Sending something heavy is a question about ladders rather than rates, because every company that publishes a price above five kilograms publishes it as a series of steps and the steps are in different places. Evri's is nearly flat from two to ten kilos and then jumps; Parcelforce's starts more than twice as high and rises gently to thirty. Which is cheap depends entirely on what your parcel weighs, and there is no general answer to give.
The two published ladders and where they cross
Evri publishes £6.59 for 2-5kg, £6.68 for 5-10kg and £10.28 for 10-15kg. Parcelforce publishes £11.95 up to 5kg, £14.20 to 10kg, £17.95 to 20kg and £21.40 to 30kg. At every weight they both cover, Evri's published figure is lower; what Parcelforce has is reach, because its ladder is the only published one that goes past twenty kilograms at all.
Royal Mail's odd position in the middle
Royal Mail's Medium Parcel takes up to 20kg at one price, £6.25 online on 2nd Class, which on paper is the cheapest heavy option anywhere in this record. The catch is the dimension: a Medium Parcel must also fit inside 61cm x 46cm x 46cm, and most things that weigh twenty kilograms do not. Where an item is dense and small, though, it is a genuine bargain and it is easy to miss.
What heavy changes besides the price
Collection stops being optional, and only Royal Mail publishes what collection costs, at 30p an item on Tracked 24 and Tracked 48 bought online. Packaging stops being a formality, because a box that fails does so under its own weight in a sorting hub. And the free compensation limit matters more, because heavy items tend to be the expensive ones and extra cover is not in any published headline figure.
When it is no longer a parcel
Past thirty kilograms nothing in this record publishes a price. That is the pallet tier, which is priced per pallet by footprint and height rather than per kilogram, and it usually means consolidating rather than splitting. If you are looking at several heavy boxes to one address, getting a pallet quote beside the parcel prices is the check worth doing.
Questions people ask about send heavy parcel
How much does it cost to send a heavy parcel?
On published figures, Evri prices 5-10kg at £6.68 and 10-15kg at £10.28; Parcelforce prices up to 10kg at £14.20, 20kg at £17.95 and 30kg at £21.40. Royal Mail's Medium Parcel takes 20kg from £6.25 online if it also fits 61cm x 46cm x 46cm. Read 10 September 2026.
What is the heaviest parcel I can post?
30kg, which is the top of the only published ladder that goes that far. Royal Mail publishes to 20kg and Evri's table stops at 15kg.
Is Evri or Parcelforce cheaper for a heavy parcel?
On every weight they both publish, Evri. Parcelforce's advantage is that its published ladder is the only one that continues past twenty kilograms.
Do I pay extra for collection of a heavy parcel?
Every company here charges separately for collection and only Royal Mail publishes the figure: 30p per item on Tracked 24 and Tracked 48 bought online.