Choose the Right Monroe Township Tax Office
New Jersey has two Monroe Townships that commonly appear in tax searches. Monroe Township in Middlesex County uses 1 Municipal Plaza and ZIP 08831, while Monroe Township in Gloucester County uses a Williamstown address at 125 Virginia Avenue.
Pick the county first, then use the correct payment portal, office, due-date notice and late-tax rules. This prevents the most expensive mistake on this search: paying or mailing money to the wrong Monroe Township.
ZIP 08831 · 1 Municipal Plaza.
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Williamstown 08094 · 125 Virginia Ave.
Feb 1 · May 1 · Aug 1 · Nov 1.
Which Monroe Township tax collector do you need?
| Check | Middlesex County Monroe | Gloucester County Monroe |
|---|---|---|
| Common location | Monroe Township, NJ 08831 | Williamstown, NJ 08094 |
| Municipal address | 1 Municipal Plaza, Monroe Township, NJ 08831 | 125 Virginia Avenue, Williamstown, NJ 08094 |
| Tax contact | 732-521-4405 | 856-728-9800 |
| Official municipal domain | MonroeTwp.com | MonroeTownshipNJ.org |
| Online tax route | Township-linked EdmundsGovPay / WIPP | Tax Collector’s Office / Monroe Taxes Online |
Monroe Township 08831 Tax Collector: Middlesex County
Alexandra Uhrig, CTC
1 Municipal Plaza
Monroe Township, NJ 08831
What the Middlesex Tax Collector handles
Why a Monroe 08831 property-tax bill contains more than Township tax
The Middlesex Monroe Tax Collector explains that the municipal portion is only one part of the total property-tax obligation. The annual bill also collects levies for other public entities.
| Bill component | What it represents | Who to call when the problem is… |
|---|---|---|
| Township municipal / Open Space | Municipal and Township Open Space levy | Collector for payment; municipal/finance sources for budget questions |
| Middlesex County / Open Space | County and County Open Space levy | Collector can explain the bill total; County sets its own levy |
| Monroe Township Board of Education | School tax levy | Collector receives the payment, but the school budget is a separate entity |
| County Library | County library levy shown within the property-tax obligation | Collector for bill/payment questions |
| Fire District 1, 2 or 3 | Applicable Monroe Township fire-district levy | Use the bill to identify the district before questioning the levy |
Final vs. preliminary quarters on the annual bill
The Township says the annual bill normally contains the final third and fourth quarters for the current year plus the preliminary first and second quarters for the following year. When comparing a paper bill with WIPP, confirm the year and quarter instead of assuming every coupon belongs to the same calendar year.
Pay or view a Monroe Township Middlesex tax bill online
The Township links taxpayers to EdmundsGovPay/WIPP to view the property-tax account, check balance/payment status, print a bill and make an online payment.
| Method | Published fee | Best use | Risk to avoid |
|---|---|---|---|
| Credit card | 2.95% | Card convenience | Percentage fee grows with a large tax payment. |
| E-check | $1.95 | Lower-cost one-time online payment | Wrong bank details can produce a returned payment. |
| Township ACH | Township describes program as free | Recurring quarterly debit | Requires advance enrollment and cancellation when appropriate. |
Middlesex Monroe ACH direct debit: timing and form checklist
The live Tax Collector page says the ACH enrollment form and a voided check should reach the office no later than 10 days before the quarterly due date. The separate ACH PDF prints earlier return-by dates, so submitting early is safer.
| Tax quarter | Quarter due | ACH form return-by date printed on PDF | Debit timing |
|---|---|---|---|
| Q1 | February 1 | January 1 | Township says debit occurs on the 4th of the quarter. |
| Q2 | May 1 | April 1 | May 4 under normal schedule. |
| Q3 | August 1 | July 1 | August 4 under normal schedule. |
| Q4 | November 1 | October 1 | November 4 under normal schedule. |
Mail, bank bill pay and drop box for Monroe 08831
Send check or money order to Monroe Township Tax Collector, 1 Municipal Plaza, Monroe Township, NJ 08831.
Receipt rule: the payment must be received by the grace deadline. The Township does not accept postmarks as proof of timeliness.
The Township warns that your bank’s “online bill pay” is not electronic to the municipality. Allow about 10 days for delivery.
Use the exact property/account information requested by the bank and Township.
A drop box is outside the front entrance of the municipal building and can be used at any time.
Use checks or money orders only. Do not put cash in the box.
Monroe Township Williamstown Tax Collector: Gloucester County
Gloucester County’s current Tax Collector directory lists Monroe Township at this number.
125 Virginia Avenue
Williamstown, NJ 08094
Pay Monroe Township Gloucester taxes online or in person
The live Monroe Township Gloucester page provides “Monroe Taxes Online” and also lists in-person Tax Office payment and personal-bank bill pay. Use the official page as the current gateway because processor links and convenience fees can change.
Drop box, mail and receipt micro-help
The Township’s published Clerk’s Book describes a 24-hour outside drop box in front of Town Hall on Virginia Avenue and says postmarks are not accepted. It also advises enclosing a self-addressed stamped envelope when a mailed/drop-box receipt is desired. Because the Clerk’s Book is not the live 2026 payment page, confirm current availability before relying on those details for a deadline payment.
Monroe Township property-tax due dates, grace periods and extensions
Both Monroe Townships use the familiar New Jersey quarterly schedule, but a municipality can publish a quarter-specific extension. That is why the bill and current Township notice must control.
The Township allows a 10-day grace period to the 10th. If the 10th falls on a weekend/holiday when the office is closed, the grace period moves to the next business day.
Resolution R:04-2026 says no interest is charged when an installment is paid on or before the tenth calendar day following its due date. A current special notice can extend a particular quarter.
No tax bill, advice-only bill or mortgage escrow confusion
What to do when a Monroe Township tax payment is not showing
| Payment route | Keep / locate | What to ask the Tax Collector |
|---|---|---|
| Online | Confirmation number, amount, date, property/account, bank/card record | Was the payment accepted, rejected or posted to another period/account? |
| Check number, amount, mailing/tracking information and payment stub copy | Was the envelope received before the deadline? | |
| Bank bill pay | Bank send date, actual delivery date, check/reference number | Did the municipality receive the bank-generated payment? |
| ACH | Enrollment date, bank account confirmation and debit record | Was the property enrolled for this quarter and did the debit reject? |
| Escrow | Lender payment date, amount and check/electronic reference | Did the lender payment post to the correct parcel? |
Property tax or Monroe Township utility bill?
Middlesex Monroe has a separate Municipal Utility Department for water/sewer. Its office, phone and payment account are not the same as the property-tax office even though both services use an Edmunds/WIPP-style online route and currently list similar processor fees.
| Bill | Office | Address / phone | Before paying |
|---|---|---|---|
| Property tax | Tax Collector | 1 Municipal Plaza · 732-521-4405 | Match the property, tax year and quarter |
| Water / sewer utility | Municipal Utility Department | 143 Union Valley Road · 732-521-1700 or 609-655-1050 | Use the utility account/payment route rather than the property-tax account |
Late Monroe Township taxes: interest, returned checks and tax-sale risk
Do not use a generic 50-state penalty calculator for a Monroe payoff. Both municipalities adopt annual interest rules, and tax-sale-stage accounts can include additional statutory costs.
| Rule | Middlesex Monroe | Gloucester Monroe |
|---|---|---|
| First $1,500 of delinquency | 8% per annum | 8% per annum |
| Amount over $1,500 | 18% per annum | 18% per annum |
| Year-end penalty | The live Tax Collector page states delinquent current-calendar-year balances remaining on December 31 are subject to a 6% year-end penalty. Ask the office how it applies to your account. | R:04-2026 adds 6% of the portion of qualifying year-end delinquency that exceeds $10,000. |
| Returned check | Township page lists $20 returned-payment fee. | 2026 resolution sets $20 plus the bank/financial-institution return charge to the Township. |
Gloucester tax-sale-certificate redemption penalties
Gloucester Monroe Resolution R:04-2026 incorporates the New Jersey statutory redemption-penalty framework when the municipality holds a tax sale certificate. These percentages are not a generic late-payment fee; they matter when an account has reached tax-sale-certificate redemption status.
| Amount due on certificate | Resolution-listed redemption penalty | User action |
|---|---|---|
| Over $200 up to $5,000 | 2% | Get a dated redemption payoff from the Tax Collector |
| Above $5,000 up to $10,000 | 4% | Do not calculate from the old quarterly coupon |
| Above $10,000 | 6% | Confirm all interest, certificate and municipal-lien charges before paying |
2026 tax-sale status signals
An August 3, 2026 Township resolution authorizes an electronic tax sale for prior-year 2025 delinquencies. If a 2025 balance remains, call the Tax Collector for the current status and exact payoff rather than relying on an old 2025 sale notice.
Resolution R:06-2026 authorizes municipal liens from Township departments to be added to the next annual municipal tax sale, with interest tied to the annual delinquent-tax rates.
Tax Collector or Tax Assessor: who can fix the problem?
| Question | Office | Why |
|---|---|---|
| How much do I owe? | Tax Collector | Balances, billing, interest and payoff. |
| Did my payment post? | Tax Collector | Payment research and receipts. |
| How do I use ACH / online payment? | Tax Collector | Payment method and account instructions. |
| Is the assessed value correct? | Tax Assessor | Valuation is not a collection issue. |
| Is the owner/mailing record wrong? | Assessor / applicable property-record office | Ownership/assessment records are maintained separately from payment posting. |
| Do I qualify for a deduction/exemption? | Tax Assessor | Eligibility and application approval are assessment functions. |
Property-tax deductions and assessment appeals are separate from payment
Paying the bill and challenging the assessed value are different processes. Do not withhold a quarterly payment simply because you intend to apply for a deduction or file an assessment appeal.
Middlesex Monroe local deductions
The Township lists eligibility items including New Jersey residency, ownership timing, income documentation, age/disability proof and voter-registration documentation. The current local page states the $10,000 income test excludes Social Security.
The Township lists discharge/service documentation such as DD-214, voter-registration documentation and additional records for a surviving spouse. A 100% disabled-veteran exemption is a separate Assessor route.
If the assessed value is the problem
| Property | Start with | Current county appeal detail |
|---|---|---|
| Middlesex Monroe / 08831 | Monroe Tax Assessor, then Middlesex County Board of Taxation | County publishes 2026 A-1 guidelines, Chapter 123 ratios and hearing schedule. Standard appeals are generally due April 1; revaluation/reassessment districts may use May 1. Verify the current-year rule before filing. |
| Gloucester Monroe / Williamstown | Gloucester County Board of Taxation / County assessment route | Gloucester County currently says regular appeals are filed from November 15 through January 15, with a 4:00 p.m. January 15 cutoff. The County went cashless July 1, 2026; paper appeal payments are by check. |
Office visit and payment safety checklist
Official Monroe tax resources to use after choosing the county
Monroe Township NJ Tax Collector FAQs
Which Monroe Township NJ Tax Collector do I need?
Use Middlesex County Monroe for a property in Monroe Township / 08831 and the Tax Collector at 1 Municipal Plaza, 732-521-4405. Use Gloucester County Monroe for a Williamstown / 08094 property and the Township at 125 Virginia Avenue, 856-728-9800. Confirm the county before opening a payment portal.
What is the current August 2026 Middlesex Monroe tax deadline?
Resolution R-8-2026-145 extends the 2026 third-quarter grace period one time through August 21, 2026. If payment is received after the extended grace period, interest is calculated from the statutory August 1 due date.
How do I pay Monroe Township Middlesex County taxes online?
Use the EdmundsGovPay/Monroe WIPP portal linked by MonroeTwp.com. Confirm the property, tax year and quarter first, then review the fee. The current Township page lists a 2.95% Mastercard/Visa fee and a $1.95 e-check fee.
How do I pay Monroe Township Gloucester County / Williamstown taxes?
Start from the official MonroeTownshipNJ.org Tax Collector’s Office / Monroe Taxes Online page. Confirm the Williamstown property and current quarter before using its online, in-person, bank-bill-pay, phone or other currently offered payment route.
What are the Monroe Township NJ Tax Collector addresses and phone numbers?
Middlesex Monroe uses Monroe Township Tax Collector, 1 Municipal Plaza, Monroe Township, NJ 08831, phone 732-521-4405. Gloucester Monroe uses 125 Virginia Avenue, Williamstown, NJ 08094, and Gloucester County lists 856-728-9800 for the Tax Collector.
When are Monroe Township NJ property taxes normally due?
The standard quarterly dates are February 1, May 1, August 1 and November 1, with a normal 10-day grace framework. A municipality can extend a specific quarter, so use the current bill and Township resolution or notice rather than assuming the standard 10th always applies.
What if I did not receive my Middlesex Monroe tax bill or it says “Advice Only”?
Failure to receive the bill does not remove the payment obligation. If a Middlesex bill says “Not a Bill – For Advice Only” and you now pay your own taxes, the Township says you may use it to pay and should notify the Tax Office to remove the bank code.
How does the Middlesex Monroe ACH program work?
The current Township page says to submit the enrollment form and a voided check no later than 10 days before the quarterly due date. Payments are debited on the 4th of the quarter and continue until the Township receives a written cancellation request. The older ACH PDF prints earlier return-by dates, so submit early.
What happens if Monroe Township property taxes are late?
The current Middlesex page and Gloucester’s 2026 resolution use 8% annual interest on the first $1,500 of delinquency and 18% above $1,500. Additional year-end or tax-sale-certificate charges can apply depending on the municipality and account stage, so request an exact dated payoff.
Should I contact the Tax Collector or Tax Assessor?
Use the Tax Collector for bills, balances, payments, interest, ACH, receipts and tax-sale payoff. Use the Assessor or County Tax Board for assessed value, ownership/assessment records, deductions, exemptions and assessment appeals. Filing an appeal does not replace the need to keep required tax payments current.