78 per cent of IoD members said they backed the axing of the government's manifesto pledge of a fiscal surplus by 2020.
It's a huge reversal of a similar poll in May last year, which saw 80 per cent back the plan to eliminate the deficit by the end of this parliament.
The survey also shows growing support for a round of tax cuts for businesses, with roughly two-thirds backing former chancellor George Osborne's suggestion of a 15 per cent rate of corporation tax, first revealed after June's Brexit vote.
What's more, 50 per cent said they would support an increased investment allowance of £500,000 for machinery, which was cut by Osborne to £200,000 in January, and one in four said this should rise as far as £1m.
IoD director general Simon Walker called for a “bumper feel-good Autumn Statement”.
“Increasing tax breaks for investment and cutting corporation tax would be a very good start, as would delaying the poorly designed Apprenticeship Levy,” he said.