There isn't likely to be much in the Budget to drive any big moves in shares, the currency or interest rate markets.
Those days seem to be gone, under Bill English, who favours "no surprises" affairs. It may be different in an election year, when the people need reminding why to vote the current lot back in, but that's next year, not this week.
Tax cuts seem off the table for now, and I think they should stay that way. I'm certainly no supporter of increasing taxes, especially for wage and salary earners who already pay more than their fair share, but I don't think the time is right for cutting.
If there is a need for some tweaking, move the brackets a little to give low-to-middle earners something.