Business Memberships allow you to purchase products for business, personal, and resale use at any Costco Wholesale location worldwide and online at Costco.com. One additional card is also provided for a member of your household at no additional charge. Like all Costco memberships, it’s valid for one year and must be renewed annually.

Costco Home Improvement Installed Products. For Graber Window Treatments: 1-855-742-9130 For Lennox HVAC: 1-877-483-6226

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Visit the membership counter at your local Costco warehouse or use the Contact Us options on this page. Provide your membership card and photo ID at the membership counter. They will send you an email containing a link valid for 48 hours.

Costco Business Members may be exempt from tax on warehouse purchases based upon their resale licenses or tax exempt status. However, qualifications may vary, depending upon your state. So, we recommend that you either visit or call …

For resale, Costco.com requires the appropriate resale certificate from the state where the shipment was delivered. For exempt organizations, such as schools and nonprofit organizations, most states require that purchases be made with a credit card in that name of the tax-exempt business or agency.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Electronics: Costco will accept returns within 90 days (from the date the member received the merchandise) for Televisions, Projectors, Major Appliances (refrigerators above 10 cu. ft., freezers, ranges, cooktops, over-the-range and under-counter microwaves, range hoods, dishwashers, water heaters, washers and dryers), Computers, Touchscreen ...