Do Cigarettes Expire?

SURGEON GENERAL’S WARNING: Smoking Causes Lung Cancer, Heart Disease, Emphysema, and May Complicate Pregnancy.

Cigarettes do not carry an expiration date in the United States, and no federal or state law requires one. They do age: tobacco loses moisture and its constituents oxidize once the pack is opened, and more slowly before that. This page covers what the law requires on a pack, what the codes on the bottom mean, what happens to tobacco over time, and the one thing age does not change.

Last verified September 11, 2026. Sources at the end.

Why there is no expiration date

Two federal agencies regulate what is printed on a cigarette pack, and neither asks for a date. The FDA’s rules (21 CFR parts 1140 and 1141) set the warning labels, the minimum pack size and the sales restrictions. The Alcohol and Tobacco Tax and Trade Bureau’s rules (27 CFR 40.212 and 40.215) require the manufacturer’s name and factory or permit number, the word “cigarettes,” the quantity, and the tax class, which is why every pack says something like “20 Class A Cigarettes.” A state tax stamp on the bottom shows the excise tax was paid. Nothing in any of that is a manufacture or sell-by date. Some countries do print a production date, and some manufacturers do so voluntarily for export markets, but US packs are not required to.

The code on the pack

What US packs do carry is a production or lot code, usually stamped or inkjet-printed on the bottom or the side of the pack and on the carton. It identifies the plant, the line and the production date so a manufacturer can trace a batch. Each company uses its own format and none of the major US manufacturers publishes a key, so the guides online that claim to decode them are guesswork. If you need the production date of a specific pack, the manufacturer’s consumer line can read the code for you.

What happens to tobacco over time

Cigarette tobacco leaves the factory at a controlled moisture content and is sealed under a foil liner and cellophane to hold it there. Tobacco is hygroscopic: it gives up moisture to dry air and takes it on from humid air. Once the cellophane and foil are opened, the tobacco begins to equilibrate with the room, drying out in most indoor conditions within days to weeks. Dry tobacco burns faster and crumbles; tobacco that has taken on moisture burns unevenly and can mold. The compounds that give tobacco its character also oxidize slowly on contact with air, which is the same process that changes the character of any dried plant material left open. Sealed packs age far more slowly than opened ones, and manufacturers and distributors rotate stock so that what reaches a retailer is typically weeks to a few months from production.

The physical signs of an old pack are the ones you would expect: brittle, loose tobacco, a cigarette that burns hot and fast, and paper that has yellowed. A sealed pack stored somewhere cool and dry, out of sunlight, will show those signs later than an opened one on a windowsill.

What age does not change

The health risk. There is no research suggesting that a fresh cigarette is safer than an old one or the reverse, and the warnings printed on the pack apply on the day it was made and on any day after. Age changes how a cigarette burns and handles, not what smoking it does.

Related: How Many Cigarettes Are in a Pack? and Why Do Some Cigarettes Smell Worse Than Others?

Sources

• eCFR, 21 CFR Part 1140 and 21 CFR Part 1141
• eCFR, 27 CFR 40.212 and 27 CFR 40.215 (TTB package marks and notices)
• Texas Tax Code, Chapter 154, Subchapter C (tax stamps)