New Zealand punters are backing the All Blacks to win the World Cup final on Sunday but a large number have wagered on the Wallabies.

Just over 57 per cent of all 2541 bets over the past seven days have been placed on the All Blacks to win the World Cup. Interestingly, nearly 43 per cent are backing Australia.

The TAB have been charting who punters think will win the World Cup based on the number of bets for the overall winner.

Their World Cup markets opened in July 2014 and, when charted against Australia only, support for the All Blacks over the Wallabies peaked at 84 per cent from February to August. It dipped following the start of the tournament and now sits at 67 per cent of all cumulative bets compared to Australia.

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Support for the Wallabies has grown since the start of the tournament and now sits at 33 per cent.

Fans throughout the country will be nervous on Sunday morning but a couple of punters have even more reason to be anxious.

The single biggest bet with the TAB of $130,000 was taken before the World Cup started and the Auckland punter stands to pocked $201,500 if the Wallabies win.

Another bet of $100,000 was placed on the All Blacks last week and would return $160,000 if Steve Hansen's side win.

READ MORE: Backing black - punter's $100k bet

The All Blacks look to defend their World Cup title on Sunday morning (5am NZT) when they take on Australia at Twickenham.

Where the bets went this week (total number of bets):

NZ:

57 per cent (last week 52)

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Australia:

43 (last week 14)