An independent Scotland would keep the pound and move to its own currency when the “time is right”.
Nicola Sturgeon outlined the view at a briefing giving updated arguments for what could happen if the country voted for independence.
The first minister said a timetable for creating a Scottish currency would not be set, however, use of sterling would be as “short as practicable”.
The UK government has said now is not the time to discuss independence.
A Scottish government paper has set out proposals for key issues, such as re-joining the EU, currency, trade and border crossings.
The prospectus, which was unveiled at a media briefing in Edinburgh, includes detailed on how an independent Scotland would apply to become a member of the European Union.
It also outlined a redesign of the energy market and a migration policy to boost the working population.
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At the Bute House briefing, Ms Sturgeon said a Scottish pound would be created after independence only “when the time is right”.
This is in keeping with proposals made in 2018 by the SNP’s Sustainable Growth Commission, which said six key tests would have to be made before the country transitions away from pound sterling. That move was forecast to take about a decade.
The “Building a new Scotland” paper cuts the number of tests to three with no prediction on the length of time it would take to fulfill them. The first minister said the timescale would be as “short as practicable”, but said it would not be “responsible” to give a firm commitment.
Under the prospectus, an independent Scottish central bank would be created, along with a debt management office and a significantly strengthened Scottish Fiscal Commission to replicate the work of the UK Office for Budget Responsibility.
An independent Scotland would look to join the EU with free movement with the European Union countries, remaining within the Common Travel Area with the UK and Ireland, while also joining the EU’s Schengen free movement area.
“That means any talk of passports to visit relatives in England is utter nonsense,” Ms Sturgeon said. “Free movement of people across our islands will continue as before.
“An independent Scotland will also be gaining free movement across 27 other countries.”
The prospectus says there would be physical border checks on goods on the two main trunk routes between England and Scotland, while similar measures at rail freight terminals would be likely.
Ms Sturgeon said: “None of this, none of this is insurmountable, but it does require proper planning.”
She went on to address the issue of an independent Scotland taking on UK debt.
The first minister explained that while there was no “legal” requirement to do so, Holyrood has a “moral” responsibility.
She told the press conference: “In light of that, and indeed our desire for a strong future partnership between Scottish and UK governments, we would seek a fair settlement on both debt and assets.”
The SNP leader also said that an independent Scotland could realise its “vast renewable energy potential” and “kick start the inclusive growth” via the proposed Building a New Scotland Fund, a pot of up to £20bn generated through oil industry revenues.
Without independence, Scotland will face austerity, trade barriers and “narrowed horizons as a result of Brexit,” Ms Sturgeon said. “All of it exacerbated by increasingly dysfunctional Westminster decision-making.”
Before the paper’s publication, the Scottish Conservatives’ finance and economy spokeswoman Liz Smith said the SNP had “never been able to make a convincing economic case for independence”.
She added: “Nationalists are consistently unable to address the big questions that the public want answered about independence – on currency, on pensions and about how a hard border would impact our trade with the rest of the UK.
“Nicola Sturgeon has already admitted that the answers to some of key these questions would not be provided before the public was asked to vote.
“That is a ridiculous situation which would have serious implications for jobs, wages, savings and investment.”
Ms Smith added the focus of the administration should be on the global cost of living crisis as opposed to “another divisive referendum”.
Meanwhile, Scottish Labour called on the SNP to be honest about its proposals.
The party’s finance spokesman Daniel Johnson said: “The SNP need to drop the spin and come clean with people about the catastrophic reality of their economic plans.
“Despite wasting 15 years in government peddling the same old agenda, they still can’t answer even the most basic questions.”
And Scottish Liberal Democrats economy spokesman Willie Rennie criticised the publication of the Scottish government’s third prospectus on independence this year.
A UK government spokesperson said: “People in Scotland want their governments to be focused on the issues that matter to them – growing our economy, ensuring our energy security, tackling the cost of living and supporting our friends in Ukraine against Russian aggression.
“This is simply not the time to be talking about another independence referendum.”
The spokesperson added Scotland benefited from being part of a wider union, through initiatives like the Covid furlough scheme or the energy support package which has limited bill increases this winter.
The paper is the third in a series, published as part of the Scottish government’s plans to hold a referendum on 19 October next year.
In June Ms Sturgeon unveiled what she called a “refreshed” case for independence and said her government had an “indisputable mandate” for a second referendum.
The following month she launched a second paper which argued independence was the only way to end the “starker than ever” democratic deficit in Scotland.
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The UK Supreme Court, which heard two days of submissions last week, is considering if Holyrood has the legal powers to press ahead with a referendum without consent from the UK government.
Scotland’s lord advocate argued that such a vote would be advisory, and therefore would not have a legal effect on the Union.
The UK government argues the case is plainly about the constitution which is reserved to Westminster and holding a referendum is therefore beyond the powers of the Scottish Parliament.
Responding to the First Minister’s latest paper on breaking up the UK, Scottish Liberal Democrat leader Alex Cole-Hamilton said: “Nicola Sturgeon’s economic plan is a dangerous recipe for years of chaos.
“When it comes to breaking up the UK no price is too high and no amount of disruption too painful for the SNP. The islanders waiting for ferries, 1 in 7 Scots on NHS waiting lists and parents who believed education was the number one priority have already paid the price for the SNP’s fixation. Nicola Sturgeon wants mortgage holders, pensioners and taxpayers to be next.
“On borders and barriers, she makes the same pie in the sky promises as the Brexiteers, threatening to cut Scotland off from its biggest trading partner. She refused to admit her proposals would leave Scotland outside both the UK and the EU for an untold number of years. Nor can she tell the public how Scotland would build up the necessary foreign currency reserves for her plans to ditch the pound.
“The solution to Tory chaos isn’t to double it with independence, it’s to get Truss and the Tories out of government and bring new hope to the whole United Kingdom.”
Scottish Conservative Shadow Cabinet Secretary for Finance and Economy, Liz Smith MSP, said:“It’s hard to see what the point of this paper launch was, given that it fails to address the fundamental questions that have always undermined the economic case for independence.
“The SNP are still unable to provide details about how our currency would work, who would pay our pensions, and how we would cope with the potentially devastating effects of a hard border with the rest of the UK.
“Absurdly, they expect the Scottish public to vote on independence without any of these crucial questions being answered.
“The fact is that the SNP’s economic case for independence is as weak as ever – this is a lightweight SNP pamphlet dressed up as a glossy Scottish Government paper. These proposals would be a leap in the dark that would directly endanger jobs, wages, savings and investment.
“Scotland deserves a government focused on people’s real priorities, not sketchy, uncosted schemes.”
Douglas Ross, Scottish Conservative Leader, said: “This illustrates just how thin the economic case for independence is. The SNP are trying to sell Scotland a pig in a poke. It’s completely the wrong priority at the worst possible time for Scotland. Nicola Sturgeon should be using government resources to help struggling families instead of to push for another divisive and unwanted referendum.”