First Minister Alex Salmond has insisted that sharing sterling after independence is the best option for Scotland, but that there is a plan B, C, D, E and F.
The Scottish Government favours a formal monetary union, in which an independent Scotland would continue to share the pound, but this arrangement has been ruled out by Chancellor George Osborne and the main parties at Westminster.
Mr Salmond has faced growing calls to set out his "plan B" for currency since Mr Osborne's statement last month.
Speaking on The Andrew Marr show he would not be drawn on details of the plan but said that economic advisers had drawn up a range of viable options.
He told the BBC programme: "The fiscal commission working group set out not just a plan B as you put it but B, C, D, E and F, a range of viable currency options for an independent Scotland, but clearly we should argue for plan A that is to say the thing that's best, in the best interests of Scotland and indeed the rest of the United Kingdom.
"The range of options is there within the working group proposals which were published but the best option that they identified was to share sterling, to share the pound, which is as much our currency.
"It's certainly more our currency than it is George Osborne's. It's a shared currency.
"We're as entitled to share it as the people in London and therefore if you claim ownership over that currency like Ed Balls and George Osborne are doing then unfortunately you claim ownership over all the debts of the United Kingdom and no serious politician in London is actually going to argue that process.
"That's why people in Scotland are seeing through the bluff and the bluster."
He was also asked about claims by European Commission president Jose Manuel Barroso that Scotland may find it ''extremely difficult, if not impossible'' to join the EU.
He said: "Serious people, secretary generals, former judges in the court of justice like David Edward have pointed out why you cannot exclude from the European Union citizens of Scotland who have been part of it for over 40 years and why it would be totally ridiculous for the European Union not to accept the democratic wishes of the Scottish people."
He also said that an independent Scotland would remain part of the existing common travel area between the UK and the Republic of Ireland.
He said: "We've had a common travel area since the 1920s which has encompassed recently not just the Republic of Ireland but the Isle of Man, the Channel Islands which are not, incidentally, in the European Union.
"There are differences between Irish immigration policy and the immigration policy in the rest of the UK but that hasn't stopped the common travel area working."
In a statement released earlier today Mr Salmond said that ''momentum is firmly with the Yes campaign'' as the six-month countdown to the independence referendum approaches.
Mr Salmond said he believes Scots will choose ''hope over fear'' by backing an independent Scotland when the country goes to the polls on September 18.
He described the No campaign as the ''most negative campaign in modern political history'' and pointed to the latest polls showing support for the Yes camp.
A survey on Thursday found that support for Scottish independence had reached its highest level for more than six months.
Following the Andrew Marr interview, the SNP complained that the presenter appeared to give his personal opinion on an independent Scotland's membership of the EU. They said his words breached BBC editorial policy. SNP anger at BBC presenter's comments on iScotland EU membership
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article