What the solo tax is
Travelling alone costs more per person than travelling in a pair. Everyone who has done it knows this in their gut; almost no one has a name for it or a number on it. Call it the solo tax — the sum of every cost that a second person would have halved, plus every price the travel industry sets specifically higher for one.
It is not a minor grievance. In our 2026 survey, the higher cost of travelling alone tied with personal safety as the single biggest concern for solo travellers, both at 68%. And the frustration is directed squarely at the industry: 68% of travellers want companies to stop charging solo travellers more. The solo tax is the rare travel problem that is felt by nearly everyone and defended by almost no one.
This is an original analysis of where that tax hides, how big each piece is, and what actually reduces it.
The four components
The solo tax isn't one charge. It's four different mechanisms, and they don't respond to the same defences.
1. The single supplement — the explicit tax
This is the most visible and the most resented. Tours, cruises, and many hotels price rooms for two people. Book as one, and you pay a single supplement — commonly 30% to 100% of the base price — because the operator would rather charge you for the empty second bed than earn less on the room. On some cruises and premium tours, a solo traveller pays close to double for the privilege of a room to herself she never asked to pay twice for.
This is the purest form of the tax: not a cost you incur, but a penalty the industry assigns for arriving alone. It's also the one the 68% are angriest about, and the one a few operators are starting to drop as solo travel becomes the majority of the market.
2. Minimum-two pricing — the hidden version
Quieter but everywhere: private tours, cooking classes, transfers, and activities priced "from €X per person, minimum two." Show up as one and you either pay for the phantom second person or can't book at all. The tax here is invisible until checkout, and it quietly shapes what a solo traveller can even do.
3. Per-unit costs that don't split
The structural tax, and the largest in raw money. A taxi from the airport costs the same whether one or two people ride it — but a pair splits it and you don't. Same for a rental car, a bottle of wine, a family-size anything, the fixed portion of accommodation. None of this is a penalty anyone charges you; it's just that half of every splittable cost, the half a companion would have covered, lands entirely on you. Across a whole trip this is usually the biggest slice of the solo tax, precisely because it's spread thin and never itemised.
4. The women-only premium
A narrower but real one: women-only dorms and female-only floors sometimes carry a small premium over mixed equivalents — a safety feature that costs money. It's usually modest, and for many women it's worth every cent for the peace of mind. But it's still a case of paying extra for something that reads a lot like basic safety, which is worth naming plainly.
Where it bites hardest: accommodation
Of the four, accommodation is where the solo tax does the most damage, because a room is fundamentally priced per room, not per person. A €120 double is €120 whether one or two people sleep in it. That single fact makes lodging the line where solo travellers overpay the most in absolute terms.
It's also, usefully, where you have the most control — because accommodation has formats built around per-person pricing.
Lisbon is a deliberate example. Its daily cost is low for Western Europe, and that's not incidental to the solo tax — it's the single best lever against it. When the per-night floor is cheap, the un-splittable half of your lodging bill is small in absolute terms, which is a large part of why affordable-but-easy cities like Lisbon dominate first-trip lists. You feel the solo tax far less in a €70-a-day city than a €200-a-day one, even though the mechanism is identical.
The formats that dodge the tax
The solo tax is structural, so the defences are structural too — not "spend less," but "choose formats priced per head."
- Hostels and social guesthouses. A dorm bed is priced per person by definition — the format that most directly beats the single supplement, and it solves loneliness at the same time.
- Per-person tours and group day trips, over private and minimum-two bookings. Join a scheduled group and you pay for one seat, full stop.
- Rentals with a kitchen, so food isn't every-meal-out — the un-splittable restaurant markup adds up fast for one.
- Cheap, split-free ground transport. In cities with good metros and cheap rideshare, the "companion would've split the cab" tax nearly vanishes.
- Operators who've dropped the single supplement. A growing number have, precisely because solo travellers are now roughly 84% women and the majority of the market. Reward them; they're voting the way the 68% want the industry to vote.
The point
The solo tax is real, it's quantifiable, and it's the co-leading reason women hesitate to travel alone. Most of it isn't malice — it's pricing built for a world where everyone travelled in pairs, a world that no longer exists. Some of it (the single supplement) is a genuine penalty on solo travellers, and it deserves the pressure it's getting.
Until the industry finishes catching up, the tax is manageable rather than avoidable: choose per-person formats, favour cities where a bed is cheap, and don't quietly pay a single supplement you could have designed around. Going alone should not cost double. Increasingly, if you book it right, it doesn't have to.