High Toll is a Kuttenberg task. After Speak of the Devil (
Speak of the Devil), innkeeper Franz Geldstuck at the Iron Eagle needs help with Sigismund's soldiers running an illegal toll on a main trade road.
How to start High Toll
Visit the Iron Eagle Tavern in 
Kuttenberg and speak with Franz Geldstuck. Pass the opening Charisma and Scholarship checks to unlock the full briefing: troops are shaking down merchants with a roadblock and extortion.
Quest location on the map:
Finding the soldiers' camp
This task can grow glitchy if it sits open too long. After Geldstuck gives it to you, head to the roadblock quickly so guards, tents, and the Royal Customs Official stay spawned.
The camp sits on the northern road leaving Kuttenberg toward 
Grund. Follow the main northern path until a small cluster of trees and the blockade.
Sometimes bandits appear just ahead. They are usually not part of this quest and can be cleared separately.
Obtaining the document
Your goal is their official writ: proof they are taxing the wrong stretch of road. Three common approaches:
The diplomatic path (Speech)
With solid Speech and Scholarship, you can avoid bloodshed. Approach by day, talk to the sentry on the road or the commander, and pass medium checks to inspect their papers.
If you succeed, Henry sees the writ targets another route, so the current shakedown is illegal. Confront them with that and they can strike camp and leave without a fight.
Stealth option
Low speech but solid Stealth? Wait for night, slip into camp, and find the Royal Customs Official asleep in a tent. Pickpocket the writ from him and leave.
The combat path
You can attack the detachment outright. These are well-equipped Sigismund soldiers, so come prepared. After the fight, loot the commander or Royal Customs Officer for the writ. The rest of the camp is not worth much scavenging.
Conclusion and rewards
Return to Kuttenberg with the writ and give it to Franz Geldstuck. He thanks you for opening the road and pays 100 Groschen.
High Toll FAQ
When can I start High Toll?
After Speak of the Devil. Iron Eagle, Geldstuck, pass Charisma and Scholarship gates.
Where is the roadblock?
North out of Kuttenberg on the way to Grund, at trees and barriers.
How do I pacify them without fighting?
Daytime dialogue, read the writ, show it is for the wrong road, pressure them to leave.
How do I steal the writ?
Night, sneak to the sleeping Royal Customs Official, pickpocket the document.
Who drops the writ after combat?
The commander or Royal Customs Officer corpse.
What is the payout?
100 Groschen from Geldstuck when you hand over the papers.