The verdict in three sentences
Free shipping is the best lever to lift average order value — provided you place the threshold in the right spot. Too low and you give free delivery on orders the customer would have placed anyway and you erase margin; too high and no one reaches it. The 2026 rule: threshold = 1.3 to 1.6 times your current AOV, never a round number picked at random.
Three strategies compared
There are three main approaches. A flat fee is simple but dampens conversion; always-free boosts volume but eats net margin; the conditional threshold is the best compromise.
| Strategy | Effect on basket | Effect on net margin | Effect on conversion |
|---|---|---|---|
| Flat fee (KES 500) | Neutral | Protected | -8 to -14 % |
| Always free | +5 to +12 % | -4 to -9 pts | +10 to +18 % |
| Conditional threshold (1.4x AOV) | +15 to +30 % | Stable | +8 to +14 % |
Delivery of KES 300 to 700 is only absorbable above roughly KES 2,400 of basket, and only if your gross margin exceeds 25 to 35 %. Below that margin, offering free delivery even on a large basket loses you money.
How to set your threshold concretely
The threshold must cover delivery cost while nudging the customer to add an item. Here's the logic by AOV and margin.
| Current AOV | Recommended threshold (1.4x) | Min gross margin required | Message to show |
|---|---|---|---|
| KES 1,600 | KES 2,200 | 30 % | "Only KES 600 more for free shipping" |
| KES 2,400 | KES 3,400 | 28 % | "Add an item, get free shipping" |
| KES 3,600 | KES 5,000 | 26 % | "Free shipping from KES 5,000" |
| KES 5,000 | KES 7,000 | 25 % | "Free shipping: you're X away" |
The conditional message ("you're KES 600 away") is a lever in itself: it lifts conversion by 8 to 14 % by turning the fee into a reachable goal. And watch margin by zone: offering identical free delivery to a far zone costing KES 800 can turn a profitable sale into a loss.
Mini case study
Wanjiru sells accessories online in Nairobi, AOV KES 2,600, gross margin 40 %, delivery cost KES 560. She sets the threshold at 1.4x = KES 3,600. Result: 22 % of customers add an item to reach it, and the affected orders' average basket rises to KES 3,900. On those baskets, gross margin is KES 1,560 (40 %), free delivery costs KES 560, leaving KES 1,000 net margin versus KES 480 before. The threshold doesn't kill margin: it doubles it on the affected baskets while lifting volume.
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FAQ
Where should I set the free-shipping threshold?
Between 1.3 and 1.6 times your current AOV. A 1.4x threshold is the common sweet spot: close enough to reach, high enough to cover delivery cost.
Is always-free a bad idea?
Not always, but it cuts net margin by 4 to 9 points. It's only justified if your gross margin is very high (>50 %) or you make it a deliberate differentiation argument.
Do I need a minimum margin to offer free delivery?
Yes. Below 25 to 35 % gross margin, a KES 300-700 fee can't be absorbed, even on a large basket. Raise the price or the threshold first.
Does the "you're X away" message really change anything?
Yes, it lifts conversion by 8 to 14 %. It turns a resented fee into a reachable goal and drives item add-ons.
Should I adjust the threshold by zone?
Absolutely. Delivery at KES 800 in the periphery can't be absorbed at the same threshold as delivery at KES 300 downtown. Watch margin by zone to avoid losses.
Let's talk about your project. We build stores with dynamic free-shipping thresholds by zone and real-time conditional messaging. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
