“What is the statute of limitations in New Hampshire?” is a deceptively simple question. But there is no single statute of limitations in New Hampshire and a "statute of limitation" is just one type of time limit on filing lawsuits. This is a very complex area of law to research because the time limits for filing a lawsuit vary depending upon the jurisdiction, the type of claim and even who the defendant is. Also, there may be more than one statute of limitations that applies to a particular event so that even though one time period has expired, there might still be time to bring an action. Calculating when a statute of limitations starts to “run” (think of it as when the countdown starts) can be difficult. Under certain conditions, statutes of limitations can be “tolled” so that the countdown pauses. Because this is such a complex area of law, researchers should consult with a lawyer before deciding that their time has run out to file a lawsuit.
This report from the Congressional Research Service deals with the drafting of federal statutes of limitations but it explains several concepts that apply to New Hampshire law as well.
Personal Injury, Tort, and Insurance Practice by 
A Practical Guide to Construction Law and Litigation in New Hampshire by Please remember that this guide is for information purposes only and is not comprehensive.
It is intended as a starting point for research, to illustrate the various sources of the law, and to provide guidance in their use.
NH Law About ... is not a substitute for the services of an attorney.