When Do Costco Mattresses Go on Sale? Best Time to Buy (2026)

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Most sleep experts recommend buying a mattress after 7-10 years and the best time to buy a mattress is during the sale. Mattresses sales go live at any part of the year. However, the most common time for sales to go live is at the end of the year. Costco offers sales regularly throughout the year. There are a couple of months during which Costco offers special discounts on their mattresses to eliminate the existing inventory.

So, if you plan to buy a mattress from Costco this year, read below to help with your mattress purchase.

Seasonal Markdowns

To clear the existing inventory before the launch of the new stock, most sellers start selling their products at discounted prices. The discounted inventories are known as terminal inventory. Seasonal markdowns are the sales. Costco has a seasonal Markdown set to clear its existing stock.

The seasonal markdown for Costco starts every year in May and June. During these two months, most manufacturers offer discounts on their existing inventory to get rid of it. These discounts aim to clear out all the previous ear stock that is left over.

Manager Markdowns

Most sellers use manager markdowns to boost their product sales temporarily. During manager markdowns, the sellers try to clear the stock that is bought in either large quantities or to promote a particular product.

To promote manager markdowns, Costco, on every 4th Monday, dramatically drops the prices on some of their items in their brick-and-mortar stores. Therefore, anytime you see the promotional manager markdown with a .97 price on Costco. Do not wait and grab their mattress deals without, as it would be on a manager markdown.

Mattress Sales and Cycles

Costco does not offer sales like those typical grocery stores, but the booklets they send every month do include monthly discounts. You can use these coupons at their stores as they can be a great way to avail huge monthly discounts on Costco stores.

They have repetitive sales cycle experience. For instance, every month of August, they offer a sale on zip lock bags along with some selected snacks and cereals to help the back-to-the-school spending and shopping.

Sales at Clearance

The clearance sales are offered by almost all brands regardless of what type of business they are doing. For those items or products whose sales haven't reached the anticipated level, Costco offers clearance sales on them. Since the store has a lot of stock to clear, clearance has now become necessary.

Therefore, Costco will visit the manufacturer to seek permission to discount the stock piled up in their warehouse while waiting for clearance. Sometimes clearance is applicable on perishable items that may expire if the seller does not sell them soon.

New Year

Most mattress manufacturers go live with their sales close to the new year. A new year is the best time to introduce other promotional sales, especially for newcomers. Not only Costco but all brands offer huge discount sale offers on their mattresses. The main reason for these sales is to clear the old stock before introducing the new stock.

The sellers take advantage of launching their new product types in the new year with attractive perks to gain more attention. Besides the new year, Costco offers good discount packages on Black Friday. Although Costco keeps offering sales on their mattress from time to time, the new year's sale is one permanent time to make them go live, unlike other occasional ones.

Christmas

Christmas sales go live near the end of the year. The Christmas sale comes under the holiday and seasonal category of the sale in winter. This is the best time to invest in a mattress as the mattress prices are already low due to winter.

Secondly, the special discount offer for Christmas makes a mattress even cheaper. So, if you plan to buy a mattress in winter, wait until Christmas. Other occasional sales seasons would include the new year, which is close to Christmas, Thanksgiving, and winter holidays.

What Time is Best to Buy a Mattress from Costco?

Costco offers sale discounts on their mattresses at the end of the year. All mattress brands offer huge discounts at the end of the year. They offer a sale to get rid of their old stock.

Since the new year, Christmas, and winter holidays, all these top-selling moments are lined up together. So, it gives an excellent opportunity to most sellers to get rid of their old stock and later launch fresh and new stock units.

Usually, the sale of mattresses at Costco goes live in May and June. But Costco even utilizes the opportunity of Black Friday and the end of the year.

Conclusion

Sale is an excellent way to get rid of the old stock, no matter how successful your brand is. At Costco, they have a lot of mattress models that go on sale from time to time on different occasions with various terms and conditions. So, if you want to buy a mattress from Costco, maybe the Months of May and June can be a good deal to buy mattresses and save money.

However, the other Christmas, new year, and Black Friday sales can also be a good time to buy cheap mattresses from Costco.

When Does Costco Have Mattress Sales? Best Times to Buy in 2026

Costco is known for offering quality mattresses at competitive warehouse prices, but timing your purchase around sales events can save you an additional $100–$500. Here are the best times to buy a mattress at Costco based on historical pricing patterns.

January (Post-Holiday Sales): After the holiday season, Costco marks down mattresses that did not sell during the gift-buying rush. White Sale events in January traditionally feature bedding and mattress deals. Expect 15–25% off select models.

February (Presidents' Day): One of the biggest mattress sale events of the year across all retailers. Costco typically runs a 2–3 week promotion with $100–$300 off brands like Novaform, Casper, Sleep Science, and Sealy. This is historically the best winter sale period for mattresses.

May (Memorial Day): Another major mattress sale holiday. Costco both in-store and on Costco.com discounts mattresses significantly. Memorial Day 2025 saw Novaform Queen mattresses drop to $350–$450, down from $500–$600.

July–August (Summer Clearance): As new models arrive for fall, Costco clears out existing inventory. You may find the deepest discounts here, but selection is limited to whatever stock remains.

September (Labor Day): Another traditional mattress sale weekend. Costco matches the industry-wide Labor Day promotions with competitive pricing on warehouse favorites.

November (Black Friday/Holiday): Costco's Holiday Savings Event runs for several weeks in November. Online-only mattress deals often beat in-store prices. Black Friday and Cyber Monday bring the largest single-day discounts of the year.

Costco's Return Policy Advantage: Costco offers one of the most generous return policies in retail, you can return a mattress at any time for a full refund, no questions asked. There is no official trial period limit. This alone makes Costco attractive regardless of sale timing.

Compare Before You Buy: While Costco prices are competitive, the Saatva Classic ($1,779 Queen) offers a luxury-tier mattress with a 365-night trial, lifetime warranty, and free white-glove delivery. The Saatva Classic outperforms most warehouse mattresses in construction quality and longevity, worth comparing before you grab a Costco deal.

How to Choose the Right Mattress

With thousands of mattress options available, cutting through the noise requires focusing on what actually matters for your sleep quality and budget.

The Three Things That Matter Most

1. Support and alignment. Your mattress should keep your spine in a neutral position regardless of sleep position. If you wake up with aches or stiffness, your mattress is failing at its primary job.
2. Temperature regulation. Sleeping hot disrupts deep sleep cycles. Innerspring and hybrid mattresses with coil systems promote airflow far better than all-foam designs.
3. Purchase protection. A generous trial period (100+ nights), strong warranty, and hassle-free returns protect you from an expensive mistake. Never buy a mattress you cannot return.

A Strong Benchmark

The Saatva Classic ($1,779 Queen) scores well on all three factors: coil-on-coil construction for support and airflow, a 365-night home trial for risk-free evaluation, and a lifetime warranty for long-term protection. Free white-glove delivery and old mattress removal are included with every order.