RTW Budget and Itinerary help

Just wondering if everything is already 100% booked? Such as your volunteering in Nepal, workaway in the hostel in Netherlands or Macchu Pichu?

Nope, I'm going to book the first bit, India and Nepal, and then just go from there with a rough idea of when and where I want to be for festivals. Workaway I'll hopefully organise when in Europe, and Machu Picchu I'll need to book around July/August to get it in October I think. I want to leave it open as possible, but I can't go without a plan :p

Do you have a valid work visa/passport which enables you to work in Europe? Otherwise you might want to rethink your workaway part in the Netherlands and Spain.

I'm hopefully going to get a working holiday visa for the Netherlands - if anyone has any advice on how easy/quickly you can get one when you're there from personal experience? From the Aus/netherlands embassy website they make it sound quite simple. This is purely to extend the Schengen 90 day rule though, so I have a bit longer in the EU. I don't really want to be stuck looking for work while I could be travelling, and hopefully will have saved up enough/travel cheaply enough to do so without having to find work. Workaway is actually unpaid volunteering, where you work for board and sometimes food, so I wouldn't technically need a visa for Spain or the Netherlands because it's volunteering, I'm not employed in that sense. (pretty sure)

You need a visa for it for both Spain and the Netherlands as it's not strictly unpaid. As you said, you receive free board so you're, depending on the rules in those countries, potentially getting a taxable benefit. So yes, you do need a valid work visa for both.

As I said, I am getting a working holiday visa for the Netherlands, so it's just Spain I have to think about.
According to the Spanish Volunteering Act volunteering is defined as:

The activity must be of an altruistic and solidarity character; It must be freely chosen and not subject to any personal duty or legal boundary;
It must be carried out without economic gain and without prejudice to the right of the volunteer to be reimbursed for any expenses s/he may incur while fulfilling their tasks;
It must be developed through public or private non-profit organisations in the framework of a concrete programme or project.

I'm not getting economic gain, and I'm not being reimbursed monetarily for having a place to stay, so would this count as volunteering? Has anyone done workaway or wwoofing in Spain and needed a working visa? Thanks for bringing this to my attention meats, but I'm still a bit unsure whether under this definition it's volunteering?

No it does not count as volunteering as you are receiving a form of payment in exchange for your labour. Instead of getting money like the majority of people in exchange for their labour, you are receiving free accommodation. As such, you are gaining economically and the Spanish tax authorities will also see it that way should it be brought to their attention.

As someone who works in tax I am 100% confident that you are gaining economically as a result of your volunteering. If you weren't receiving accommodation or money then it might be a different matter.

You can find more information on page 10 in the link below about accommodation being a taxable benefit in Spain:

http://www.pwc.com/us/en/hr-international-assignment-services/assets/spain-folio.pdf

The below might also prove useful:

http://www.lonelyplanet.com/thorntree/thread.jspa?threadID=2173289

What you also have to take into account, which the vast majority of people who want to wwoof without a valid work visa don't, is that if you are caught then the host is potentially going to get into trouble with the country's police for employing people who do not have the right to work in that country.

If caught it's unlikely to go down well in Spain when unemployment is rather high to say the least, especially amongst the youth!