NFL teams can trade from the start of the new league year in March until the in‑season trade deadline, which usually falls around Week 9–10 at 4 p.m. ET each year. After the deadline, no player trades are allowed until the next league year begins.

When can NFL teams trade?

  • Start of trading: Teams can begin trading when the new league year opens in mid‑March (for example, March 13 in 2024).
  • End of trading: Trading stops at the NFL trade deadline, set for a Tuesday at 4 p.m. ET in the middle of the season (recent deadlines have been late October or early November, around Week 9–10).
  • Offseason agreements: Teams can agree to trades before the league year (for example right after the Super Bowl), but those trades do not become official until the new league year date.

In-season trade deadline basics

  • The deadline is a hard cutoff: once it hits, no more trades can be processed that season.
  • In recent years, the deadline has been at 4 p.m. ET on a Tuesday, around the start of Week 9 or Week 10.
  • After the deadline, teams can only add players via waivers or free agency , not via trade.

Why is there a trade window?

  • The trade deadline exists to keep late‑season contenders from stacking rosters with last‑minute star trades, preserving competitive balance.
  • Throughout the entire trading window, every move must still comply with the NFL salary cap , which can limit what kind of contracts teams are able to take on.

Simple timeline example

  • March: New league year begins → trading opens.
  • March through mid‑season: Teams can trade players and draft picks, subject to cap rules.
  • Late October / early November (Week 9–10): Trade deadline at 4 p.m. ET → trading closes for the rest of the season.
TL;DR: NFL teams can trade from the start of the new league year in March until the mid‑season trade deadline (a Tuesday at 4 p.m. ET around Week 9–10); after that, no trades are allowed until the next league year opens.
Information gathered from public forums or data available on the internet and portrayed here.