Most small businesses won't be affected by changes to capital gains tax, government ministers insist, despite criticism from the sector on the budget measures.
As the coalition prepares to unveil its support measures for small businesses on Wednesday, ministers brushed off concerns entrepreneurs could take their investments overseas due to the changes.
The federal budget outlined changes to the capital gains tax, which would replace a 50 per cent discount for assets held for more than a year to a rate based on inflation.
Federal minister Sam Rae said most businesses won't be subject to the capital gains measures.
"Ninety per cent of small businesses will have their quite generous capital gains arrangements preserved, there's no change to that," he told Nine's Today program on Wednesday.