Amazon FBA auto replenishment
Sep 8, 2026 by Dihan Stoltz · 5 min read
Amazon FBA restocking without the guesswork. TSeller's Auto Replenishment has covered Takealot for a long time, and it now does the same job for Amazon: it pulls every FBA offer with its stock, inbound units, days of cover, and 30-day sales into one screen, works out a send quantity for each SKU, and builds the Send to Amazon file you upload in Seller Central. Amazon's own restock numbers are genuinely hard to plan around — days of supply gets skewed by inbound stock, aged units, and one-off sales — so most sellers end up opening SKU after SKU, checking last month's sales by hand, and guessing at a quantity. This post walks through what the tool does and how to use it. If you already run Takealot replenishments in TSeller, it works the same way — see the Takealot auto replenishment post for that side.
Why Amazon Restock Planning Is So Painful
The number Amazon shows you is days of supply, and it is a blunt instrument. It moves when a shipment goes inbound, it moves when aged units sit unsold, and a single unusual week of sales can drag it somewhere unhelpful. It also does not tell you the thing you actually need to know, which is how many units to put in the next shipment. So the real work happens off-platform: open a SKU, look at what sold in the last thirty days, check what is already on its way, subtract, round up, move to the next SKU. On twenty listings that is an afternoon. On two hundred it does not get done at all, and the listings that quietly run dry are the ones that were selling well enough to deserve better.
Every FBA Offer on One Screen
Open Auto Replenishment and TSeller shows your Amazon FBA offers with the four numbers that decide a restock: fulfillable stock at Amazon, units already inbound, days of cover left before the listing runs dry, and units sold in the last thirty days. A compliance score at the top rates how well your catalogue is stocked overall, so you can see at a glance how many offers are healthy and how many need attention. Crucially, inbound stock is counted before any recommendation is made — a SKU with a shipment already on the way is not told to send more. That is the single most common way a manual restock goes wrong, and it is handled for you.
Four Ways to Work Out What to Send
Auto Balance Stock is the everyday setting: it targets your last thirty days of sales plus a ten percent buffer, which keeps roughly a month of cover on each listing, and it seeds a single unit into anything that is completely empty. Compliance Restock is the minimum viable move — one unit to every FBA offer with nothing at Amazon, so no listing is sitting at zero. Max Restock goes deepest, sizing each shipment to about sixty days of cover at your current sales rate, which is what you want before a big sales period. Advanced Restock hands you the controls: filter by SKU pattern to work through one range at a time, filter by brand to restock only one label, and set your own days of cover — thirty, sixty, ninety, or whatever your category actually needs. Fast movers that clear a month's stock in a week are exactly the case custom cover was built for.
Prep, Labelling, Expiry Dates and Case Packs
Before you export, you set the details Amazon asks for on the shipment itself. Send quantities are editable on every line, so a recommendation is a starting point rather than a decision made for you. Choose who handles prep and who handles labelling — Amazon or you — either as a default across the shipment or per SKU where one product differs. If your products need them, add expiry dates, and fill in case pack details: units per box, number of boxes, and box dimensions and weight. Get these right here and the upload goes through cleanly; leave an expiry date off a product that needs one and Seller Central will ask for it later, which is the most common reason a file needs a second pass.
Built for Sellers on Amazon.co.za
There is no shortage of FBA restock software, but almost all of it was built for the United States and European marketplaces, and a good deal of it does not cover amazon.co.za at all — which makes it useless to a South African seller no matter how good the forecasting is. TSeller is built here. Amazon.co.za is supported as a first-class marketplace, prices and costs are in rand, and the replenishment tool sits in the same dashboard as your Takealot account rather than in a separate subscription bought from overseas. For the many South African sellers running Amazon alongside Takealot, that matters more than another forecasting model: one tool, one login, one set of product costs, and the same restocking workflow on both marketplaces.
Download the File, Upload It in Seller Central
Hit download and TSeller builds a workbook that matches Amazon's own Send to Amazon file upload template exactly — the same sheet name, the same column headers, in the same positions Amazon expects. That precision matters, because Seller Central rejects anything that does not match. In Seller Central go to Inventory, then Manage FBA Shipments, then Send to Amazon, choose File upload, and pick Upload complete file. Every SKU and quantity populates for you, and you finish creating the shipment exactly as you normally would. What was an afternoon of opening listings and doing arithmetic becomes a couple of minutes and one upload.
Conclusion
Running out of stock at Amazon is the quietest way to lose sales — the listing does not disappear, it just stops converting, and the ranking you built goes with it. Getting restocks right is mostly a data problem, and it is a data problem TSeller is already solving for your Takealot account. Now it does the same for Amazon FBA: check your compliance score, pick a strategy or dial in your own days of cover, adjust any quantities you disagree with, download the file, and upload it. This feature is new, and we would genuinely like to hear what you would change — particularly what days of cover you run on Amazon and whether thirty days suits your category. Start your free 14-day trial at https://tseller.co.za, or if you are already a TSeller user, open Auto Replenishment under More Features, switch to Amazon, and try it on your next shipment.
