Single Supplement
What is Single Supplement?
A single supplement is the extra charge applied when one traveller occupies accommodation that has been priced for two. Escorted tours, cruises, safari lodges, ski chalets and expedition trips are almost always advertised per person based on two people sharing a twin or double, so a traveller booking alone is billed the difference between that shared rate and the cost of holding the whole room or cabin. It usually appears as its own line beneath the headline price rather than inside it, which is why solo travellers often find the real cost of a trip only at the last step of a booking form.
The mechanism is straightforward — the operator has committed to a fixed number of rooms and berths, and an unshared one earns roughly half the revenue it was priced to earn — but the effect is that people travelling alone pay more per person than couples for the same trip, and the resentment the charge attracts is earned. It is also frequently substantial rather than nominal. Purely to show the shape of it: a tour advertised at £1,800 per person sharing might carry a supplement of several hundred pounds on top, and cruise lines often quote theirs as a proportion of the fare rather than a flat figure, so it scales with the cabin grade. There are real ways around it. Some operators waive or cap supplements on selected departures, particularly out of season; newer ships and some hotel groups now build genuine single cabins and single rooms that are priced as such; guaranteed-share schemes pair a solo traveller with another of the same gender and drop the charge if a match is found, honouring the shared price either way if one is not; and booking the same route independently rather than as a package puts the per-room cost back under the traveller's own control. Asking an operator directly what is available on a given departure is worth doing before paying the quoted figure, because the answer varies by departure rather than by brand.
Example of Single Supplement
Ravi had settled on a fortnight in Namibia with a small-group operator before he noticed the supplement sitting under the per-person price like a second invoice — travelling alone added close to a quarter again on his particular departure, for the privilege of not sharing a tent with a stranger. He rang the operator instead of accepting it. They offered him a guaranteed-share place at the shared rate: if another solo traveller booked the same dates he would room with them, and if nobody did he would keep the tent to himself and still pay nothing extra. Someone did book. He spent nine nights sharing with a retired hydrologist from Cardiff who snored steadily and knew the name of every bird they saw. Ravi thought that a fair exchange for the money.