Idaho Age Requirements for Firearms: The Complete Legal Reference

Before getting into Idaho-specific rules, you need to understand the federal baseline, because federal law applies in Idaho whether the state law says anything about it or not.

Federal law splits the world into two categories: handguns and long guns. Per 18 U.S.C. § 922(b)(1) and (c)(1), a federally licensed firearms dealer (FFL) cannot sell a handgun or handgun ammunition to anyone under 21. For long guns -- rifles and shotguns -- the FFL floor is 18.

Private (unlicensed) sellers operate under different federal rules. Under 18 U.S.C. § 922(x), unlicensed sellers may not transfer a handgun to anyone they know or have reasonable cause to believe is under 18. There is no federal minimum age for an unlicensed seller to transfer a long gun.

The Law: 18 U.S.C. § 922(b)(1) -- Licensed dealers may not sell a handgun to any person under 21. 18 U.S.C. § 922(x)(1) -- Unlicensed persons may not transfer a handgun to any person under 18.

This distinction between dealer and private sales is what creates the two-tier system you see in the table below. Idaho does not add a state-level purchase age requirement on top of federal law, but federal minimums still apply to every dealer sale in the state.

Idaho does not impose a state-specific minimum purchase age for firearms beyond what federal law already requires. According to Giffords Law Center, Everytown Research, and the NRA-ILA, Idaho has not adopted a minimum purchase age policy above the federal floor. That means dealer sales in Idaho follow federal minimums, and private sales in Idaho are governed by the federal private-transfer rules.

Key Point: Per Ammo.com's 2026 state guide, Idaho residents can purchase a long gun or handgun at 18 through a private seller. The 21-year minimum on handgun purchases applies only to dealer transactions under federal law.

Idaho state law reinforces the private-transfer side by making it a crime to sell, directly or indirectly, a firearm to a minor under the age of 18 without the written consent of the parent or guardian of that minor. Per Idaho Code Ann. § 18-3302A, that prohibition covers private sales as well as dealer transactions at the state level.

Purchase age and possession age are two different questions -- and Idaho addresses them separately in statute.

Under 12

Any person under 12 in possession of a weapon must be accompanied by an adult. Per Idaho Code Ann. § 18-3302E(2), no person under 12 shall have possession of any shotgun, rifle, or other firearm while in the fields or forests or in any tent, camp, auto, or other vehicle in Idaho. There is a narrow exception: a youth small game license holder or youth hunter education graduate license holder, if accompanied by an adult licensed to hunt in Idaho, may possess a firearm while hunting in the fields or forests. Per Idaho Code Ann. § 18-3302G, possessing a weapon while under 12 requires adult accompaniment.

Ages 12 to 17

Under Idaho Code Ann. § 18-3302E(1), anyone under 18 is prohibited from possessing a weapon -- defined to include any pistol, revolver, or gun -- unless:

• They have written permission from a parent or guardian to possess the weapon, or
• They are accompanied by a parent or guardian while in possession

A separate statute, Idaho Code Ann. § 18-3302F(1), specifically prohibits any person under 18 from possessing a handgun, or from possessing (except as provided by federal law) a sawed-off rifle, sawed-off shotgun, or a fully automatic weapon.

Key Point: Idaho's statute creates a misdemeanor for under-18 possession without parental permission or accompaniment. The handgun prohibition at § 18-3302F(1) is a separate, distinct restriction from the general weapons prohibition at § 18-3302E.

Exceptions to Possession Restrictions for Minors

The possession prohibitions do not apply across the board. According to Giffords Law Center citing Idaho Code, the exceptions include:

• A patron firing at a lawfully operated target concession at an amusement park or similar location, where the firearm is firmly chained or affixed to the counter
• A person attending a hunter's safety course or firearms safety course, including while traveling to or from those activities with an unloaded firearm
• A person engaging in practice or lawful use of a firearm at an established range or any other area where discharge is not prohibited by state or local law, including travel to and from with an unloaded firearm
• A person participating in organized competition involving a firearm, or practicing for such competition, including travel to and from with an unloaded firearm
• A minor under 18 on real property with the permission of the owner, licensee, or lessee, who also has permission from a parent or legal guardian or the property owner to possess a firearm not otherwise in violation of law, including travel to and from with an unloaded firearm
• Resident or non-resident hunters with a valid hunting license or persons lawfully engaged in hunting, including travel to and from with an unloaded firearm

Ages 18 to 20

At 18, an Idaho resident can legally possess firearms without parental permission or accompaniment. They can purchase long guns from a dealer (federal floor: 18) and handguns through private sales (federal private-transfer floor: 18). They cannot purchase a handgun from an FFL dealer until they turn 21 -- that's federal law, not Idaho's.

The 18-to-20 bracket also has specific carry implications covered in the next section.

21 and Over

Full purchase and possession rights under both state and federal law. The full suite of Idaho carry options -- including the standard concealed carry license and enhanced license -- becomes available.

Idaho's carry law has multiple tiers based on age, and this is where the 18-to-20 bracket gets complicated.

Open Carry

Open carry is legal in Idaho. Per Idaho Code Ann. § 18-3302(4)(a) and (b), the concealed weapons law explicitly excludes "any deadly weapon located in plain view" and "any lawfully possessed shotgun or rifle" from its restrictions. Open carry has no minimum age restriction imposed by Idaho statute beyond the general possession rules (18 without parental permission, as described above).

Permitless (Constitutional) Carry

As of July 1, 2019, Idaho law allows concealed carry without a license for persons over 18 under Idaho Code Ann. § 18-3302(4)(f) and § 18-3302(20). Specifically:

• Outside city limits: Persons over 18 who are not otherwise disqualified from being issued a license may carry concealed without a permit
• Inside city limits: Persons over 18 who are U.S. citizens or current members of the U.S. armed forces, and who are not otherwise disqualified, may carry concealed without a permit

This is a meaningful distinction. The 2019 expansion brought permitless carry inside city limits for qualifying adults 18 and over. Source 9 (snippet only) references Idaho residents 18 and older being allowed to carry a concealed handgun -- consistent with the NRA-ILA and Giffords sources on the 2019 law.

Key Point: Idaho permitless carry is available to adults 18 and over who are not disqualified -- but the standard concealed carry license requires age 21. The provisional license (discussed below) bridges that gap for 18-to-20-year-olds who want an official credential.

Standard Concealed Carry License

Per Idaho Code Ann. § 18-3302(7) and the NRA-ILA summary:

Idaho is a shall-issue jurisdiction. The sheriff must issue the license if the applicant meets the objective criteria -- there's no discretionary denial.

Enhanced Concealed Carry License

The enhanced license under Idaho Code Ann. § 18-3302K requires age 21 and an 8-hour in-person training course (including live fire) completed within the year before application. The payoff: enhanced license holders can carry on public college and university campuses (with specific exceptions for dormitories and posted entertainment facilities), whereas standard license holders cannot.

Enhanced license holders must also have a minimum six-month Idaho residence unless they hold a valid carry license from their state of residence.

Provisional License (Ages 18-20)

This is the option most relevant to adults in the 18-to-20 bracket who want a formal carry credential. Under Idaho Code Ann. § 18-3302(20), a county sheriff is authorized to issue a provisional license to applicants aged 18 to 21 who -- except for the age requirement -- would otherwise qualify for an enhanced license.

A provisional license expires on the holder's 21st birthday, at which point the holder can reapply for an enhanced license using the renewal process.

Key Point: The provisional license gives 18-to-20-year-olds access to the same campus carry privileges as enhanced license holders. If you're 19 and a college student who wants to carry on campus, the provisional license is your path -- permitless carry does not cover campus buildings.

Idaho does not regulate or restrict ammunition generally. However, there are age-specific restrictions.

Per Idaho Code Ann. § 18-3308, it is a crime to sell or give to any minor under the age of 16 any gunpowder of any description or any shells or fixed ammunition of any kind -- except shells loaded for use in shotguns and shells or cartridges for use in rifles of .22 caliber or smaller -- without the written consent of the parents or guardian of the minor.

In plain terms: shotgun shells and .22 rimfire ammo can be sold to minors under 16. Everything else requires parental written consent for buyers under 16. There is no state restriction on ammunition sales to adults 18 and over.

The statutes that create criminal liability for sellers and transferors are worth knowing if you're on the giving end of any transaction involving a minor.

Per Idaho Code Ann. § 18-3302A: It is a crime to sell, directly or indirectly, a firearm to a minor under 18 without the written consent of the parent or guardian.

Per Idaho Code Ann. § 18-3308: It is a crime to sell or give to any minor under 16 any firearm, gunpowder, or ammunition (with the shotgun shell/.22 exception noted above) without written parental consent.

Per Idaho Code Ann. § 18-8505: Supplying, selling, or giving possession of a firearm to a person knowing they are a gang member is a separate crime regardless of age.

Age rules interact with location restrictions. Even if you're old enough to carry, these places restrict it:

• Courthouses, juvenile detention facilities, and jails: Concealed carry generally prohibited under Idaho Code Ann. § 18-3302C
• Public and private elementary and secondary schools: Possession on school grounds or in school buildings is prohibited under Idaho Code Ann. § 18-3302D, with narrow exceptions for locked firearms in vehicles and school-authorized personnel
• College and university campuses: Subject to campus rules under Idaho Code Ann. § 18-3309; enhanced license and provisional license holders may carry in most campus buildings, but not dormitories or posted entertainment facilities
• Private property: Property owners, employers, and businesses may prohibit carry on their property under Idaho Code Ann. § 18-3302(25); this does not apply to state-owned property normally open to the public unless the use is a private, admission-charged, or restricted-access event

Idaho does not impose state-level restrictions on NFA items. Per the NRA-ILA, Idaho does not have laws restricting "assault weapons," "large capacity" magazines, machine guns, personally made/unserialized firearms, or accelerators (bump stocks, forced reset triggers).

Federal NFA rules still apply. Short-barreled rifles (barrel under 16 inches), short-barreled shotguns (barrel under 18 inches), suppressors, machine guns, and destructive devices require federal registration and the applicable NFA tax stamp process. Idaho state law does not add a layer on top of that.

Key Point: If you're 18-to-20 and want to purchase an NFA item through a dealer, the federal age restriction for handguns (21 for dealer transfers) would apply to NFA handgun-based items. A suppressor or SBR on a long gun platform gets more nuanced -- consult an attorney for your specific situation.

Idaho has full preemption of local firearms laws. Per Idaho Code Ann. § 18-3302J, unless specifically authorized by state law, no county, city, agency, board, or other political subdivision may adopt or enforce any law, rule, regulation, or ordinance that regulates in any manner the sale, acquisition, transfer, ownership, possession, transportation, carrying, or storage of firearms or any element relating to firearms, including ammunition.

Cities and counties can regulate the discharge of firearms within their boundaries, but those ordinances cannot restrict lawful self-defense discharge, hunting, discharge by a landowner and guests on their own land (when it won't endanger others), or shooting at a lawful sport shooting range.

Practical implication: Boise can't pass its own minimum age ordinance stricter than state law. What you read here applies statewide.

Idaho does not have a red flag law. Per the NRA-ILA: "Idaho does not have a 'red flag' law." There is no Extreme Risk Protection Order (ERPO) process in Idaho as of the sources reviewed for this article.

Idaho does not require background checks for private sales. Federal law requires FFLs to run a NICS (National Instant Criminal Background Check System) check on all sales, including at gun shows. Private (unlicensed) sales in Idaho are not subject to a state-mandated background check.

Idaho does not require a license or permit to possess or acquire a firearm. The state constitution, Article I, Section 11, explicitly prohibits "licensure, registration or special taxation on the ownership or possession of firearms or ammunition."

Age requirements become moot if you're a prohibited person. Idaho's prohibited persons law covers:

• Persons with felony convictions in any jurisdiction, per Idaho Code Ann. § 18-3316 (with exceptions for expunged/pardoned convictions where firearm rights have been restored)
• Minors under 18 possessing without parental permission, per §§ 18-3302E and 18-3302F
• Persons under the influence of alcohol or drugs while carrying concealed, per Idaho Code Ann. § 18-3302B
• All persons prohibited under federal law (fugitives, unlawful drug users, those adjudicated mentally defective, dishonorable discharge recipients, illegal aliens, persons under certain protection orders, domestic violence misdemeanants, etc.) -- these apply through Idaho Code Ann. § 18-3302(11)

Idaho sits in the middle of the national spectrum -- more permissive than states that have raised all purchase ages to 21, more restrictive than states with essentially no age limits on private transfers.

This section is relevant to adults 21 and over holding an Idaho concealed carry license traveling to other states, and to out-of-state permit holders coming to Idaho.

Per NRA-ILA's Idaho page (with the caveat that reciprocity agreements change frequently):

Key distinctions Idaho makes between license types:

• Enhanced license: Recognized by Delaware, Minnesota, Nevada, Washington State, and Wisconsin (enhanced only)
• Standard resident license: Recognized by Colorado, Florida, Maine, Michigan, New Hampshire, and North Dakota (resident permits only)
• All other states: Recognition status varies; check current agreements before traveling

For inbound travelers: Idaho honors all other states' resident and non-resident permits/licenses. Any person with physical possession of a valid license or permit from another state is exempt from the Idaho license requirement under Idaho Code Ann. § 18-3302(5)(g). Non-residents can also apply for an Idaho carry license -- the state does not distinguish between resident and non-resident licenses.

Key Point: Out-of-state permit holders must have their state permit physically on them when carrying in Idaho. The NRA-ILA notes this requirement from Idaho Code § 18-3302(5)(g).

The Law: "Out-of-state residents must have their state concealed weapons license/permit on their person when carrying a concealed weapon in Idaho." -- Idaho Code Ann. § 18-3302(5)(g)

For the most current reciprocity status, check with the Idaho Sheriffs' Association and the issuing authority in each destination state before you travel. Reciprocity agreements change without notice.

Idaho's constitutional protection for firearms is stronger than the federal Second Amendment in some respects. Article 1, Section 11 of the Idaho Constitution reads:

"The people have the right to keep and bear arms, which right shall not be abridged; but this provision shall not prevent the passage of laws to govern the carrying of weapons concealed on the person, nor prevent passage of legislation providing minimum sentences for crimes committed while in possession of a firearm, nor prevent passage of legislation providing penalties for the possession of firearms by a convicted felon, nor prevent the passage of legislation punishing the use of a firearm. No law shall impose licensure, registration or special taxation on the ownership or possession of firearms or ammunition. Nor shall any law permit the confiscation of firearms, except those actually used in the commission of a felony."

The explicit prohibition on licensure, registration, and special taxation is baked into the state constitution -- not just statute. That's harder to undo than a legislative change.

Per the NRA-ILA, House Bill 621 -- a concealed carry clarification bill -- was introduced in the Idaho House State Affairs Committee as of March 2, 2026. The Idaho Legislature convened its 2026 session on January 12, 2026. The sources do not provide enough detail on HB 621's specific provisions to summarize its effect on age requirements. Monitor the Idaho Legislature's website and NRA-ILA Idaho updates for developments.

The bottom line: Idaho follows federal minimums on purchase ages -- 21 at a dealer for handguns, 18 for long guns -- and adds state-law protection against selling any firearm to a minor under 18 in private sales. Adults 18 and over have permitless carry rights and access to the provisional license, which puts Idaho among the more permissive states for younger adults who aren't prohibited persons.

• http://giffords.org/lawcenter/state-laws/minimum-age-to-purchase-possess-in-idaho/
• https://ammo.com/research/minimum-age-to-purchase-a-gun
• https://everytownresearch.org/rankings/law/minimum-age-to-purchase/
• https://www.nraila.org/gun-laws/state-gun-laws/idaho/
• https://18inidaho.org/firearms
• https://www.ammunitiondepot.com/blog/how-old-do-you-have-to-be-to-buy-a-gun-state-by-state
• https://giffords.org/lawcenter/gun-laws/policy-areas/who-can-have-a-gun/minimum-age/

Last Updated: March 05, 2026