Scotland's GDP is at 99% and is third highest out of the 12 regions within the UK only behind London and South East England. In 2012 Scotland gained a place at the expense of East England. That puts 9 regions GDP below Scotland's, 7 of which happen to be in England.
Although London raises the most tax it does not account for the rest of England. Out of the 9 regions 3 are surplus while 6 are subsidized putting England as a country into debt.
Those figures are a bit out of date now, but still gives a true reflection of how the north and west of England are subsidized and still shows Scotland as the 4th richest region within the UK, the growth in Scotland has improved since then, although it has stalled now (ostensibly) under the conservative party and it's infamous cuts ala "Torrie cuts".
Additionally, Scotland and England have opposing social and political views. Scotland doesn't want a conservative government, I would urge you to look up how the Scotland votes as a nation and how England votes. A conservative government and their idea of privatising everything (fair enough that's an exaggeration) is a quick fix for money and is not a sustainable plan, ESPECIALLY up here in Scotland, where our own Scottish government have conflicting policies and ideologies. With regards to education/tuition and the NHS, as well as providing a welfare state.
I would love to have time to list all the reasons why I voted Yes, should you wish to hear please ask. I could bore you to death all day. And I will provide sources upon request, I haven't got time to write pages atm.
I completely respect any argument for independence other than economic arguments and I definitely agree with there being somewhat of a political rift between Scotland and England. However anyone saying with a straight face that the Scottish economy will definitely be better off after independence is still biased. The difference between the Scottish GDP and the national is still rather marginal, even when taking into account the revenues from North Sea oil and gas. It's hardly like Scotland is being held back by the UK on an economic level. Regardless from that though, going independent will have an effect on so many things, few people can oversee it all and no one can predict what it is going to happen, least of all your average politician or journalist. One thing that is fairly easy to predict is that uncertainty doesn't sit well with financial markets. Combine general uncertainty with the unpredictability of oil and gas prices on which Scotland would rely fairly heavily, and you have a recipe for an investment choke.
It is likely that there will be economic decline after independence, at least on the short term because of poor credit flow. After that it is anyone's guess. I doubt it would be disastrous decline so Scots should have asked themselves if they are willing to pay for independence. Arguments that the economy will go flying high though are simply completely unjustified. If you ask me, from a Scottish national perspective, this referendum should have either been done before the crisis or been held off a few years until people were less recently confronted with economic decline. In 2005 few people gave a shit about the economy as everything seemed trod along just fine, and non-economic pro's would probably easily have trumped economic uncertainty con's.
At least the upside for the English is that their current account won't get fucked further by the loss of oil and gas, and the upside for me as a non-UK citizen is that Labour won't lose a big part of their voterbase, so perhaps the UK won't go full Toritard forever now.