December sales pay out in January because every marketplace holds the money for a while after the order. Amazon releases funds seven days after delivery under its standard reserve, then pays on a settlement cycle, then the bank takes a few days. Walmart pays on a 14-day cycle and usually pays an order in the cycle after it ships or is delivered. Shopify Payments and eBay are faster but still lag by days. Stack those delays on top of last-minute gift orders in the second half of December, and a large share of December revenue arrives as January cash.
The figures below come from each company's seller help pages, as of October 2026. Your account may differ; new sellers and accounts under review often see longer holds.
Illustrative timeline. Take a single $50 order placed Sunday, December 20, 2026, on each channel. Holiday bank closures (December 25 and January 1 are both Fridays this year) add a day or two to anything in transit that week.
The same $50 sale arrives anywhere from three days to five weeks after the order. A seller whose December sales lean toward Amazon and Walmart carries the longest gap.
Illustrative numbers. Take a seller with December net proceeds (after marketplace fees) of $450,000: $300,000 from Amazon, $60,000 from Walmart, and $90,000 from Shopify.
January receives $120,000 plus $51,000 plus $9,000, or $180,000. That is $180,000 divided by $450,000, or 40 percent of December's proceeds.
Now look at what goes out over the same weeks. The supplier for the December restock was paid in October or November. December's storage, ad charges, and inbound placement fees are billed in January. Amazon's 2026 extended holiday returns policy lets buyers return November and December purchases until January 31, 2027, and refunds come straight out of the January settlements. A seller planning a Q1 purchase order in early January may find the bank balance lower than December's P&L would suggest, and higher in late January than January's P&L can explain.
Two errors show up every January.
Reading the bank as profit. January deposits are large, January sales are small, and a seller looking at cash alone thinks January was a strong month. Most of that cash is December's. On accrual books, those proceeds sit as a receivable from each marketplace at December 31 and clear when the payout lands.
Booking settlements by payout date. An Amazon settlement that runs from late December into early January contains transactions from both years. If it posts to QuickBooks or Xero as one entry dated when it closed, December's last week moves into January. That is the year-end cutoff problem, and it distorts both the December P&L and the 2026 tax-year totals your CPA works from.
The fix for both is the same: post each marketplace's transactions by their own date, into a clearing account, and let the payout clear the balance. ConnectBooks reconciles Walmart, Amazon, Shopify, eBay, TikTok Shop, and Temu settlements and syncs them to QuickBooks or Xero, as summarized entries or item-level detail. Confirm how a settlement that spans month-end is dated in your setup; once it is split correctly, the open balance owed by each channel at December 31 is the number you want for the cash plan. How Amazon's reserves themselves post is covered in how reserves, holds, and disbursements hit your books.
Start in November, while there is still time to adjust a purchase order or a credit line.
The lowest point usually falls between Christmas and the second week of January. Knowing the date and the size of that low point is the whole exercise. The payout schedules will not change for your benefit, so the plan has to.
Running an e-commerce business comes with plenty of challenges, but ConnectBooks is here to make your life easier. With real-time insights, seamless integrations, and detailed tracking of your profitability and inventory, you can stay ahead of the game. Whether you’re selling on Amazon, Shopify, Walmart, TikTok or eBay, ConnectBooks helps you manage your finances with 100% accuracy and confidence, so you can focus on growing your business.
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