MilesheetIs the M6 Toll worth it?
Britain's only tolled motorway, the time it actually saves, and the arithmetic for someone whose hours are chargeable.
The M6 Toll runs around the east of Birmingham as a relief route for the M6 through the conurbation. It is privately operated, it is the only tolled motorway in the country, and it is famously quiet.
What you are buying
Not distance — the two routes are broadly comparable in mileage. You are buying predictability.
The M6 through Birmingham is one of the most congested stretches in the country and its journey time varies enormously by time of day and by luck. The toll road's traffic volumes are low enough that it rarely does.
So the question is not "how much time does it save" but "how much is it worth not to find out".
The arithmetic for a business
Take a car toll of a few pounds against a saving that might be anything from nothing at three in the morning to an hour at half past four on a Friday.
If your time is chargeable, the calculation is straightforward. An hour of a tradesperson's or consultant's time is worth several multiples of the toll, so anything above a token saving pays for itself. If you are driving to something with a fixed start time — a client, a court, a flight — the value is not the average saving but the removal of the tail risk.
If you are driving your own time on a Sunday, it is usually not worth it.
When it pays for itself
Assuming a car toll of around £8 and chargeable time:
| Your time is worth | Break-even saving | Typical verdict |
|---|---|---|
| £0 (own time, weekend) | Never | Take the M6 |
| £25/hr | 19 min | Often worth it at peak |
| £50/hr | 10 min | Usually worth it |
| £100/hr | 5 min | Almost always worth it |
| Fixed appointment you cannot miss | — | Worth it for the certainty alone |
The bit people get wrong
Comparing the toll against the fuel saved. The fuel difference between the two routes is small and can go either way — the toll road is not appreciably shorter.
The toll is not buying you fuel. It is buying you time and certainty, and it should be judged against what those are worth on that particular trip.
Claiming it
A toll paid on a business journey is a claimable expense, separate from the mileage rate. The mileage rate covers running the vehicle; the toll is the cost of using that particular road.
Keep it attached to the journey. A toll on your commute to a permanent workplace is not claimable, and a statement showing six tolls does not tell you which were which.
The wider point about tolling
The M6 Toll is a useful demonstration of what tolled British motorways would feel like: reliably clear, and used by a minority. Whether that is a good outcome depends on what you think roads are for, which is roughly the debate that will follow fuel duty as the fleet electrifies.
Sources
- National Highways
- National Highways — Our roads
- HMRC — Expenses if you're self-employed: vehicles
- HMRC — Business travel mileage for employees' own vehicles
General information, not tax advice. Toll prices are set by the operator and change.