Mainstreet Credit Union
Mainstreet Credit Union is a member-owned financial cooperative in Sarnia-Lambton offering personal, business, and agricultural banking services, including mortgages, loans, investing products, and GICs. The credit union provides relationship-based financial advice and partnered insurance and wealth services, and promotes periodic promotions like mortgage incentives and GIC specials. Mainstreet emphasizes community reinvestment through donations, sponsorships, volunteer programs, and youth bursaries to support local members and initiatives.
🕰️ Organization Hours:
Last updated on Apr 2nd, 2026
Recent Activity
Mainstreet Credit Union: 3 Steps to Mortgage Pre Approval
Mainstreet Credit Union shares three easy steps to get mortgage pre approved to help you understand your budget and explore mortgage options. Read the full guide or book a meeting with a Mainstreet Advisor at the provided blog link to move confidently from house hunting to making an offer.
Share Update
Mainstreet mortgage cash offer
Mainstreet Credit Union is offering a limited time mortgage promotion that lets you earn up to $4,500 cash when you renew refinance or switch your mortgage, plus support from a dedicated advisor. Visit the Mainstreet offer page to learn more and review the terms and conditions.
Share Update
Home insurance with CUMIS benefits
Mainstreet Credit Union members can access home insurance through CUMIS that includes a first claim that will not impact your policy, a $100 deductible reduction each year, and preferred rates after three claims free years. Learn more and compare coverage at https://mainstreetcu.ca/insurance.
Share Update
Limited-time GIC specials
Mainstreet Credit Union is offering limited-time GIC specials: 3.60% on an 18-month GIC and 3.65% on a 30-month GIC, with the promotion running through June 30, 2026. Visit the Mainstreet GIC page to review terms and apply before the offer ends.
Share Update
World Elite Business Mastercard offer
Mainstreet Credit Union is offering a World Elite Business Mastercard promotion, with a $130 first-year fee rebate and bonus Flex Rewards points for cards activated between April 1, 2026 and June 30, 2026. Learn more and apply at the Mainstreet CU business cards page to take advantage of the offer before the June 30 deadline.
Share Update
Mortgage rate options overview and contact invitation
Mainstreet Credit Union breaks down fixed and variable rate mortgages and invites you to discuss which option suits your goals. Ryan outlines the trade offs between predictability and flexibility, and the team is available in branch, by phone, or via virtual appointment at https://mainstreetcu.ca/.
Share Update
CU Succeed Youth Bursary program
The CU Succeed Youth Bursary program, backed by the Ontario Credit Union Foundation, is awarding $100,000 in bursaries for Ontario post secondary students. Mainstreet members pursuing college or university should apply by June 30, 2026; details and the application are at https://cusyb.ocuf.org/.
Share Update
Cash Back World Elite® Mastercard rebate offer
Mainstreet Credit Union is offering a promotion for the Cash Back World Elite Mastercard that provides a $120 first year fee rebate and bonus Flex Rewards points for cards activated between April 1, 2026 and June 30, 2026. Visit the Mainstreet Credit Union website to learn more and apply, terms and conditions apply.
Share Update
Mortgage cash incentive offer
Mainstreet Credit Union is offering up to $4,500 cash when you buy, refinance, or switch your mortgage to Mainstreet, plus a dedicated advisor to guide you. Learn more and start the process via the offer page at https://mainstreetcu.ca/mortgage-offer; terms and conditions apply.
Share Update
5-year employee milestone
Mainstreet Credit Union celebrates Alyssa on her five year milestone, recognizing her growth from Member Service Representative to Community Engagement and CSR Coordinator. The post thanks her for dedication to serving communities and building lasting partnerships, and includes hashtags #MainstreetCU and #InvestedInYou.
Share Update
Five-year employee milestone recognition
Mainstreet Credit Union celebrates Nikhil on his five year milestone as Commercial and Agricultural Account Manager in Sarnia, noting his role in supporting local businesses and farmers. The post credits the organization’s community focused culture and leadership mentorship for his growth, and shares thanks from Mainstreet and its members.
Share Update
Fill the Bus CAMPaign
Mainstreet Credit Union and the YMCA of Southwestern Ontario are running the Fill the Bus CAMPaign, reporting a $40,000 contribution and hosting community bus push events in Chatham on June 6, London on June 18, and Sarnia on July 10. Registration is open for teams to raise funds or donate to help send kids to YMCA summer camp; see Push the Bus | YMCA of Southwestern Ontario for details.
Share Update
Cottage and cabin succession planning webinar
Mainstreet Credit Union hosts a free 60 minute webinar on cottage and cabin succession planning with Aviso Wealth tax expert Doug Carroll on June 11 at 12 PM, delivered over Zoom. Register now to attend live or get a recording emailed to you after the session.
Share Update
Youth sports team ticket giveaway (25 tickets)
Mainstreet Credit Union and the London Majors are giving one youth sports team 25 tickets to a London Majors home game. Enter at https://mainstreetcu.ca/giveaway by May 22, 2026 at 11:59 PM, and the winning team entrant and coach will be notified by email.
Share Update
Branch closure announcement
Mainstreet Credit Union will close all branches and staffed services for Victoria Day on Monday, May 18, 2026, and will resume branch service on Tuesday, May 19, 2026. The brief notice is intended to help members plan branch visits and rely on online or mobile banking on the holiday.
Share Update
Ice Cream Galore
Mainstreet Credit Union spotlights Ice Cream Galore in Point Edward, a nearly 50 year local favorite known for fresh waffle cones and generous scoops. The piece frames the shop as a seasonal tradition to support during the May long weekend and links to a longer story on the credit union website.
Share Update
Student credit cards and student banking offerings
Mainstreet Credit Union is promoting student credit cards and student banking offerings to help you build credit and manage school expenses before the fall semester. Explore low fee or no fee card options, student banking products, and book a meeting with an advisor via their student and youth page at https://mainstreetcu.ca/student-and-youth.
Share Update
Mother's Day greeting
Mainstreet Credit Union posted a heartfelt Happy Mother's Day message on 2026-05-10, thanking mothers and mother figures and using #MainstreetCU, #Investedinyou, and #Mothersday. The brief social greeting is a friendly, community focused note from the organization that day.
Share Update
Push the Bus
Mainstreet Credit Union is promoting the Push the Bus campaign to raise mobile donations for YMCA of SWO summer programs. You can contribute instantly by texting BUS to 30333, a simple action that helps local children, youth, and families access vital services.
Share Update
Why you should get pre-approved for a mortgage
Mainstreet Credit Union recommends getting pre approved before you shop to gain clarity, confidence, and peace of mind during your home buying journey. Read the full blog at MainstreetCU.ca and connect with an advisor when you are ready to move forward.
Share Update
GIC special
Mainstreet Credit Union is running a limited time GIC special with 3.60% for 18 months and 3.65% for 30 months, available through May 31, 2026. Visit the Mainstreet offer page to review details or book a meeting to open a GIC while these rates remain available.
Share Update
Employee 10-year milestone announcement
Mainstreet Credit Union is celebrating James for reaching his 10 year milestone as Branch Manager of the Goderich branch, with a personal message about teamwork and community. The post thanks James for his commitment and invites recognition using #MainstreetCU and #InvestedInYou.
Share Update
2025 Annual Report Release
Mainstreet Credit Union has posted its 2025 Annual Report online, featuring 2025 financials, the opening of a new Petrolia branch, 16 percent growth in assets under administration, 900 volunteer hours, and more than $189,000 shared with the community. Read or download the full report at the link provided for leadership notes, team highlights, and detailed financial statements.
Share Update
New Business Account Manager announcement
Mainstreet Credit Union announced Tiffany Burnett as their new Business Account Manager for Sarnia on 2026-04-30. With eight years at Mainstreet and a relationship first approach, she will deliver personalized guidance and seamless banking experiences to local businesses.
Share Update
Socially responsible investing overview
Mainstreet Credit Union offers a concise introduction to socially responsible investing, showing how to weigh environmental, social, and governance factors alongside long term performance. The piece links to a blog post that walks through building a values aligned investment approach with clarity and practical next steps.
