How do you budget for an overland trip? That's a tricky question to answer and a question that majority of overland trips don't event attempt to answer. Nick from Langebaan Sunset attempted to provide a full years worth of budgeting from his recent UK to SA trip. It is worth visiting his website to get an insight into the costs.
Budgeting and planning is often the most important aspect of any trip, however, the multiple countries and currencies often play havoc on budget planning. Francois, a member of the Overland Forum, kindly created this spreadsheet which allows for multiple countries and currencies to be integrated into a budget. It's a fantastic tool which will be very useful for planning.
Here is the link to the Google Group page and the link to download a copy: Overland Forum - Overland Trip Planner.