Possible Clues:

• Or in tax, just to get rid of the spirits
• Sounds like what an all-rounder must take and keep off spirits
• Give a ghost something soundly physical and do away with it
• Keeping gold is tax free
• Soldiers bound by duty drive away
• If you can do this, no spirits with it (8)
• By the sound of it, running out of spirits to do this
• Remove spirits from tax, protecting servicemen
• About the whale, it's one's duty to take the spirits away
• This might make one fit to get rid of spirits, by sound of it