The majority of people from across the political spectrum believe Scotland should be responsible for raising most of the money it spends, according to research from an independent think-tank.

Reform Scotland has released data from its online opinion poll on a possible third option of "devolution plus" in a referendum on independence.

The poll follows the publication earlier this year of the organisation's proposals for a middle option in a referendum.

Reform Scotland said its "Devo Plus" model would remove the block grant funding which Scotland receives from Westminster, and make Holyrood solely responsible for raising the money it spends.

Its online survey asked 811 people sourced from its distribution lists and via Twitter a range of questions about independence and devolution.

Asked if they thought the Scottish Parliament should be responsible for raising the majority of the money it spends, more than 86% of those questioned said it should. A majority answered yes across all political affiliations.

Asked how they would vote in a straight yes or no question on independence, 66% said they would vote yes. However, of those surveyed, more than half said they identified most with the SNP.

Ben Thomson, chairman of Reform Scotland, said: "From a number of surveys and polls it is becoming increasingly obvious that the general public want a greater ability for Holyrood to raise revenues to better match its spending responsibility whilst at the same time many still value the relationship with the rest of the UK.

"Reform Scotland's proposal, Devo Plus, sets out in detail how revenues could be raised both by Westminster and Holyrood for both levels of government to fund their costs within the current constitutional framework of devolution. This would give real incentives for politicians at both levels of government to be more accountable for the money they spend.

"Whilst Reform Scotland accepts that this survey is not scientific, it does present some interesting findings which we hope will stimulate debate on the constitutional future of Scotland."

Labour leader Johann Lamont said: "This poll intensifies pressure on the SNP to do two things. First, they should confirm their support for the Scotland Bill which provides the greatest devolution of financial powers to Holyrood in three centuries.

"Second, they need to call a referendum on separation now to end the uncertainty, with one question on whether or not Scotland separates from the rest of the UK.

"Separation and devolution are two opposing futures for our country. The people of Scotland should be allowed to decide whether they want to stay in the United Kingdom or leave it.

"I do not fear the verdict of the Scottish people but am convinced that our country will again confirm that devolution is the national choice of Scotland."

The Reform Scotland survey results contrast with other opinion polls on devolution and independence.

An Ipsos MORI survey from September suggested 67% of people would vote yes to more laws, duties and all tax-raising powers while keeping Scotland in the UK, if a referendum were held immediately, while only about 35% would back outright independence. A TNS-BMRB poll, also published in September, put support for independence at 39%.

Liberal Democrat leader Willie Rennie said Reform Scotland's report on Devolution Plus was an excellent contribution to the debate.

He said: "All the polls show a large majority of people in Scotland want more power and control within Scotland but still part of the UK. That is what Liberal Democrat home rule will offer.

"Today's Reform Scotland poll has been rather swamped by SNP supporters — as online polls often are. But there is still a strong sense that home rule could become the most popular route to a successful Scotland in the future."