Is THCA legal in New Hampshire?
New Hampshire has already written THCA out of its hemp law; the ban starts Jan. 1, 2027. The federal change arrives three weeks earlier.
The short answer: Not for long. New Hampshire’s Chapter 275 of 2026 (SB 624), approved July 2, 2026, prohibits hemp-derived products above 0.3 percent THC, THCA included, starting Jan. 1, 2027. Until then the statute reads delta-9 only, but federal law counts THCA from Dec. 11, 2026. Status as of Oct. 3, 2026.
New Hampshire, by the dates
| Date | What applies |
|---|---|
| Today through Dec. 10, 2026 | RSA 439-A:2 hemp definition reads delta-9 THC at 0.3%; status contested |
| Dec. 11, 2026 | Federal total-THC definition, THCA included, applies nationwide |
| Jan. 1, 2027 | Chapter 275: state definition switches to total THC; products over 0.3% THC, THCA named, prohibited; sales of any THC hemp product to under-21s banned |
| Adult-use market | None |
What Chapter 275 does
The Senate passed SB 624 in March. The House passed it 189-165 on May 14, the Senate concurred May 21, and Gov. Kelly Ayotte signed it July 2 (bill status). The final text does four things a flower buyer should know:
- Rewrites “hemp.” RSA 439-A:2, V will cover the plant and its derivatives “with a total tetrahydrocannabinols concentration (including tetrahydrocannabinolic acid) of not more than 0.3 percent on a dry weight basis.”
- Prohibits the products. A new RSA 439-A:4 says nothing in the chapter authorizes sale of hemp-derived products “which contain natural or synthetic tetrahydrocannabinol (THC) greater than 0.3 percent on a dry weight basis… including delta-8 THC, delta-9 THC, tetrahydrocannabinolic acid (THCA), or any other THC isomer variant. Such products are prohibited.”
- Sets an age line. No licensee or “any other person” may sell or give a hemp product containing THC “in any amount” to someone under 21.
- Binds liquor licensees. Stores holding liquor licenses must comply with the prohibition, which reaches the convenience stores that sell much of the state’s hemp.
The same law creates new felonies for adulterating controlled substances, aimed at fentanyl-laced supply, not at hemp.
Why “contested” before January
A separate bill, SB 461, would have made the total-THC switch sooner. It passed the Senate in February but died (Citizens Count). So for the last quarter of 2026, the words of RSA 439-A still say delta-9. We call the status contested rather than open because the Legislature has already declared THCA products prohibited with a start date, and because a delta-9-only reading will not survive federal law for long.
Dec. 11 comes first
Federal law closes the door three weeks before the state does. THCA counts toward the federal hemp limit from Dec. 11, 2026 (federal change), which makes high-THCA flower marijuana in Nashua as anywhere else; Chapter 275’s Jan. 1 ban then adds state penalties.
Is there a licensed alternative?
Only for patients. New Hampshire is the one New England state without adult-use marijuana. Its therapeutic cannabis program lets registered patients buy from alternative treatment centers. Adults without a card have no licensed retail lane in the state.
For buyers in the meantime
- A certificate of analysis that shows low delta-9 tells you about today’s state words, not about Dec. 11 or Jan. 1. Read the total THC line.
- Purchases made now are not grandfathered by anything in Chapter 275.
Sources
- Chapter 275, Laws of 2026 (SB 624), final text; docket
- SB 461 (2026), Citizens Count
Last reviewed Oct. 3, 2026, by the state desk. Not legal advice.
New Hampshire THCA questions
Is THCA flower legal in New Hampshire?
As of Oct. 3, 2026, the state hemp definition in RSA 439-A:2 still reads delta-9 THC, but its status is contested. Chapter 275 of 2026 (SB 624), approved July 2, 2026, adds THCA to the definition and prohibits hemp-derived products over 0.3 percent THC, THCA included, from Jan. 1, 2027.
When does the New Hampshire hemp ban take effect?
Jan. 1, 2027, for most of Chapter 275. Federal law moves first: from Dec. 11, 2026, flower over 0.3 percent total THC is not hemp anywhere in the U.S.
Does New Hampshire have recreational dispensaries?
No. New Hampshire has no adult-use market. Its therapeutic cannabis program serves registered patients through alternative treatment centers.
Disclosure: THCA Group sells flower. State Pages are reported and edited apart from the market; this page is not an offer to sell or ship into New Hampshire, and no Order Request is confirmed before an Operator has spoken with the buyer.
Not legal advice: read the statute, and ask a lawyer licensed in New Hampshire. Every state · Shop