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, investment products and GICs. The credit union provides relationship-based financial advice through digital and in-branch channels and partners with insurers to offer member benefits. Mainstreet emphasizes community engagement, member satisfaction, and local reinvestment through scholarships, donations, sponsorships and event participation.
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Last updated on Apr 2nd, 2026
Recent Activity
1-Year Cashable GIC and 30-Month GIC offers
Mainstreet Credit Union is running a limited time GIC promotion offering a 1-Year Cashable GIC at 3.00% and a 30-Month GIC at 3.65%, with the offers available through August 31, 2026. Visit mainstreetcu.ca/gic to book an appointment with a Mainstreet Advisor and compare which option best suits your savings goals.
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Graduation financial planning support
Mainstreet Credit Union is offering graduation financial planning support to help new graduates build budgets, savings strategies, and next step plans. Visit their blog at mainstreetcu.ca/blog to learn more and to book a meeting with a planner tailored to students and recent graduates.
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Playful social post
Mainstreet Credit Union published a playful social post on 2026-08-03 that reads "What can we say? Guilty as charged!🤭". The short, cheeky caption showcases a friendly brand voice and is primed for engagement on social channels.
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Holiday Closure Notice
Mainstreet Credit Union will close all branches and staffed services for the Civic Holiday on Monday, August 3, 2026, and will reopen on Tuesday. The brief notice encourages members to plan transactions around the closure and points to the credit union’s social tags for updates.
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Mainstreet community appearances in August
Mainstreet Credit Union will be visiting several community events in August 2026, including Big Brothers Big Sisters of Sarnia Lambton, Parkhill Fair, Bayfield Fair and CK Pride. Drop by their table to chat with staff, ask questions, or pick up swag during these local appearances.
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The Big Squeeze fundraiser
Mainstreet Credit Union hosts The Big Squeeze fundraiser on August 5, 2026, inviting the community to grab a friend and stop by for lemonade to support local kids. The one day event emphasizes togetherness and community support, with hashtags to help spread the word.
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Nearly 75 Years of Member Financial Service
Mainstreet Credit Union marks nearly 75 years of helping members with personalized financial guidance, from first home purchases to retirement planning. The celebratory post highlights everyday banking support and invites members to share in the many stories built over those decades.
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Family movie night: Zootopia 2
Mainstreet and Captain Kidd Days host a family movie night at Corunna Athletic Park with Zootopia 2 on 2026-08-01 at dusk, plus a Zoo2You live animal experience for kids before the film. Bring a blanket and friends for an evening of community fun under the stars.
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1-year Cashable GIC
Mainstreet Credit Union is promoting a 1-year Cashable GIC at a 3.00% rate with the flexibility to access funds before maturity. This limited time rate offer ends August 31, 2026, and you can learn more or book a meeting at https://mainstreetcu.ca/gic.
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Home insurance savings (add auto, save up to 55%)
Mainstreet Credit Union members are offered exclusive home insurance rates through partner CUMIS, with savings of up to 55% when you add an auto policy. Visit the insurer quote page at insurelinkdirect.com/en/HA/Pages/HomeAutoQuote.aspx to get started and see member pricing.
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Summer jobs financial tips
Mainstreet Credit Union shares practical tips for students to use summer job earnings to save for tuition, cover books and supplies, and pay down existing student debt. Advisor Brittany will offer a short series of actionable suggestions to help students build a budget that carries into the school year.
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Employee 10-year Milestone Announcement
Mainstreet Credit Union celebrates Lindsey for 10 years of service, honoring her work as a Retail Lending Solutions Specialist and her career path from Financial Advisor to Technology Trainer. Lindsey says the decade has been rewarding and highlights her passion for helping members reach financial goals.
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Debt Consolidation Loan
Mainstreet Credit Union points readers to a Debt Consolidation Loan blog on mainstreetcu.ca that explains how combining eligible debts creates one payment and may lower interest costs. The post frames consolidation as a way to simplify finances and invites you to read the full guide for benefits and decision points.
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Homebuyer incentives and special mortgage offer
Mainstreet Credit Union shares five homebuyer incentives for Ontario buyers, led by a special mortgage offer that can deliver up to $4,500 cash with a Mainstreet mortgage. The post also outlines land transfer tax rebates for first time buyers, new build and renovation tax rebates, and savings options through RRSP and FHSA programs.
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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.
