Property Taxes | City of Thunder Bay

The Revenue Office is open by APPOINTMENT ONLY at 501-34 Cumberland St N. Please call 807-625-2255 to make an appointment.
Courier Address
City of Thunder Bay
Revenue Division
501-34 Cumberland St N
Thunder Bay ON P7A 4L3

Mailing Address
City of Thunder Bay
Revenue Division
PO Box 800
Thunder Bay ON P7C 5K4

Property taxes are calculated using the Current Value Assessment of a property, as determined by the Municipal Property Assessment Corporation (MPAC), and multiplying it by the combined municipal and education rates for the applicable class of property. If you have questions about your property assessment, visit Municipal Property Assessment Corporation (MPAC).

To help provide a better understanding of how property taxes are calculated, watch MPAC’s video How Your Property Tax is Calculated.

An interim and final bill is issued each year for every property. Supplemental bills are issued for new buildings, changes in your property's assessed value and other cases. Supplemental bills can be for the current year and up to the last two years.

Sign-up for Tax E-billing (Paperless billing)

Follow the sign-up steps to receive your interim and final tax bill via email:

Visit the sign-up page
Have your 17-digit property roll number found on your tax bill
Have your access code found on your tax bill. Keep this access code as it will be needed to open your emailed tax bill.

To sign up for e-billing for more than one property, you must submit a separate form for each property.

If the tax bill is undeliverable to the email address provided, we will immediately cancel the e-billing service.

The e-billing doesn’t transfer when a property is sold. The email address will be removed from the sold property and a new e-billing sign up must be completed for the new property.

Please note: Only interim and final tax bills are sent by e-billing. All other notices, such as arrears notices and adjustment letters, will continue to be mailed through Canada Post. It is your responsibility to keep your mailing address and email address up to date with the Revenue Office. Any penalties, interest, or fees from late payments will still apply and cannot be waived due to an incorrect or outdated email or mailing address.

Call us at (807) 625-2255 during regular business hours if you require assistance.

Balances and updates

Call us for an account balance (807) 625-2255; Monday - Friday, 8:30 am - 4:30 pm

Property tax reminders

Sign-up to receive property tax reminders by phone, text or email for your tax bills.

Payment options

Payment must be received by the due date to avoid penalty. Please consider processing times (3-5 business days) when making payments through online/telephone banking or by credit card (PaySimply).

Pay online, or by telephone banking - Pay your property taxes from your bank account online or by using your touch-tone phone, often with no charge. Thunder Bay property taxes will appear as a registered payee. Your 17 digit roll number is your account number. Search "Thunder Bay" and select "property taxes".
Automatic Withdrawal Plans - Sign up for automatic withdrawal from your chequing account. To cancel pre-authorized withdrawals, please contact the City by email at taxandwater@thunderbay.ca with your name and address of the property.
Pay Online with Credit Card, Interac e-Transfer, PayPal, or through Canada Post with the third-party provider PaySimply (additional fee applies). Your 17 digit roll number is your account number.
Pay in person at the bank - Payment can be made in person at many Canadian financial institutions. Contact your branch for more information.
Leave a Cheque in the Payment Drop-off Box located at 34 Cumberland St N (near the entrance on the St. Paul St side of the building).
Mail a cheque to: City of Thunder Bay, PO BOX 800, Thunder Bay ON P7C 5K4 (cheque must be received by the due date to avoid penalty)

Tax guides for due dates, classes and more

Supplementary & Omitted Tax Bills

Supplementary and/or omitted assessments are billed separately from the regular billing cycle, and are issued throughout the year.

Assessment and Billing Process

The Municipal Property Assessment Corporation (MPAC) can provide the City with supplementary and/or omitted assessment values for the current tax year and two years prior when:

land is omitted from the assessment roll
use of the property changes
property is improved due to construction, an addition, or renovation

You will receive a Property Assessment Change Notice from MPAC, informing you of the supplementary and/or omitted assessment value.

Supplementary and/or omitted residential property tax bills are calculated by multiplying the supplementary and/or omitted assessment value by the tax rate for the applicable tax year.

MPAC has authority to assign omitted and/or supplementary assessment for the current year and two years prior.

If you own a new property, the first regular bill you receive from the City may only be for the portion relating to land value. You should expect a supplementary and/or omitted bill for the structure to follow.

Supplementary and/or omitted assessments are issued under the authority of Section 34 and 33 of the Assessment Act.

Note: if you are currently enrolled in the Monthly Pre-Authorized Tax Payment Program, supplementary and/or omitted tax bills will not be paid from your financial institution account.

Payment must be received by the due date to avoid penalty and interest charges

Estimate your Supplementary and/or Omitted Tax bill

Assessed values are determined by MPAC. The City cannot project the assessed value for your new property or renovations. In order to set aside funds in anticipation of receiving the supplementary and/or omitted tax bills, you can use the purchase price as a guide.

If you have purchased a new property, made any physical changes to a property or changed the use of your property, it is recommended that you set aside funds in anticipation of supplementary and/or omitted tax bills.

Property Tax Estimate

Use the purchase price as an estimated assessed value and multiply that amount by the applicable year’s tax rate.

Appeal your Supplementary and/or Omitted Assessment

If you disagree with the information on your Property Assessment Change Notice from the Municipal Property Assessment Corporation (MPAC) you may request a review. The deadline to submit your Request for Reconsideration (RfR) is 120 days from the issuance date printed on the Property Assessment Notice.

It is recommended to pay your supplementary and/or omitted property tax bills as issued, to avoid incurring any penalty/interest.

Apply for tax rebates, adjustments and credits

Learn more on our Discounts and Rebates page.

Other information

Address changes

To update your mailing address complete an address change form and return by mail, fax or email to taxandwater@thunderbay.ca.

Assessment appeals

The Municipal Property Assessment Corporation (MPAC) classifies all properties in Ontario under the Assessment Act and regulations established by the Provincial Government.

You can contact MPAC at (866) 296-6722 to get information on your Property Assessment Notice, verify details about your property or file a free Request for Reconsideration (RfR). The due date to file a RfR with MPAC is printed on your Property Assessment Notice.

The Assessment Review Board (ARB) handles appeals on property assessments and classification. The ARB can be contacted at (416) 212-6349 or toll free at 1(866) 448-2248.

Buying or selling your home

The Property Tax and Water Billing Questions and Answers guide will help you with frequently asked questions when you are buying or selling a home.

Tax Rates (2000 to current)

Past year tax rates are available from the year 2000.

Penalties and charges

All payments must be received by the City by the due date to avoid penalty. Penalties will not be cancelled if you did not receive your bill.

You will be charged a late payment penalty of 1.25% on your outstanding balance if your bill is not paid by the due date and on the first day of every month on any outstanding balance.

The Not Sufficient Funds (NSF) fee is $45.

Tax certificates

Complete a tax certificate form and include payment of $60.00. For more information please call (807) 625-2255.

School Support Designation

As a property owner in Ontario, you are required to support a school system, even if you do not have children or your children are not currently attending school. In the case of a residential property occupied by tenants, the tenants can direct the school support for that property.

While you’re not required to make a designation, you do have the option to choose which school board you support. If you don’t make a choice, your support will default to the English-Public school board.

Your designation also helps determine how you’re listed on the Preliminary List of Electors, placing you on the correct voters list for the municipal and school board elections.

For more information about School Support Designation and how to updated your School Support Designation, please visit the MPAC website.

Tax sale properties

The Revenue Division conducts one tax sale every year in June. The properties are advertised in the local newspaper, the Ontario Gazette and on this webpage.

For inquiries, please contact our Collection Officer at (807) 625-2255.

2026 Tax Sale Results

If you require a PDF in an accessible format, email our Municipal Accessibility Specialist.