Back to the app

What happens if the carrier charges a surcharge for weight or size?

Updated October 24, 2026

If the parcel is bigger or weighs more than you declared, the carrier may charge a surcharge. Colectin may charge it to the seller and it is deducted from the sale amount.

The weight you choose

When you prepare the shipment you choose a weight range: Up to 1 kg, 1 to 2, 2 to 3, 3 to 5, 5 to 10, 10 to 15, 15 to 20, 20 to 30 or More than 30 kg. Colectin takes care of the box size. A wrong value can cause a carrier surcharge.

The parcel size

The size is optional. If you fill it in, the price uses the volumetric weight when it is higher than the chosen weight (Correos calculates 6,000 cm³ per kg). If you leave it empty and the parcel is bigger than usual for its weight, the carrier may add a surcharge and Colectin may charge it to the seller.

With Correos, the longest side can measure up to 120 cm on national shipments and 105 cm on international ones. The girth can reach 210 cm on national shipments and 200 cm on international ones.

How the surcharge is charged

The surcharge is issued on a separate invoice to the seller, with their country's taxes. If you do not pay it, it stays as a debt in the wallet under the name Shipping correction owed, and it is deducted from your next sale if you do not pay it before. You can also pay it at the time with Pay now.

Read shipping settings, shipping modes and how to print and hand over the label.

FAQs on this topic

How much does shipping cost?

With Colectin Shipping the buyer pays the carrier's rate and chooses the cheapest or the fastest option. With Manual shipping, the seller sets the package price, or can offer free shipping and ship at their own cost. Read shipping settings.

Which shipping modes are there?

There are three: Colectin Shipping (carrier-quoted, with automatic label and tracking), Manual (with your own carrier) and meetup. Each piece can have its own, and the mode your new pieces use by default is set in Default shipping mode. Read shipping modes.

How do I hand over my parcel with Colectin Shipping?

Colectin buys the label automatically after payment; you download or print it from the order, in A4 or A6. You drop the parcel at any Correos office or at a Citypaq, if the label's service allows it. Read shipping modes.

How long do I have to ship, and what happens if I do not ship in 7 days?

You have 7 calendar days to get the parcel moving: with Colectin Shipping they count from when the label is created, and with your own carrier, from payment. Colectin does not cancel the order automatically; an admin reviews it and can cancel it with a full refund to the buyer. Read shipping within 7 days.

How do I track my order?

With Colectin Shipping you see Estimated arrival, a date range counting business days from when the carrier receives the parcel. With your own carrier you see the carrier and the tracking link, and you follow the parcel on the carrier's page. Read tracking and arrival.

Related articles

Need more help?

Write to us from the support chat or by email.