Aurora is on version 2.5.0 C#, available at the Aurora Forums.
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C-Wealth
Shipping Line Earnings and Tax
For C# Aurora, the distance a civilian ship has travelled (in terms of systems) will affect how much the shipping line receives in payment and how much tax is generated.
All VB6 payment rates will be halved as a baseline but multiplied by the number of systems travelled. So a civilian ship travelling to a destination two transits away will receive the same payment as in VB6 Aurora. A ship travelling to a destination five transits away will receive 250% of the current payment. This applies to trading and to player contracts.
A civilian ship travelling within the same system will be paid half of the one-system rate (which is half what is currently paid in VB6).
This should reduce some of the early game bloating of civilian traffic but make it workable for the later game with longer distances (especially with the new jump point generation in v7.1 of VB6 Aurora). Date 02.10.2016
Civilian Movement of Installations
In C# Aurora, the cost is: 5 x Number of Installations x Systems Travelled x (Installation Type Cargo Points / 25000)
So for a standard freighter (single cargo hold) transporting a construction factory to a destination four systems away, the cost would be 20 wealth. The calculation is 5 x 1 x 4 x (25,000 / 25,000).
Destinations in the same system as the start point count as half a system.