In Illinois, you do not have to register your firearm in the general sense most people mean by that phrase. The state licenses the owner, not the gun: a valid Firearm Owner’s Identification (FOID) card from the Illinois State Police is what proves you’re legally allowed to possess firearms and ammunition, and there is no statewide list where you log each gun you buy. The one real registration requirement sits inside the Protect Illinois Communities Act (PICA), which required owners of certain assault weapons, .50 caliber rifles, and large-capacity magazines to file an endorsement affidavit identifying those items.
How Illinois Tracks Firearms: The Owner, Not the Gun
The Firearm Owners Identification Card Act has been in place since 1968. It requires nearly every Illinois resident who wants to possess or buy a firearm or ammunition to carry a valid FOID card issued by the Illinois State Police.1Illinois State Police Firearms Services Bureau. Frequently Asked Questions The card is a license confirming the state has run a background check and found you eligible. It is not a record of what you own.
That coverage runs beyond guns. Ammunition, stun guns, and tasers all require a valid FOID card to purchase or possess in Illinois.2Illinois State Police. Firearm Owner’s Identification Active-duty law enforcement officers and a few other groups named in the statute are exempt, but for the vast majority of residents, the card is non-negotiable.
Because licensing happens at the person level, buying a rifle or a handgun in Illinois does not create a state registry entry tied to that specific firearm. The practical consequence for most owners: there is nothing to file, nothing to update, and no serial-number list to keep current with Springfield. The exception sits with firearms PICA now regulates.
The PICA Registration Requirement
The Protect Illinois Communities Act, signed into law in January 2023, created the one true firearm registration requirement in Illinois. If you legally possessed a firearm the law now classifies as an “assault weapon,” a .50 caliber rifle, or certain accessories like large-capacity magazines before the law took effect, you were required to register those items by submitting an endorsement affidavit through your FOID account.3Illinois State Police. Protect Illinois Communities Act, Regulation on Assault Weapons
The official deadline was January 1, 2024. The Illinois State Police has confirmed the FOID portal remains open indefinitely for endorsement affidavit submissions, and there are no separate fines or penalties specifically for filing late. That said, the relevant jurisdiction could treat a late submission as invalid or insufficient, and possessing these items without a completed affidavit is a violation of state law.3Illinois State Police. Protect Illinois Communities Act, Regulation on Assault Weapons If you missed the deadline and still have regulated items, filing now is better than not filing.
What the Affidavit Requires
The endorsement affidavit asks for the make, model, and serial number of each regulated firearm you possess. You submit it electronically through your existing FOID card account on the ISP portal. The filing creates a registry for these grandfathered firearms that sits separate from the FOID owner-licensing system. Owners who registered keep possession rights, but PICA restricts where and how those firearms can be used. They cannot be carried in most public places, and they can only be transferred through a federal firearms licensee.
What Counts as an Assault Weapon Under PICA
PICA’s definition is feature-based rather than a simple list of named models. In general terms, the law covers semiautomatic rifles that accept detachable magazines and have features like a pistol grip, folding stock, flash suppressor, or barrel shroud. It also covers semiautomatic pistols with similar features, semiautomatic shotguns with pistol grips or detachable magazines, shotguns with revolving cylinders, and any semiautomatic firearm that accepts belt-fed ammunition.4Illinois General Assembly. Section 1230 Appendix A – List of Assault Weapons
If you’re not sure whether a specific firearm you own falls under the law, the ISP publishes an identification guide for cross-checking makes and models against the regulated categories.5Illinois State Police. Assault Weapon Identification Guide A standard hunting rifle, a bolt-action rifle, a typical pump shotgun, or a conventional handgun without the listed features will not require an affidavit. The affidavit obligation attaches to firearms that match PICA’s feature definitions and that you owned before the law took effect.
Penalty for Possessing a PICA Firearm Without Filing
Possessing a PICA-regulated firearm without a completed endorsement affidavit can be charged as a Class A misdemeanor for a first offense, which carries up to 364 days in jail and a fine of up to $2,500.6Illinois General Assembly. 730 ILCS 5/5-4.5-55 – Class A Misdemeanor Subsequent offenses carry steeper penalties. This is why filing late still matters: the portal remains open, and getting your regulated items on record now closes the gap between what you own and what the state has a legal record of.
Separately, carrying or possessing any firearm without a valid FOID card can be charged as aggravated unlawful use of a weapon, a Class 4 felony on a first offense with a sentence of one to three years in prison. A second offense is a Class 2 felony carrying three to seven years.7Illinois General Assembly. 720 ILCS 5/24-1.6 – Aggravated Unlawful Use of a Weapon That exposure is a licensing problem, not a registration problem, but it’s the other side of how Illinois enforces the system.
Local Ordinances Can Add Registration Requirements
State law explicitly preserves the right of municipalities to impose firearm regulations stricter than the FOID Card Act. Any local ordinance requiring registration or imposing greater restrictions on buying, possessing, or transferring firearms remains valid and enforceable.8Illinois General Assembly. 430 ILCS 65 – Firearm Owners Identification Card Act – 13.1 A valid FOID card does not override a city or county rule.
Some Illinois municipalities have enacted their own bans on certain firearm types or imposed specific storage and transportation rules. Because these ordinances vary from one jurisdiction to the next, checking the rules where you live is worth doing before assuming the state answer is the whole answer. Statewide, you don’t register firearms outside the PICA category. Locally, your city or county might require something more.
The Short Version
If you own ordinary rifles, shotguns, or handguns in Illinois, there is no state registry to file them with. Keep your FOID card valid, follow the rules for how you buy and transfer firearms, and check your local ordinances. If you own something that fits PICA’s definition of an assault weapon, a .50 caliber rifle, or a large-capacity magazine that you had before the law took effect, the endorsement affidavit is how the state requires you to register it, and the portal is still open for that filing.