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30 May 2014, 05:38
A cap on spending for groups on both sides of the independence debate comes into force today.
It means Yes Scotland and Better Together cannot go beyond £1.5 million each in the 16-week run up to polling day on September 18.
People and groups not registered as permitted participants are restricted to £10,000.
But registered groups can spend up to £150,000.
Campaigners will also have to report any donations they receive over £7,500.
John McCormick, Electoral Commissioner for Scotland, said campaigners will be closely monitored.
"Campaigners have a vital role to play at any referendum as they set out competing views for voters to choose between,'' he said.
"At the same time, voters will want to be confident that campaigners are playing by the rules and that there is transparency about how the campaigns are funded.
"We've been working with campaigners to make sure they understand their responsibilities and can comply with the rules and we will be monitoring their activities closely.''