973-543-4555 ext. 225

Tax Collector: Rebecca Roth, CMFO, CTC
Tax Clerk/Finance Assistant: Lydia Blide

Office Hours 8:30am-4:30pm Monday-Friday


*DROP BOX LOCATED AT TOWN HALL 2 West Main St. Brookside, NJ 07926

Click here to make your payment on our website.

 The billing and collection of real estate property taxes is governed by state law and applies to every municipality in the State of New Jersey.  Your tax bill includes revenues collected by the Township on behalf of the municipality, county and school district.  Your tax bill is based on the assessed value of your property, and you pay taxes for every $100.00 of assessed value. 

                                                  DIRECT WITHDRAWAL
The Township of Mendham offers direct withdrawal for both tax and sewer payments.  There is no fee for this service.  For the forms to authorize direct withdrawal Click Here.  Payments for quarterly property taxes and/or sewer will be debited from the account on or around the payment due dates of February 1st, May 1st, August 1st and November 1st.  Your initial application for direct withdrawal must be received in the Tax Office no later than 30 days prior to the due date.  Please note, this authorization is to remain in full force and effect until Mendham Township has received written notification from the applicant of its termination a minimum of thirty (30) days prior to the next withdrawal. For a termination request withdrawal form Click Here. 


                                      County Tax...................................$0.259                                    
                    County Open Space Tax...............$0.008                   
   Local Tax......................................$0.434
Municipal Open Space Tax..........$0.013
   District School Tax.......................$0.879   
Regional School Tax.....................$0.565



Taxes are due quarterly on or before the first day of February, May, August and November.  There is a ten day grace period. The tax bills are mailed annually, usually in July, and include four quarterly tax installments.  The February and May installments reflect one half of the prior year tax billing and the August and November installments are finalized to conform with the tax rate each year.   If your mortgage company escrows your taxes, the original bill will be sent to them and an “advice” copy will be sent to you.  Please advise the tax office if your mailing address changes or your mortgage company is no longer responsible for paying your taxes so that we may update your records.  


Any taxes remaining unpaid after the allowed grace period will be charged interest.  State law allows for interest to be charged at a rate of 8% on the first $1,500.00 of delinquency, and 18% on any amount of delinquency over $1,500.00, until such time taxes are paid current. Payment is applied first to all delinquent interest and then to the oldest principal balance.
A penalty of 6% will be charged on any delinquency in excess of $10,000 if not paid by the end of the fiscal year.  Any municipal lien remaining unpaid on the eleventh month of the current fiscal year is subject to tax sale at any time thereafter (Ch. 99, P.L. 1997).


Sewer bills are mailed once a year in January, and are due 2/1, 5/1, 8/1, & 11/1. There is a ten day grace period for sewer.  Interest is charged at the same rate as taxes.


*The State of New Jersey does not allow the use of postmarks for payment acceptance dates.


Mendham Township Tax Department
2 West Main Street
PO Box 520
Brookside, NJ  07926

  • In Person by cash or check at the Municipal Building, Monday through Friday from 8:30am to 4:30pm.
  • Drop Box by check located near the front door of the Municipal Building.
  • By Mail by check and if you wish to receive a receipt, please include a self-addressed stamped envelope along with your entire tax bill and we will receipt the reverse side of your bill. 
  • Township Website with your checking or savings account:
  • Online with your own bank, please ensure adequate time for delivery and put your name and address or block and lot on your payment.
  • ACH Debit Program automatic payments from your checking or savings account, this can be set up with the tax office.


There is a 6% year-end penalty applied to year-end delinquencies in excess of $10,000. This amount includes taxes, interest and all other municipal charges to the end of the fiscal year.

                                         NOTICE TO SELLERS AND NEW OWNERS

Tax & Sewer bills should be transferred to new homeowners at the closing. If you are a new owner and have not received your bill, please contact the Tax Collector’s Office.  Failure to receive a tax or sewer bill does not relieve the owner from paying them, or the delinquent interest on late payments... Per NJSA 54:4-64.


Click Here for Division of Taxation’s Property Tax Relief Programs