fees for acknowledgments are modest, typically between $2 and $25 per signature depending on where closing happens.
What Happens If You Lie on It
Because the affidavit is executed under penalty of perjury, misrepresenting a material fact can trigger federal prosecution under 18 U.S.C. § 1014, which covers false statements made to influence federally insured financial institutions. That reaches virtually every mortgage lender. The maximum penalties are a fine of up to $1,000,000, imprisonment for up to 30 years, or both.1Office of the Law Revision Counsel. 18 USC 1014 – Loan and Credit Applications Generally
Criminal exposure is not the only risk. Lenders can sue to claw back the deficiency balance they forgave based on the false affidavit. If a court finds that the buyer and seller colluded, the entire short sale agreement can be rescinded, which can lead to a foreclosure action against the property even after title has changed hands. Real estate agents caught up in the scheme face license revocation on top of the criminal and civil exposure; state licensing boards treat mortgage fraud as grounds for expedited revocation, and reinstatement after a conviction is extremely unlikely.
Two Things the Affidavit Does Not Handle
Sellers often assume the affidavit resolves the deficiency and the tax consequences. It does not. A short sale does not automatically eliminate the seller’s remaining debt; whether the lender can pursue you for the shortfall depends on state law and on what the short sale approval letter says. Get the deficiency waiver in writing from the lender before closing, because without it a completed short sale can still be followed by a lawsuit for the balance.
Taxes are a separate track. When a lender forgives $600 or more of mortgage debt, it reports the canceled amount to the IRS on Form 1099-C, and canceled debt is generally taxable income.5Internal Revenue Service. Instructions for Forms 1099-A and 1099-C Exclusions may apply, including one for insolvency and, for debt discharged before January 1, 2026 or under a written arrangement entered into before that date, one for qualified principal residence debt up to $750,000 ($375,000 if married filing separately).6Office of the Law Revision Counsel. 26 USC 108 – Income From Discharge of Indebtedness Those are questions for a tax preparer once you have the 1099-C in hand; the affidavit itself does not address them.