How to Calculate Shipping Costs for an eCommerce Business

Have you been trying to find an accurate calculation of shipping costs for your eCommerce business, but can’t seem to find the answer?

Let MCF help you. We’re the UK’s number one fulfilment centre, and we help leading eCommerce businesses across the UK with world-class shipping.

Read the information below to discover how to calculate shipping costs for an eCommerce business.

Man in a blue shirt sealing a cardboard box labeled %22fragile%22 with packing tape, while a woman in the background checks inventory—showing practical steps in how to calculate shipping costs in a warehouse setting.

How to Calculate Shipping Costs for Your Business

First, you must understand shipping costs for your eCommerce business. It’s essential. As eCommerce is strictly online, your business relies on shipping.

Without a clear idea of costs, you can eat away at profits or give customers cold feet with hidden fees at checkout.

But how are shipping costs actually calculated?

Weight

Carriers charge based on the weight of the item (per kg/lb) or a size-based pricing model based on the space each package will require.

Each carrier, like Royal Mail, Evri or DHL, has different pricing models. Research carefully beforehand to decide which carrier suits your eCommerce business.

For example, the size-based pricing model will charge more for larger, lighter parcels because of the dimensions.

Alternatively, smaller, heavier packages will cost more if the carrier charges by actual weight.

Decide which method will suit your package dimensions and weight best to cut out any unnecessary charges.

Distance and Zones

Shipping across the country is far cheaper than international deliveries. Distance, customs, shipping tariffs, and longer delivery times will affect the price significantly.

Similar to weight, each carrier has its own international shipping price structures.

To get around international shipping costs, optimise your process with fulfilment centres.

It not only reduces costs; it opens your market to new countries, keeps international customers happy, and saves you all the hassle of international shipping.

Handling Fees

Handling fees rack up. This includes packaging fees, handling large or fragile items, and warehouse processing costs.

Unfortunately, many small businesses forget to add handling fees to their shipping cost total.

When you partner with MCF to handle your eCommerce orders, we handle your orders, relieve you of all the costs for handling fees and save you cash that you can spend on growth.

Packaging Costs

Packaging costs come with many considerations.

Firstly, packaging size matters. Selecting the correct packaging size for your parcel helps avoid unnecessary costs for dimensional charges.

On top of this, marketing comes into play. Do you want custom packaging? Do you want your brand clearly displayed on the box? All of these add up.

And if you’re an eco-friendly eCommerce brand, sustainable packaging is another cost consideration. Sustainable materials can cost more than cheaper packaging options.

Unravelling Carrier Pricing Structures

Close-up of a person using a calculator while reviewing financial documents and sales reports at a desk with a laptop.

Often, carriers use complicated price models. Let us help you understand so you can optimise your eCommerce shipping costs and save money.

Published Rates

Published shipping rates are standard prices from typical carriers like Royal Mail or UPS. A great way to compare costs is by taking advantage of online shipping calculators.

Most carriers calculate shipping rates based on the weight or dimensions of your parcel, the distance it must travel, the chosen delivery speed, and international tariffs.

Negotiated Rates

Businesses with high demand and shipping volume get access to discounted rates. This way, shipping costs are reduced.

When you partner with MCF, you gain access to negotiated bulk rates, saving you lots of money in the fulfilment process when you deliver goods.

Surcharges and Fees

Now, these are the hidden fees nobody talks about. These sneaky add-ons include fuel charges, delivery to remote areas, and delivery on weekend fees.

Plan ahead or offer a click-and-collect service to reduce extra costs and save cash to invest in scaling your business.

Shipping Cost Calculation Methods

Warehouse worker in safety gear organizing large cardboard boxes with a hand trolley, representing the logistics side of how to calculate shipping costs based on package size and weight.

While there are different ways to calculate shipping costs, selection is important. Investing in the right method for your business affects profit.

Basic Shipping Formulas

1. Flat-Rate System

A flat-rate system charges the same for all orders, regardless of parcel dimensions or weight.

If you’re a small business, take advantage of a flat-rate system for predictable, transparent prices. This means you can focus on your business instead of complex calculations.

2. Cost-Based Pricing

With cost-based pricing, shipping is calculated on product cost percentage. This method gives you control with a clear, desired profit margin for each order.

It’s also a simple pricing strategy.

Real-Time Rates

Real-time rates are calculated at checkout based on the customer’s location and the weight of the order.

It’s useful for small businesses and all eCommerce platforms as it stops you from undercharging or overcharging for each order.

Benefits of Fulfilment Partnerships for Shipping Cost Optimisation

Wide view of a modern warehouse with stacked cardboard boxes, conveyor belts, and workers managing packing stations.

Partnering with a third-party fulfilment company, like MCF, can help eCommerce businesses reduce shipping costs, improve delivery efficiency, and scale their business faster.

How We Help Clients Solve Shipping Challenges

Bulk Discounts: Gain access to exclusive bulk shipping discounts to save you money on high-volume orders–perfect if you’re trying to scale.
Multiple Warehouses: Extensive storage space in two areas minimises shipping distance costs, so you save money.
Streamlined Handling: We take care of handling; you take care of scaling your eCommerce store.
Real-time Shipping Rate Integration: Automate shipping to improve customers’ checkout experience and boost your conversion rates.
Flexible Shipping: Offer all tiers of shipping, as well as shipping on weekends when others don’t, so you can get ahead of your competitors.

Want to Improve Your eCommerce Shipping Strategy?

Don’t let unexpected costs add to your overheads in 2025.

Allow the UK’s leading third-party fulfilment company to revolutionise your shipping strategy with lower rates, fast deliveries, and an effortless integration with your chosen eCommerce platform.

Get a quick quote today and focus on scaling your business instead of calculating shipping costs.

Article prepared & written by CreateTheWeb.