Return policies are one of those things you don't think about until you need them, and then suddenly they matter a lot. I've had to test a few of these over the years -- a TV with a dead pixel, a laptop that arrived with keyboard issues, a mattress that wasn't what I expected. Here's what you're actually working with at the major retailers.

Amazon: 30 Days for Most Items

Amazon's standard return window is 30 days from delivery for most items. The process is about as painless as returns get -- you initiate through your account, print a label or use a QR code at a UPS or Kohl's drop-off location, and the refund usually hits within a few days of the carrier scan.

Third-party seller items can be trickier. Amazon Marketplace sellers set their own return policies within Amazon's guidelines, but if a seller gives you trouble, Amazon A-to-Z Guarantee usually has your back. Electronics have the standard 30-day window, but note that some items (laptops, TVs) fall under "Amazon Renewed" rules if you bought refurbished.

Holiday returns are extended -- items bought in November and December can typically be returned through January 31. Useful for gifts.

Walmart: 90 Days

Walmart's 90-day standard return window is one of the most generous in retail. Most items, no questions asked, full refund. Exceptions include electronics (30 days), which is a common gotcha -- if you're buying a TV or laptop at Walmart, you have 30 days, not 90. Same for prepaid phones.

Receipt-less returns at Walmart work reasonably well. They can look up your purchase if you paid by card, or they'll issue a store credit for items under a certain value. The policy has tightened over the years due to return fraud, but for straightforward returns, it's still very consumer-friendly.

Target: 90 Days, 120 with RedCard

Target matches Walmart's 90-day standard window and extends it to 120 days if you paid with a RedCard (the Target credit or debit card). Same electronics exception applies -- 30 days for opened electronics.

Target Circle cardholders get a year on Target-owned brands, which matters if you're buying their Threshold furniture or All in Motion athletic wear. The receipt-less process at Target has gotten a bit stricter recently because return fraud has cost them real money, but honest returns are still easy through the app (which tracks your purchases automatically).

Costco: Unlimited on Most Items, 90 Days on Electronics

Costco's return policy is legendary and genuinely as good as advertised. Most items? Unlimited return window. Furniture, appliances, clothing, food -- bring it back whenever, for any reason. I've seen people return things years later at Costco.

Electronics are the one meaningful exception: 90 days. That covers TVs, computers, cameras, phones, and tablets. 90 days is still better than most retailers' 30-day electronics window, and Costco's customer service makes the process easy. Their Concierge Technical Support also covers electronics for two years, which is a nice bonus.

One note: Costco has started flagging accounts that return a very high volume of items. It's a rarely-used measure and only applies to obvious abuse, but it exists.

Best Buy: 15 Days Standard, 60 for Totaltech Members

Best Buy's standard return window is only 15 days, which is short. If you're buying something significant from Best Buy, you need to test it quickly. Elite members (formerly based on spending tiers) get 30 days. Totaltech members, who pay $200/year for the membership, get 60 days.

The shorter window reflects Best Buy's ongoing battle with "wardrobing" -- people buying expensive items, using them for an event or trip, and returning them. For honest shoppers, 15 days is tight on big electronics. If you're buying a TV or laptop from Best Buy, unbox and test it on day one, not day 12.

REI: One Year

REI's return policy is the most generous for outdoor gear anywhere: one year on most items. Used it, dirty, worn in -- doesn't matter. If you're not satisfied, return it. REI co-op members (the $30 lifetime membership) get the full year and the satisfaction guarantee. Non-members get a more standard window.

REI has tightened enforcement here as well. They track return history and will occasionally deny returns from members who seem to treat the policy as a free rental service. But for normal use, one year is extraordinary.

Holiday Policies and Receipt-Less Returns

Most major retailers extend their return windows for holiday purchases. Amazon does it, Target does it, Walmart does it. Typically items bought in October-December can be returned through late January. If you're buying holiday gifts, check whether the retailer has extended their window, because the standard policy might not cover a gift that the recipient waits to open.

Receipt-less returns have gotten stricter across the board. Retailers have cracked down hard on return fraud, which unfortunately creates friction for honest shoppers. Using a credit or debit card, buying through an account (Amazon, Target app, Costco membership), or using digital receipts makes receipt-less returns much smoother since purchases can be looked up. Cash transactions with no account are where you're most likely to get store credit instead of a cash refund.