How to Get Cash Back on Your City of Sarnia bill

What is City of Sarnia?

Interim bills are issued in the first week of February with instalments due in February and April, and final bills in the first week of June with instalments due in June and August. The City asks you to allow 2 to 3 business days for online banking payments to process. The math on this page uses $300/month as an example property tax; your own amount will differ, and the cash back scales with it.

How to Get Cash Back on Your City of Sarnia Property Tax

1. Create your free Neobanc account: sign up at neobanc.com, takes about 2 minutes with instant verification.
2. Add City of Sarnia as a payee: search "City of Sarnia" in Bills. Banks and Neobanc list it as Sarnia (City) Taxes / Sarnia Tax.
3. Enter your roll number: 19-digit roll number beginning with 3829; enter it with no spaces, decimals or dashes, see below for exactly where to find it.
4. Pay with your preferred credit card: one-time or recurring. Your card earns its normal rewards; Neobanc adds cash back on top.
5. Earn cash back on every payment: cash back lands in your Neobanc balance. Withdraw it or put it toward next month's property tax.

Where to Find Your City of Sarnia Roll Number

Format: 19-digit roll number beginning with 3829; enter it with no spaces, decimals or dashes. The roll number is printed on the property tax bill along with the legal description of the property.

Verified against www.sarnia.ca, October 2026.

Can I Pay City of Sarnia With a Credit Card?

Yes, and it's the whole point. Most billers don't reward you for how you pay. Through Neobanc, your card earns its normal rewards and Neobanc adds 1% cash back on top. On a $300/month City of Sarnia property tax, that's roughly $108 back per year between a 2% cash-back card and Neobanc, for the exact same property tax.

The Math on Your City of Sarnia Property Tax

On a $300/month property tax, a 2% cash-back card returns about $6.00/month, and Neobanc adds $3.00 on top, roughly $108 per year for switching how you pay, not what you pay.

How do I save the most on my City of Sarnia property tax each month?

Change how you pay before what you pay. Paying by bank transfer or Pre-Authorized Payment Plan (Monthly Plan or Due Date Plan) earns nothing; the same property tax through Neobanc with a cash-back card returns about $108 a year. Late property taxes are charged a penalty of 15% per annum, applied on the first day of default and the first day of each month thereafter until paid. A recurring Neobanc payment a few business days before the due date earns on every cycle and never runs late.