Illinois Firearm Bill of Sale: Requirements, Waiting Period, Penalties

An Illinois firearm bill of sale is the written record a private seller must create when transferring a gun to another private party, and state law dictates exactly what it has to contain, how the buyer’s eligibility gets verified, and how long you have to keep the document. Get the paperwork right and the transfer is legal; skip a step and you are looking at a Class 4 felony.

What the Bill of Sale Must Contain

Illinois does not publish an official form, but 430 ILCS 65/3(b) spells out what your transfer record has to include.¹ At a minimum:

The date of the transfer (the day the firearm actually changes hands).
The date the buyer applied to purchase the firearm, for any transfer on or after January 1, 2006.
A description of the firearm: manufacturer, model, caliber or gauge, and serial number. If there is no serial number, include other identifying information.
The buyer’s FOID card number, copied from the physical card.
The Illinois State Police approval number generated for the transaction, if you verified the buyer through the ISP portal rather than through a licensed dealer.

If the sale happens at a gun show, the record also has to carry the show’s unique identification number.¹

Everything above is what the statute demands. Beyond that, sensible practice is to write in the full legal names and addresses of both parties and have buyer and seller sign and date the document. Those extras are not required, but they turn a bare statutory record into something you can actually rely on if a question comes up years later. Handwritten works. Typed works. What matters is that every required field is legible.

Verifying the Buyer Before You Write Anything Down

You cannot legally hand over a firearm in Illinois unless the buyer shows a currently valid FOID card or a valid Illinois concealed carry license at the time of the transfer.¹ An expired card, a photocopy, or someone else’s card does not count. And a card that looks valid on its face can still be revoked, so the seller has to confirm current status through one of two methods.

The ISP Person-to-Person Transfer Portal

The Illinois State Police Firearms Services Bureau runs an online verification system.² You enter your own FOID number along with the buyer’s FOID number and date of birth. The system checks state and federal databases and, if the buyer is cleared, issues an approval number for that specific transaction. That number is valid for 30 days.¹ Write it on the bill of sale. It is a required field and it is your proof that you did the check.

Going Through a Federally Licensed Dealer

You can also bring the firearm to a federal firearms licensee and let them run the transfer. The dealer does the background check and handles the paperwork. The buyer has 10 days to provide the transfer record to the FFL, and the dealer keeps it for 20 years instead of the seller keeping it for 10. Dealers may charge up to $25 for the service.¹ For a seller who does not want to store records for a decade, that fee buys peace of mind.

The 72-Hour Waiting Period

Illinois requires 72 hours to pass between the buyer’s application to purchase and the actual delivery of the firearm. This applies to every private transfer, whether the firearm is a handgun, rifle, or shotgun.³ There is no shorter clock for long guns.

The 72 hours starts when the buyer applies, which for private sales generally means the moment you submit the FOID verification. The ISP approval may come back within minutes, but you still cannot deliver the firearm until the three days are up. Verification and the waiting period are separate requirements, and both have to be satisfied. A few narrow exceptions exist for transfers to law enforcement officers and to federal licensees. Private citizen to private citizen sales get no exception.³

How Long to Keep the Record

If you ran the verification through the ISP portal, you have to keep the transfer record for at least 10 years from the date of the sale.¹ A peace officer can ask to see it during that window, and you have to produce it. Failing to record the approval number on the document is a petty offense by itself. Being unable to produce the whole record during an investigation is a much bigger problem.

The record does not get filed with any state agency. You just have to have it when asked. A fireproof safe, a locked cabinet, or a scanned copy backed up somewhere reliable all work. Keeping both a paper and a digital copy is the safest bet over a ten-year horizon.

Penalties for a Botched Transfer

Delivering a firearm before the 72-hour waiting period ends is a Class 4 felony under 720 ILCS 5/24-3.³ A Class 4 felony in Illinois carries a prison sentence of one to three years,⁴ with fines available under general sentencing provisions. Transferring a firearm without verifying the buyer’s FOID card carries the same Class 4 felony classification. The statute lumps the transfer violations together, so whether you skipped the wait, skipped the check, or both, the felony exposure is the same.

Federal Rules You Still Have to Follow

Illinois requirements sit on top of federal law, not in place of it. Even a perfectly documented Illinois transfer can violate the Gun Control Act.

Under 18 U.S.C. § 922(d), you cannot sell or transfer a firearm to anyone you know or have reason to believe is in a prohibited category. Federal law bars firearm possession by people convicted of crimes punishable by more than one year in prison, people subject to domestic violence restraining orders, people convicted of misdemeanor domestic violence, unlawful drug users, people involuntarily committed to a mental institution, and several other groups.⁵ The ISP check catches many of these, but the check does not excuse selling to someone you personally know is prohibited.

The bigger trap for Illinois sellers is the out-of-state buyer. Under 18 U.S.C. § 922(a)(5), an unlicensed person may not transfer a firearm to another unlicensed person if the seller knows or has reasonable cause to believe the buyer lives in a different state. Illinois borders six states, so this comes up often. If the buyer lives in Indiana, Wisconsin, Iowa, Missouri, Kentucky, or anywhere else, the only legal path is to ship the firearm to a federally licensed dealer in the buyer’s home state and let them complete the transfer there. Narrow exceptions exist for firearms received by inheritance and for temporary loans for lawful sporting purposes, but neither covers an ordinary private sale.⁶

A straw purchase, where someone buys the firearm on behalf of a person who could not pass a background check, is a separate federal crime under 18 U.S.C. § 932 and § 933, with a maximum penalty of 15 years in prison and a $250,000 fine. If the firearm is later used in a violent felony, terrorism, or drug trafficking, the maximum climbs to 25 years.⁷ If anything about the transaction suggests the buyer is fronting for someone else, walk away.

1
Illinois General Assembly. Illinois Code 430 ILCS 65/3 – Requisites for Transfer
2
Illinois State Police. Firearms Services
3
Illinois General Assembly. Illinois Code 720 ILCS 5/24-3 – Unlawful Sale or Delivery of Firearms
4
Illinois General Assembly. Illinois Code 730 ILCS 5/5-4.5-45 – Class 4 Felonies Sentence
5
Bureau of Alcohol, Tobacco, Firearms and Explosives. Identify Prohibited Persons
6
Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
7
Bureau of Alcohol, Tobacco, Firearms and Explosives. Don’t Lie for the Other Guy