Retired All Black Sonny Bill Williams is poised to become the first $30 million man in rugby league and rugby union.

The Daily Telegraph reported Williams' $10 million, two-year contract with the Toronto Wolfpack in the Super League has already made him the highest-earning star in the history of the two rugby codes.

It could push him towards total career earnings of $30 million.

According to the report, Williams has earned more than $26 million in his 16-year football career and seven-fight boxing career.

Combined with his long-term $2.5 million ambassadorial sponsorship deal with Adidas, Williams' earnings are set to reach $28 million by the time he sees out his deal with Toronto.

Sonny Bill Williams' fortune:

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Foods Pacific Ghee Promotion

NRL and rugby union earnings: $23.85m

Boxing earnings: $1.5 million

Adidas earnings: $2.5 million

Potential Gallen-Hall fight earnings: $2 million

Total carer earnings: $29.85 million

Daily Telegraph/Stuff.co.nz