Tax Collector, 1 Junkins Avenue, Portsmouth, NH 03801 Tel: (603) 610-7244, Fax: (603) 431-6402

Tax Collector

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TAX COLLECTOR - Vehicle Registration Information


Proof of residency is required by the City of Portsmouth and the State of New Hampshire for new residents to register vehicles. We will accept one of the following documents, as long as it is dated within the past 30 days:

  • Utility Bill
  • Cable Bill
  • Pay Stub
  • Lease Agreement (notarized signatures of tenant and landlord or notarized letter required)
  • Envelope with postal forwarded address

For those residents who are NEW to the State of New Hampshire, you will be required to sign a City of Portsmouth "Residency Affidavit" which will be provided to you by the Tax Office at City Hall.

The State relies on the towns and cities to enforce residency; a resident is someone who has, through all of his actions, demonstrated a current intent to designate that place of abode as his principal place of physical presence for the indefinite future to the exclusion of all others (State of NH RSA 21:6). If the City has concerns about your residency, you may not be permitted to register.

In addition to Proof of Residency, the information below is required if you are a new resident in New Hampshire and have a vehicle currently registered out of state:"

If you do not have a lien on your vehicle:

  • Title of vehicle
  • Seller's name and address
  • Date of purchase
  • Odometer reading

If you have a lien on your vehicle and lienholder is located outside NH:

  • Registration
  • Lienholder's name and address
  • Date of lien
  • Seller's name and address
  • Date of sale
  • Odometer reading
1999 and Older Vehicles and Trailers > 3000 lbs.
  • Bill of sale (if newly purchased) or out of state registration in registrant's name and one of the following:
  • Valid title
  • Verification of VIN (form 19A)
  • Valid New Hampshire registration

Trailers < 3000 lbs.

  • Trailers < 3000 lbs. required to produce out of state registration or bill of sale (if newly purchased) or certificate of origin (if new)

For more information, please visit or contact the Tax Office at 603-610-7244.

The City of Portsmouth Tax Office accepts checks and cash only for motor vehicle registration payments. If you wish to pay by credit card, please visit the online payment, and registration estimates webpage (click here).

Page updated February 25, 2015