When including any currency in any context, always remember that where rules exist over how money can be depicted in print or digital media, those rules are first and foremost intended to prevent counterfeiting. Specific rules relating to the most commonly used currencies are set out below. In all other cases, it is wise to avoid depicting entire notes, particularly in a flat-lay composition, unless the notes are clearly marked as specimens.
External Resource: https://rulesforuse.org/en
Do not show the entire note, and ideally, no more than 50% of it. The Bank Of England has helpfully produced a set of images on Flickr which illustrate acceptable compositions.
Do not distort or disfigure or replace the Queen or any other people whose images appear on the currency.
Do not show notes being burned.
Under Australia law, it is an offence to make a reproduction of a bank note which could mislead people into believing it is real. The best way to avoid this risk is to avoid showing whole notes.
It is an offence to make a reproduction that could mislead people into believing it is real, so again avoid entire notes unless they are clearly marked as specimens. In addition:
Notes must not be shown as having been defaced
Notes must not be shown in a context that creates an association with violence.
Follow general guidelines above on counterfeit prevention.
There are extensive rules in place which dictate how Canadian banknotes can and cannot be used, and a requirement for permission to be sought in many instances. Fortunately, there is an exception to the requirement for permission in the case of non-print media, provided that it is clear that the images are intended to show a general indication of currency and there is no danger that the images could contribute to counterfeiting.
The Etherium logo can now be used in royalty-free content.
The Bitcoin name and logo cannot be shown on clothing, footwear, headgear, fruit juice, beer, water, and alcoholic beverages, but is otherwise acceptable.