Subscribe & Save discounts come out of your margin — on the first order and every reorder after it

Key takeaways

• Amazon's own description of the program: sellers choose a base funding level of 0%, 5% or 10%, paid by the seller on every subscription order. When a customer's delivery contains five or more subscribed items, Amazon funds an additional 5% on top. That is the whole funding split.
• There is no participation fee. Referral and FBA fees apply to the discounted price, so the discount comes out of your contribution margin, not out of Amazon's.
• Eligible FBA products are auto-enrolled at 0%. At 0% the customer sees no seller discount on baskets under five items — which is why most 'S&S did nothing' verdicts come from sellers who never funded it.
• The right comparison is against your advertising cost per order. A subscription reorder arrives without a click; a one-time sale carries your full TACOS. Where TACOS on the SKU exceeds the funding tier, the reorder is the cheaper sale.
• A stockout on a subscribed SKU cancels subscriptions rather than pausing them. Inventory on S&S SKUs is planned on worst-case lead times.

Subscribe & Save is the only lever in Seller Central that turns a one-time buyer into recurring revenue. It fails two ways, and they mirror each other. Some sellers never switch it on. Others switch it on at 0%, watch nothing happen, and decide the program doesn’t work. It was never running.

01Who funds what

Amazon states the structure plainly on its seller education site. The customer sees one number; two parties pay it.

Layer	Rate	Funder	Applies
Base discount, set per SKU	0%, 5% or 10%	Seller	Every subscription order, first and all reorders
Tiered discount, 5+ subscribed items in one delivery	+5%	Amazon	On top of the base, at Amazon’s discretion

So a 10% seller-funded SKU displays as “up to 15%”; a 5% SKU as “up to 10%”; a 0% SKU shows nothing to a customer with fewer than five subscriptions and 5% (Amazon’s money) to one with five or more. Seller promotions and coupons can stack on top.

Two facts complete the cost picture. Amazon charges no separate fee for participation — unlike deals and coupons, there is no upfront charge and no percentage skim. And referral and FBA fees are charged on the discounted price, which is why the discount is a margin cost and not a revenue-share cost.

Seller Central > Advertising > Subscribe & Save > Manage products — funding level per SKU, automatic-enrollment preference, active subscription counts and inventory status. This is where the 0% default is changed; it is not changed from the listing.

02The worked example, both halves

A $28 supplement selling 900 units a month at a 32% contribution margin — $8.96 per unit.

The ugly half. At 10% seller funding, every subscription order gives up $2.80. Contribution on a subscribed unit drops to $6.16, a 31% cut on per-unit margin, on every reorder for as long as the subscription runs.

The half that changes the answer. A subscription reorder arrives with no click, no CPC and no coupon clip — near-zero acquisition cost. The one-time sale it replaces did not. At a 15% TACOS on this SKU, the one-time $8.96 unit was netting $4.76 after advertising. The subscribed reorder nets $6.16.

The general form:

subscribed reorder contribution = price × (1 − funding) − referral − FBA − COGS
one-time sale contribution     = price − referral − FBA − COGS − (price × TACOS)
S&S wins when: funding tier < TACOS on that SKU

The PPC budget calculator gives you the TACOS side; the margin calculator gives you the rest.

03What it takes to get in, and to stay in

Amazon determines eligibility from fulfillment history, in-stock rate, sales performance and price consistency; FBA products meeting the bar are auto-enrolled at the 0% base, and merchant-fulfilled sellers must request enrollment per product. Brand Registry is not a stated requirement but is the practical route to the listing controls that make the program work. The in-stock expectation in seller reporting is 90% or above.

The in-stock requirement is not bureaucratic. Subscriptions are commitments, and the failure mode is blunt: a stockout does not pause subscription sales — it cancels subscriptions, and canceled subscribers rarely re-subscribe. Once a customer subscribes at a given discount, that rate is locked for them until they skip or cancel; you cannot quietly lower it later.

The compensating gift: the Subscribe & Save dashboard forecasts committed demand — active subscribers, delivery frequency, churn — 60 to 90 days out. No one-time SKU gives you a forward order book.

04Which SKUs this is for

Consumables with genuine replenishment demand: supplements, pet food, coffee, household and beauty consumables, baby products. A product nobody buys twice is a product nobody subscribes to, and funding a discount on it is a coupon with extra steps.

On the tier, start at 5%, measure conversion and subscriber growth on the dashboard for a full replenishment cycle, and only then test 10%. Amazon’s own guidance is the same: test 5%, then step up if the data justifies it. Jumping to 10% before subscriptions stabilise locks the highest discount onto every early subscriber for the life of the subscription.

05What to do

• Check what tier your auto-enrolled SKUs sit at. If the program was “tried” at 0%, it was never tried.
• Fund only what the margin carries, and compare against TACOS, not zero. The discount is a customer-acquisition cost replacing a different one.
• Treat subscriber inventory as senior debt. Reorder points on S&S SKUs use worst-case lead times, not averages — and the low-inventory-level fee is charged on those same units if they run thin.
• Do not raise the list price to fund the discount. Price consistency is an eligibility factor, and the customer comparison is against your own recent price.

Go to Manage products and read the funding column. If it says 0% next to a consumable that sells, you have found the cheapest test you will run this quarter.

Frequently asked

Does Amazon charge a fee for Subscribe & Save?

No participation fee. The cost is the seller-funded base discount — 5% or 10% of the subscription price on every order — with referral and FBA fees charged on the discounted price.

Who pays the "up to 15%" the customer sees?

Two funders. The base 0%, 5% or 10% is seller-funded. The additional 5% when a delivery contains five or more subscribed items is Amazon-funded. Your exposure is your chosen base tier, never the full 15%.

Why did S&S do nothing for my product?

Usually because it was enrolled at the 0% default, which shows no seller discount to a customer with fewer than five subscriptions. Change the funding level under Advertising, Subscribe & Save, Manage products.

Is the discount worth it?

Compare it with your advertising cost per order on that SKU. A reorder carries no CPC; a one-time sale carries your full TACOS. If TACOS exceeds the funding tier, the subscription order is the cheaper sale.

What happens if a subscribed SKU goes out of stock?

Subscriptions are canceled, not paused, and canceled subscribers rarely return. Plan S&S inventory on worst-case lead times.

Sources

1. What is Amazon Subscribe & Save? (0%, 5% and 10% seller funding; Amazon-funded 5% on five-or-more-item deliveries; promotions stack; manage funding on the Manage products tab), Amazon, sell.amazon.com seller education Primary source accessed 2026-09-04
2. Amazon Subscribe & Save data deep-dive 2026 ($28 supplement worked example; 0%-funding failure mode), Velocity Sellers Secondary accessed 2026-09-04
3. Amazon Subscribe & Save best practices (discount rate locked per subscriber until skip or cancel; auto-enrollment of replenishable products), Pattern Secondary accessed 2026-09-04
4. Amazon Subscribe and Save: complete seller guide for 2026 (90%+ in-stock expectation; FBM enrollment by request), AMZ Dudes Secondary accessed 2026-09-04