Most unexpected courier charges trace back to one of three things: a weight that was guessed, dimensions taken from the item rather than the packed box, or a customs document that did not say enough. All three are avoidable at home in a few minutes with no special equipment. This page covers how to measure accurately, how collections actually work, what a customs invoice must contain, and what the various lines on a courier bill are.
Weighing accurately without parcel scales
Use bathroom scales and the difference method: weigh yourself, then weigh yourself holding the packed parcel, and subtract. It is accurate to within a few hundred grams, which is enough because bands are wide. Kitchen scales work for anything under their limit and are more precise. Always weigh the parcel fully packed and sealed, including tape and any outer wrap. Then round up rather than down: a carrier that re-weighs and finds you under-declared applies a surcharge that is normally worse than the next band up would have cost.
Measuring, and why the box is what counts
Take the three outside dimensions of the sealed box, not the item inside it. Measure at the widest points, including any bulge from tape or padding, because carriers measure the same way with automated dimensioning equipment. Note the longest side separately, since length limits are assessed independently of volume on most services. Girth, where it is asked for, is twice the height plus twice the width. Volumetric weight is the volume divided by the carrier's own divisor, and the price is set by whichever is greater, that or the actual weight.
Having a parcel collected
A collection is booked as part of the service and the driver comes on a stated day, usually within a wide window rather than at a time. The parcel must be ready, labelled and accessible, and somebody has to hand it over unless a safe place has been agreed in advance. Where you cannot be in, most networks allow a neighbour or a nominated person to release it, and a parcelshop or locker drop off avoids the problem entirely while usually costing a pound or two less. If a collection is missed, rebooking is normally free but adds a day.
What a customs invoice must contain
Six things: a specific description of each item, the quantity, the value per item and the currency, the country where the goods were made, the reason for export such as sale, gift or return, and the full details of both sender and recipient including a phone number. Vague descriptions are the single largest cause of holds, so shirts, cotton, five beats clothing. Sign and date it, and include a copy inside the box as well as in the documents wallet. Where the goods have a commodity code, put it on, since it sets the duty rate.
Questions people ask about how to weigh a parcel at home
How do I weigh a parcel at home without parcel scales?
Weigh yourself on bathroom scales, then weigh yourself holding the sealed parcel and subtract. Round up rather than down, because a carrier re-weigh that finds an under-declaration applies a surcharge.
Can someone else hand over my parcel for collection?
On most networks yes, a neighbour or nominated person can release it, or a safe place can be agreed in advance. A parcelshop or locker drop off avoids the issue and usually costs a pound or two less.
What goes on a customs invoice?
A specific description of each item, quantity, value and currency, country of manufacture, the reason for export, and full sender and recipient details with a phone number. Add the commodity code where known.
What are the charges on a courier bill?
Carriage set by weight band and dimensions, plus any surcharges for remote postcodes, oversize items or re-weighs, plus destination duty and tax and the carrier's clearance handling fee on international shipments.