How to Set a Free Shipping Threshold From Real Costs

A free shipping threshold should be set from your real fulfilment costs and your margin, not from what a competitor offers. The rule is simple: free shipping is only worth offering when the extra spend it encourages earns back more than the shipping you now absorb. Marketing sets the number on the banner. Operations pays for every parcel that qualifies.

This guide shows how to work out the cost of a parcel, how to test a threshold with your own numbers, and what to change if the sums do not work.

What a parcel really costs you

The carrier price is only part of it. For each order, add:

• Carrier charge for the service and weight band you offer

• Pick and pack fee, from your 3PL or your own labour

• Packaging materials: box, mailer, filler, tape, inserts

• Any payment fee that applies to the shipping portion

• A share of returns, where free shipping increases them

Our guides to pick and pack pricing and what a good cost per order looks like show where each line comes from. Get these figures from your last three months of orders, not from a rate card alone.

The break-even sum

Suppose, as an invented example, that delivering one order costs you £4.20 in total, and your margin on products is 45 percent. If you offer free shipping over a threshold, you absorb the £4.20 on every order that qualifies.

Every extra £1 a customer adds to their basket brings you 45p of margin. To cover £4.20 of shipping, the basket needs to grow by about £9.33 (4.20 divided by 0.45). If your threshold sits £9.33 above the amount people spend today, free shipping only breaks even. If customers on average stretch less than that to qualify, you are paying for the offer.

Use your own numbers: your product margin and your delivery cost per order. The formula is: shipping cost divided by margin percentage equals the extra basket value you need.

Start with your average order value

1. Find your average order value (AOV) over the last 90 days.

2. Look at the spread. How many orders fall in each £5 or £10 band? A threshold in a band with many orders just below it will lift baskets. A threshold nobody can reach will not.

3. Set a first threshold a little above your AOV, within the break-even gap you just worked out.

4. Check what share of orders already qualify. Those orders now cost you shipping for no gain.

Things that change the sum

• Weight and size. Heavy or bulky products cost more to send. A single flat threshold can hide big differences between products. Parcel size matters too, so check dimensional weight with your carrier.

• Destination. Delivery to the Highlands, islands or abroad costs more. Consider a separate threshold or exclude those zones.

• Delivery speed. Free standard delivery is cheaper to offer than free next day.

• Returns. If free shipping raises your return rate, add the cost of those returns to each order.

• Your fulfilment contract. Carrier rates and pick fees can change as you grow. Revisit the threshold when they do.

Options if the numbers do not work

• Raise the threshold, if enough customers will stretch to it.

• Charge a flat rate below the threshold and make it close to your real cost.

• Build the shipping cost into product prices for items that are always sent alone.

• Bundle products so the basket reaches the threshold naturally.

• Offer free shipping to members or on subscriptions only.

• Review your carrier mix or packaging. A smaller box can change the price band.

Test it before you commit

Change one thing at a time and give it enough orders to read. Track four numbers before and after: AOV, orders per week, shipping cost per order and margin per order after shipping. If AOV rises but margin per order falls, the threshold costs more than it earns.

When you are choosing a provider, ask for rates by weight band and zone, so you can model this. Our guide to what a 3PL costs in the UK lists the lines to ask for.

People Also Ask

How do I set a free shipping threshold?

Work out what delivering an order costs you, divide it by your product margin to find the extra basket value you need, and set the threshold above your average order value by about that amount or less. Then test it on real orders.

Is free shipping worth it for small businesses?

It can be, when it lifts basket size by more than it costs. It is not worth it if most orders already qualify or if the extra spend does not cover the shipping you absorb.

What should my free shipping minimum be?

There is no standard figure. Start a little above your average order value, check it against your break-even sum and adjust after a few weeks of data.

Finding the right 3PL partner

FulfilQ's advisor, Logan, matches brands to verified providers by order volume, product type and region. Tell Logan what you ship and where it goes, and you get a shortlist with rates you can use to test your threshold. Start at fulfilq.com or browse the full provider directory.