But the Turnbull government has now extended that tax incentive by increasing the threshold from $2m to $10m.
Osborne described the new approach, which includes increasing the threshold for business rates, as "a £7bn tax cut for our nation of shopkeepers.
A Conservative government would take family homes out of inheritance tax by introducing a new allowance effectively increasing the threshold to £1m, David Cameron has announced.
The Conservative party would be better off scrapping inheritance tax altogether rather than increasing the threshold to £1m, the Institute for Fiscal Studies has suggested.
Engine manufacturers, working with airlines and aircraft manufacturers, must ensure we have the best information on the effect of ash on engines, potentially increasing the threshold of ash concentration that engines can tolerate.
The social security net is ignored, except in the intention to "take people out of tax"; increasing the threshold to £12,500 won't make a lot of practical difference, since it will simply reduce entitlement to in-work benefits.
The panel also rejected the idea of increasing the threshold for a successful bid from the current level of 50% plus one share to two thirds, as argued by some Labour politicians.
However, he is also expected to use the budget to press ahead with implementing the Conservatives' pre-election tax pledges, including increasing the threshold for the higher rate of tax, and raising the tax-free personal allowance.
"And when it comes to higher rate tax payers, our priority is increasing the threshold at which you pay that higher rate - the 40p rate - to £50,000".
Councils have responded by increasing the threshold for eligibility.
Increasing the threshold implies removing edges from the network.
