If you are a TikTok Shop US seller on a $42 average item price, running the 20-day window from 11 to 30 November with Black Friday on the 27th and Cyber Monday on the 30th, deciding whether to lead with a discount, free shipping, or both, the decision in front of you is not how deep the voucher goes. It is what share of it you fund, and how many more units that share has to sell before it pays for itself. Twenty days is not one campaign, it is three, and the same offer costs a different amount in each. For most US sellers the instinct is to lead with free shipping because it is what buyers ask for. On a $42 item that instinct is expensive: canceling a $5.60 shipping charge removes $5.60 of revenue and reduces almost no cost, while a 15% discount removes $6.30 of revenue and hands back $1.32 of it in commission and affiliate commission that are charged on the discounted price. The cheaper lever is the one that looks more generous.
Take a $42 item at 45% cost of goods, so $18.90, with $5.60 of shipping charged to the buyer at cost, a 6% referral fee and 15% to the affiliate, both charged on the item price. Undiscounted, profit is $14.28. A 15% discount takes the item to $35.70: cost stays at $18.90, shipping at $5.60, the referral falls to $2.14 and the affiliate to $5.36, so profit is $9.30 and the discount cost you $4.98, not $6.30. A 20% discount takes it to $33.60 and profit to $7.64, a cost of $6.64. Now try free shipping instead: revenue drops by $5.60 with no fee relief on the item at all, profit is $8.68, and the cost is the full $5.60 for a smaller perceived saving. Stack 15% with free shipping and profit is $3.70; stack 20% with free shipping and it is $2.04, which needs seven times the undiscounted volume to break even.
Twenty days, three phases, and one ladder that has to hold across all of them
The US window runs from 11 to 30 November, which is twenty days and three distinct phases: preheat from the 11th to the 19th, buildup from the 20th to the 26th, and peak across the 27th to the 30th with Black Friday on the 27th and Cyber Monday on the 30th. Sellers who plan one offer for the whole window are pricing a three-phase event as a single event, and they are usually pricing it at the depth that only the last four days can afford. The reason this matters more in the US than in the other four markets is the shipping convention: buyers here expect free shipping to be part of the deal rather than a separate line, so the offer almost always gets stacked, and the stacked combination is the one that breaks the arithmetic.
The three fee lines behave differently under each lever, and that difference is the whole decision. The referral fee at 6% and the affiliate commission at 15% are both charged on the item price after discount, so they shrink when you discount and they shrink when you cut the price for any other reason. Shipping charged at cost is a pass-through: it is neither profit nor cost until you waive it, and when you waive it, it becomes pure cost with no fee relief attached. That is why the same $5.60 of perceived value costs more as free shipping than as a discount. The lever that reduces revenue without reducing a fee line is always the more expensive one per dollar of saving the buyer sees.
Step 1 — Fix the three fee lines before you touch the offer
Get the three lines right before you design anything. Item price, cost of goods as a percentage of item price, shipping charged at cost, referral at 6% of item price, affiliate at 15% of item price. On the $42 example that is $18.90, $5.60, $2.52 and $6.30, leaving $14.28. If your affiliate rate is not 15% and your cost of goods is not 45%, the ratios below move, so compute your own before borrowing these. What does not move is the direction: discounts give back fee relief, free shipping gives back nothing, and the gap widens as the item price falls, because shipping is a larger share of a smaller number.
Run the shipping comparison on a lower price point as well, because that is where the US catalogue usually sits. At a $24 item with $5.60 of shipping, waiving the shipping costs 23.3% of the item price, against a 20% discount that costs 16% of it after fee relief. At $24 the free-shipping lever is more expensive than a 20% discount while looking like a smaller concession to the buyer. This is the single most common pricing error in this market, and it is invisible on a P&L that treats shipping as a separate pass-through line rather than as a lever with a cost.
If you would rather not rebuild the comparison for every SKU, the offer-cost sheet is on the dashboard page — register with DAMI and ask the team for the offer-cost sheet and it prices a discount and a free-shipping waiver side by side on the same item.
Step 2 — Compare free shipping against a discount on net cost, not on face value
The ladder should be built backwards from the peak, not forwards from the 11th. Decide what the last four days can afford, which on the numbers above is a 15% discount without free shipping, or 20% without free shipping if the SKU can carry it, and then make every earlier phase cheaper than that. A practical shape is a shallow rung from the 11th to the 19th, a middle rung from the 20th to the 26th, and the full rung from the 27th to the 30th, with the free-shipping waiver held back until the peak so that it lands on the days when conversion is already high and it is doing the least work. Holding the waiver back is not a trick: it is the only way to keep its cost off the twenty days where it changes nothing.
There is a volume argument for the ladder as well, and it points the same way. Traffic in the preheat phase is cheap and converting poorly, so a deep offer there buys orders that a shallow offer would also have bought, at a higher cost. Traffic in the peak phase is expensive and converting well, so a deep offer there buys incremental orders at the moment they are cheapest to close. Put the depth where conversion is already high and the depth is doing incremental work; put the shallow rung where conversion is low and the depth is mostly subsidising demand you already had.
Step 3 — Build the ladder so the deepest rung only runs on the last four days
Black Friday and Cyber Monday are not the same buyer even though they sit three days apart. Black Friday traffic in this market is broad and gift-driven, so it responds to depth and to shipping; Cyber Monday traffic is narrower and self-directed, so it responds to depth on specific SKUs and barely at all to shipping. That means the free-shipping waiver is worth most on the 27th and least on the 30th, while a SKU-level discount on the 30th does more work than a store-wide one. Running one offer across all four days averages two different responses into one number that fits neither.
Stock is the constraint that makes this decision irreversible, so price it in. A 7 times volume requirement on the stacked rung means seven times the units, and if the SKU is a single production run you either have them or you do not. Running out during the peak phase is worse than running a shallower offer, because the traffic has already been paid for and the conversion you lose cannot be recovered by discounting later. Before the window opens, put the unit requirement next to the break-even multiple for every SKU that gets the deep rung, and drop the ones where the stock is not there.
Step 4 — Black Friday and Cyber Monday are two different buyers
Set the deepest rung only on the SKUs whose contribution rate clears it, and count how many that is before the window opens. On the $42 example the undiscounted contribution is 34% of the item price, so a 20% discount plus free shipping leaves $2.04 and needs 7 times the volume; the same 20% without free shipping leaves $7.64 and needs 1.87 times. The difference between those two numbers is not the discount, it is the waiver. If you cannot forecast seven times your normal volume for four days on a given SKU, that SKU does not get the stacked rung, and the campaign should be built around the ones that can.
Keep a column for the realised mix, because after twenty days the number that matters is not the depth you planned but the share of orders that actually took each rung. A campaign that planned 20% and realised 13% looks like a margin win and is usually a volume loss, and the two are only distinguishable if the mix is recorded. The comparison that survives December is realised depth against realised units per rung, not planned against planned.
Where DAMI fits: three moves that keep the ladder honest
DAMI brings an 8-million-plus creator database, competitor and competitor-store creator search, automated outreach tasks, AI-assisted outreach, AI video creation, sample management, campaign management, social media management, store analytics, and multi-store team dashboards into one place. Three moves cover this, and each one leaves you with a sheet rather than an opinion.
Move 1 — Put shipping on the cost side of the comparison, not outside it
Treat the shipping waiver as a cost line with a value, alongside the discount, so both levers are priced in dollars of profit rather than in percent of tag. The output is two numbers per SKU that answer which lever is cheaper.
Move 2 — Build the ladder backwards from the peak four days
Decide the deepest rung the peak can afford, then set every earlier phase below it, holding the shipping waiver until the 27th. The output is a three-phase schedule with a stated maximum, which is what stops the window drifting to full depth by the 14th.
Move 3 — Attach a unit requirement to every SKU on the deep rung
Take the break-even multiple, multiply by the normal four-day volume, and write the unit number beside it. The output is a short list of SKUs that can carry the peak, and everything outside that list runs the middle rung.
Questions sellers ask before the window opens
Is free shipping really more expensive than a discount of the same value?
Yes, on net profit, because a discount also reduces the fee lines charged on the price while a shipping waiver does not. On the $42 example a $6.30 discount costs $4.98 of profit and a $5.60 waiver costs $5.60. The waiver is smaller to the buyer and larger to you, which is the worst combination available.
Why does the multiple jump from 1.54 to 3.86 when nothing but shipping changes?
Because the waiver removes revenue from a base that has already lost 15% of its price, and the remaining profit is small in absolute terms. $9.30 falls to $3.70 when $5.60 of shipping revenue goes away, so the denominator drops 60% while the numerator does not move. Small absolute profits produce large multipliers, which is why the ladder has to be designed on the multiple rather than on the discount.
Can I run the full offer for all twenty days to keep it simple?
You can, and it is the most common choice, but it prices the preheat phase at the peak depth. On the $42 item that is $2.04 of profit per order for twenty days instead of $14.28, which is giving up $12.24 on every order placed before the 27th. The simplicity is real; the cost is also real, and it is on the majority of the orders.
Do the 6% referral and 15% affiliate both come off the discounted price?
Yes, both are charged on the price the buyer pays, which is why a discount is partly self-funding. It is also why the affiliate line is worth checking before the window: if the rate is set per creator rather than per store, a deep offer on a high-commission creator costs more than the same offer on a low-commission one, and the difference is not visible in the campaign plan.
The window opens on 11 November and the depth is already committed. What can still be adjusted?
Which SKUs the waiver applies to, and which four days it runs on. Both change the realised cost without touching the committed discount rate. Holding the waiver until the 27th is the single largest adjustment available at that point, because it removes $5.60 from every order placed before then.
The one number to check on 1 December
Every voucher in this piece is a ratio question wearing a percentage sign. The percentage tells you what the buyer sees; the ratio tells you how much more you have to sell. DAMI brings an 8-million-plus creator database, competitor and competitor-store creator search, automated outreach tasks, AI-assisted outreach, AI video creation, sample management, campaign management, social media management, store analytics, and multi-store team dashboards into one place.
Take your top five SKUs, add one column for the shipping waiver as a cost, and compute profit under three offers: a discount only, free shipping only, and both. Twenty minutes will show you that the waiver is the expensive line, usually by more than you expected, and it will tell you which SKUs can carry the peak at all. Everything the campaign plan says about discount depth becomes a secondary question once that column exists.
Start with DAMI and put the ratio next to the discount before the campaign puts it on your P&L for you.
