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 runs community-focused programs such as donations, sponsorships, volunteer initiatives, youth bursaries, and member promotions. Mainstreet emphasizes member satisfaction and local reinvestment while offering competitive product promotions and digital and in-branch support.
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Last updated on Apr 2nd, 2026
Recent Activity
Family Movie Night featuring Zootopia 2
Mainstreet Credit Union and Captain Kidd Days are sponsoring Family Movie Night at Corunna Athletic Park with an outdoor screening of Zootopia 2, starting at dusk. Arrive early for a Zoo2You live animal meet and learn session for kids and families.
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Why Mainstreet is different from big banks
Mainstreet Credit Union highlights how its local, member focused approach differs from big banks and invites you to explore services or book a meeting on their website. The post frames banking as personal and connected to your goals, using community minded hashtags to underscore that message.
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The Big Squeeze 2026
Mainstreet Credit Union is hosting The Big Squeeze 2026 on August 5 to raise funds for Big Brothers Big Sisters of Sarnia-Lambton. Expect lemonade, community friendly activities, and a chance to support local youth through this neighborhood fundraiser.
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Home and auto insurance bundle
Mainstreet Credit Union points members to a CUMIS bundle that could save eligible good drivers and responsible homeowners up to 55 percent when they combine home and auto policies. Visit the insurer's quote page at insurelinkdirect.com/en/HA/Pages/HomeAutoQuote.aspx to get a personalized quote and compare coverage options.
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Mainstreet Student Scholarship
Mainstreet Credit Union is offering the Mainstreet Student Scholarship to three local students, each winning $1,000 toward tuition, a $100 campus bookstore gift card, and a free financial planning session. Applications are accepted online through August 14, 2026 at http://www.mainstreetcu.ca/scholarship-application.
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Baseball game ticket giveaway
Win a set of four tickets to a London Majors home game, courtesy of Mainstreet Credit Union. Enter by liking the post, commenting who you would bring, and sharing to your Story for an extra entry; contest closes July 10, 2026 at 11:59 p.m., and five winners will be contacted by direct message.
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Mainstreet Credit Union July community events
Mainstreet Credit Union will be out across Southwestern Ontario this July attending community festivals and fundraisers including Chatham Ribfest, activities at the YMCA Jerry McCaw Family Centre Sarnia, Captain Kidd Days, and the Dungannon Pro Rodeo. The post invites residents to stop by, say hello, and share which event they are most looking forward to.
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Five-year employee milestone celebration
Mainstreet Credit Union congratulates Scott on his five year milestone, recognizing his work as a commercial analyst providing underwriting support to Commercial Account Managers. The post highlights Mainstreet's collaborative culture and thanks Scott for his commitment to helping members grow their businesses.
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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.
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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.
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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.
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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.
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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.
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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/.
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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/.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
