This is some very timely advice...
http://www.samuelbrittan.co.uk/text144_p.html
I especially paid attention to this part:
The most unorthodox expedient he examines is a tax on money , if not spent by certain dates. This was proposed by academics a century ago, but is not as cloud cuckoo as it seems. When the Swiss were trying to repel short money inflows ago they imposed a tax on overseas held bank deposits. This surely could have been extended to cover domestic deposits as well. Admittedly notes would have been a more difficult proposition, but not impossible with modern electronic means.
Hmmm... "tax on money if not spent by a certain date" sounds alot like inflation to me...