What we know so far about Tuesday's budget

• Economists predicting MYEFO forecast of $31.2b for 2015/16 deficit to blow out to upwards of $40b.
• Treasurer Joe Hockey promising "quality trajectory back to surplus". But no surplus likely in the forward estimates.
• Fall in iron ore prices to impact on tax receipts for 2015/16
• Record infrastructure spend, as states take advantage of asset recycling scheme bonus payments
• Crackdown on welfare cheats through better data matching to identify fraud. Centrelink computer upgrade worth $1b to help with this.
• Major $3.5b reform to child care, with single payment paid directly to childcare centres to reduce parents' upfront costs. Stay-at-home parents with a family income of more than $65,000 will no longer secure childcare subsidies.
• Income-tested hourly subsidy for nannies for 10,000 shift worker families in a two-year trial costing $246m.
• Loophole that allows new parents to claim paid parental leave payments from both the federal government and their employer set to be closed, saving nearly $1b a year.
• Plans for a $20b medical research fund to go ahead
• Pharmaceutical Benefits Scheme changes to save about $3b over four years, and comes via removing subsidies from a raft of over-the-counter medicines. Health savings likely to total $7b over forward estimates.
• Government to fund $1.3b worth of new generation cancer drugs over four years through listing on the PBS

For more details, go to: http://www.theaustralian.com.au/news/latest-news/what-we-already-know-about-the-budget/story-fn3dxiwe-1227350725517