Source 2-4 months before peak demand, not during it. Buy winter coats in July for under $10, swimwear in January, and formal wear in February. Hit thrift stores hardest in January (post-holiday donation surge) and March-April (spring cleaning). Shift to selling mode in September-October and November-December.
Most reselling guides tell you when to sell. This one covers when to buy, because most of your margin comes from the gap between the two.
The worst time to buy something is when everyone wants it. Winter coats are cheapest at thrift stores in June and July, not October. Swimwear costs almost nothing in January. Halloween costumes sit on the racks from November through August. Source when demand is low, sell when it peaks, and you are running the same playbook as a retail store, only with thrift prices instead of wholesale.
January: The Post-Holiday Gold Rush
January is the best sourcing month of the year by a wide margin. Thrift stores are full of post-holiday donations, and foot traffic drops because shoppers spent their money in December. You get more to pick from and fewer people picking.
What to Source in January
- Denim and wardrobe basics. People upgrade at Christmas and donate last year's jeans, flannels, and everyday wear.
- Holiday decor at 50-75% off (buy now, sell next October-November)
- Swimwear and resort wear, which hit their cheapest off-season prices of the year
- Kitchen and home goods from name brands, part of the same donation wave
- Designer items that gift recipients replaced and gave away
February: Quiet Month, Smart Money
This is a good month to source formal wear. Post-prom and holiday-party formal dresses get donated starting in January and pile up through February. Nobody's shopping for them yet. You can pick up good formal pieces for a few dollars each and list them in March and April, when prom shoppers start searching.
February Sourcing Targets
- Formal dresses and suits, at their cheapest before prom demand starts in March
- Winter clearance coats, discounted to make room for spring stock
- Valentine's Day themed items for next year (if you find them dirt cheap)
- Jewelry. Post-holiday clean-outs often include whole jewelry boxes.
- Athletic wear from New Year's resolution gym-goers who already quit and donated what they bought in January
March-April: The Spring Cleaning Tsunami
Spring cleaning is the second-largest donation event of the year, and donation volume climbs noticeably through March and April. Spring donations also tend to be in better shape. People are clearing out things they no longer want but that still have plenty of wear left, not broken junk. This is when you find North Face jackets mixed in with the no-name fleeces.
What to Source in March-April
- Kids' clothing in all sizes, as parents purge outgrown wardrobes
- Winter coats and boots at steep discounts, since stores want them gone before summer
- Handbags and accessories from spring closet cleanouts
- Home decor and kitchenware, which arrive with the same donation wave
- Books and media from shelf cleanouts, which you can flip on Amazon or eBay
Community and citywide garage sales kick off in April in most parts of the country and peak in May. Follow your city's local event pages and neighborhood apps. The best estate sales of the year tend to cluster between April and June, when people downsize before summer moves. Estate sales are a good source of vintage clothing, designer goods, and one-off items that sell well online.
May-June: Garage Sale Season and Summer Sourcing
This is peak garage sale and estate sale season. May is widely seen as the best month for yard sales, and community-wide sales can pull in a lot of sellers in a single weekend. National Garage Sale Day falls on the second Saturday in August (August 8 in 2026), but most of the good sales happen well before that.
May-June Sourcing Strategy
- Winter outerwear. Off-season pricing makes this a good time to stockpile coats and heavy jackets.
- Formal dresses, since prom is over and June brings post-prom donations and yard sales
- Sports equipment that families replace before summer camps and leagues
- Vintage and collectibles, with estate sale season at its peak
- Shoes from end-of-school cleanouts
June is also when to start picking up Halloween costumes. Unusual and vintage costumes from thrift stores and estate sales can sell for $25 to $60+ on Poshmark or eBay in October, and they rarely cost more than a few dollars to source. That margin easily covers four months in a bin.
July: The Cheapest Month for Winter Stock
July is the cheapest month to source winter inventory. Thrift stores have had coats and heavy sweaters on the racks since October, and they need the floor space for fall arrivals. Coats and jackets under $10 are common, including Patagonia, Columbia, or The North Face pieces that can sell for $40-80 online in winter.
July Priority Sources
- Winter coats, parkas, and heavy outerwear at their lowest prices and widest selection
- Leather and snow boots, which sit untouched all summer
- Sweaters and knits, often priced to clear
- Scarves, gloves, and cold-weather accessories
- Ski and snowboard gear at yard sales and estate sales
August: Back-to-School Sourcing (Yes, Sourcing)
Late summer triggers the second-biggest donation surge of the year. Parents clear out closets full of outgrown kids' clothes, old backpacks, and last year's school supplies. Thrift stores get flooded with children's clothing from late July through mid-August. This is your window to source kids' inventory at volume for the fall and holiday season.
August Sourcing Plays
- Kids' clothing in volume, at low prices
- Summer clearance: swimwear, shorts, and sandals marked down to make room
- Dorm and apartment basics donated as college students move
- Continue building winter coat inventory while off-season prices hold
Summer swimwear and resort wear is getting cleared off thrift store racks in August the same way winter coats get cleared in spring. Source it now, hold it until January or February, and sell it when vacation planners start shopping.
September-October: Transition to Selling Mode
This is where the calendar flips. September and October are mostly for selling. Demand for fall and winter clothing climbs, and the inventory you stocked over the summer starts turning into cash.
Selective September-October Sourcing
- Swimwear, now off-season again as stores clear summer stock
- Spring and summer dresses: cheap now, valuable again in March
- Post-season baseball, softball, and soccer equipment after leagues wrap up
- Halloween costumes, if you haven't sourced them yet. Thrift stores stock up in September, so move before October demand empties the racks.
November-December: Sell, Don't Source
November and December are the most profitable selling window of the year. Holiday shoppers spend on resale marketplaces too. Your time is better spent listing, shipping, and handling sales than picking through thrift store racks.
One sourcing play is still worth making: post-holiday clearance at retail stores (not thrift). Gift sets, seasonal items, and holiday merchandise drop to 50-75% off starting December 26. If you have spare cash, buying retail clearance to resell next season can work. Sell through your existing inventory first.
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If You Must Source in Nov-Dec
- Post-holiday retail clearance (December 26+): holiday decor, gift sets, seasonal clothing
- Denim and basics, whenever you find good brands cheap
- Electronics and media, since holiday returns and upgrades open a brief window in late December
- Beyond that, put your time into selling.
Categories Worth Sourcing Year-Round
Some categories don't follow seasonal patterns. They sell consistently, and you should source them whenever you spot them.
- Designer and luxury brands. A $3 find worth $80+ sells in any month.
- Vintage band tees and graphic tees, with steady demand and prices
- Denim jackets and classic denim
- Athletic wear from Nike, Lululemon, and Adidas, which sells and gets donated all year
- Good leather goods: belts, bags, wallets, and jackets
Sourcing Tactics That Multiply Your Calendar
Build Thrift Store Relationships
Ask store staff when they restock shelves and when new donations hit the floor. Most thrift stores have specific restock days. Showing up on those days gets you first pick. Polite regulars sometimes get tipped off about incoming donations or upcoming clearance events before they're publicly announced.
Follow the Color Tag Sales
Goodwill and many regional chains use rotating color-tag discount systems. Items with a specific tag color go 50% off one week, then clearance the next. Learn your local store's rotation schedule. A coat marked at $8 drops to $4 on discount day and $1-2 at clearance, if nobody grabs it first.
Layer Your Sourcing Channels
Thrift stores are the base, but estate sales, garage sales, Facebook Marketplace, and online liquidation lots each have their own seasons. Garage sales peak May through August. Estate sales run heaviest from April through June and again in September. Using several channels means you are never waiting on one source.
Connecting Sourcing to Selling
This calendar pairs with the seasonal selling guide. Source 2-4 months ahead of peak selling season. Winter coats sourced in June sell in October. Swimwear sourced in January sells in April. Kids' clothes sourced in March sell in August.
As you grow, start tracking how long each item takes from purchase to sale. That tells you how long inventory sits and which sourcing months pay back best. If you plan on scaling your reselling business, those numbers should drive where and when you buy.
The Four Sourcing Windows to Plan Around
Reselling is buy low, sell high, and this calendar puts dates on the buying half. Your four biggest sourcing windows are January clearance, spring cleaning donations, off-season summer sourcing, and the back-to-school donation wave. Buy heavily in those windows, store what you find, and list it ahead of each selling season.
Frequently Asked Questions
Are estate sales better than thrift stores for sourcing?
They serve different purposes. Estate sales often yield higher-end pieces (vintage clothing, designer goods, leather items) because families price to clear a house, not to recover value. Thrift stores give you volume and consistency. Layering both channels, with estate sales peaking April through June, gives you the widest sourcing net.
When is the best time to source swimwear?
January is your best window. Swimwear sits ignored on thrift store racks all winter, so prices are at their lowest and selection is highest. You can source pieces for $2-5 each and list them in March and April when vacation planners start shopping, often for several times what you paid.
How do Goodwill color-tag rotations work and how do I use them?
Goodwill and many regional chains assign a color tag to each item when it hits the floor. After a set number of weeks, that color goes 50% off, then clearance-priced at $1-2 before being pulled. Ask your local store which color is discounted this week and when the rotation resets, then time your runs to hit items on clearance day rather than paying full thrift-store price.
What kids' clothing sizes sell fastest when reselling?
Sizes 2T through 8 move the quickest because parents replace kids' wardrobes most frequently in those years. Brand matters a lot. Old Navy, Gap, and Carter's at $2-4 each can resell for $8-15 as lots, while Nike and Gymboree pieces sell individually for $10-20. Source during the spring cleaning surge in March-April and the back-to-school donation wave in late July.
Is athletic wear from Nike or Lululemon worth sourcing year-round?
Yes. Nike, Lululemon, Adidas, and Under Armour sell consistently across every month because buyers are replacing worn-out gear or upgrading, not waiting for a season. A Lululemon Define jacket sourced for $6 at a thrift store can sell for $35-55 in any month. Grab these whenever you find them.
What should I do with off-season inventory that isn't selling yet?
Keep it listed with accurate seasonal keywords and let it sit. A winter coat listed in July occasionally sells to a buyer in the Southern Hemisphere or someone shopping early. Avoid discounting off-season inventory just to move it, because the full margin comes when your selling window arrives. If a piece hasn't sold after two full seasons, reassess the price or condition.