'Economically left-wing' and 'economically right-wing' should do. (Or even better avoiding summing up complicated differences in ideology with pithy slogans, and abandoning simplistic labels Wholesale)
Fiscal conservative is a meaningless term. Most leftists could probably describe themselves that way if they wanted to - seeing as many want punitive and high taxes on land to overcome budget shortfalls. I really wouldn't bat an eyelid if TNF called himself a fiscal conservative.
I would argue that 'fiscal conservatism' is a confusion of various meanings of the term 'conservative'. Properly, fiscal conservatism should be in the same category of usages as when someone says they 'budget conservatively' or 'conservative accounting' or 'a conservative forcast' in so far as one makes decisions about the future with a high-margin for error or uncertainty. This usage is then appropriated by political conservatives in order to make a claim about themselves that is not necessarily true.
Unfortunately, this process has rendered the term politically useless
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